Prof. Jan P. Allebach Profile

Prof. Jan P. Allebach

Hewlett-Packard Distinguished Professor of ECE at Purdue Univ

SPIE Involvement:

Author | Editor | Instructor

Publications (146)

Proceedings Article | 2 April 2024 Poster + Paper

Ensemble processing and convexity measure for abnormally shaped nuclei segmentation

Yue Han, Yang Lei, Viktor Shkolnikov, Daisy Xin, Alicia Auduong, Steven Barcelo, Jan Allebach, Edward Delp

Proceedings Volume 12926, 129261Y (2024) https://doi.org/10.1117/12.3005617

KEYWORDS: Image segmentation, Education and training, Image fusion, Deep learning, Shape analysis, Diseases and disorders, Biological research

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Proceedings Article | 17 March 2015 Paper

A patch-based cross masking model for natural images with detail loss and additive defects

Yucheng Liu, Jan Allebach

Proceedings Volume 9394, 93941D (2015) https://doi.org/10.1117/12.2083476

KEYWORDS: Distortion, Visualization, Visual process modeling, Data modeling, Wavelets, Cognitive modeling, Performance modeling, Quantization, Image processing, Target detection

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Proceedings Article | 17 March 2015 Paper

Learning visual balance from large-scale datasets of aesthetically highly rated images

Ali Jahanian, S.V.N. Vishwanathan, Jan Allebach

Proceedings Volume 9394, 93940Y (2015) https://doi.org/10.1117/12.2084548

KEYWORDS: Visualization, Photography, Visual process modeling, Expectation maximization algorithms, Mining, Alternate lighting of surfaces, Parallel computing, Electronic imaging, Binary data, MATLAB

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Proceedings Article | 6 March 2015 Paper

Autonomous color theme extraction from images using saliency

Ali Jahanian, S. V. N. Vishwanathan, Jan Allebach

Proceedings Volume 9408, 940807 (2015) https://doi.org/10.1117/12.2084051

KEYWORDS: Visualization, Image retrieval, Image enhancement, Fourier transforms, Alternate lighting of surfaces, 3D image processing, Quantization, Superposition, Distance measurement, Image filtering

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Proceedings Article | 6 March 2015 Paper

Resolution-adaptive face alignment with head pose correction

Lu Zhang, Jan Allebach, Qian Lin, Xianwang Wang

Proceedings Volume 9408, 940803 (2015) https://doi.org/10.1117/12.2084985

KEYWORDS: Image resolution, Facial recognition systems, 3D modeling, Head, Super resolution, Cameras, 3D image processing, Surveillance, Eye models, 3D acquisition

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Proceedings Article | 6 March 2015 Paper

Piecewise linear dimension reduction for nonnegative data

Bin Shen, Qifan Wang, Jan Allebach

Proceedings Volume 9408, 940804 (2015) https://doi.org/10.1117/12.2085391

KEYWORDS: Dimension reduction, Data modeling, Statistical modeling, Glasses, Principal component analysis, Machine vision, Computer vision technology, Pattern recognition, Performance modeling, Optimization (mathematics)

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Proceedings Article | 8 February 2015 Paper

Shading correction of camera captured document image with depth map information

Chyuan-Tyng Wu, Jan Allebach

Proceedings Volume 9395, 939505 (2015) https://doi.org/10.1117/12.2083490

KEYWORDS: Cameras, RGB color model, 3D modeling, 3D scanning, Calibration, Light sources and illumination, Image processing, 3D image processing, Algorithm development, Bismuth

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Proceedings Article | 8 February 2015 Paper

Text Line Detection Based on Cost Optimized Local Text Line Direction Estimation

Yandong Guo, Yufang Sun, Peter Bauer, Jan Allebach, Charles Bouman

Proceedings Volume 9395, 939507 (2015) https://doi.org/10.1117/12.2083709

KEYWORDS: Image segmentation, Image processing, Feature extraction, Scanners, Cell phones, Cameras, Binary data, Computer engineering, Optimization (mathematics), Sun

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Proceedings Article | 8 February 2015 Paper

Controlling misses and false alarms in a machine learning framework for predicting uniformity of printed pages

Minh Nguyen, Jan Allebach

Proceedings Volume 9396, 93960I (2015) https://doi.org/10.1117/12.2083162

KEYWORDS: Machine learning, Printing, Receivers, Phase modulation, Algorithm development, Visualization, Image quality, Solids, Visual analytics, Nonimpact printing

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In our previous work¹ , we presented a block-based technique to analyze printed page uniformity both visually and metrically. The features learned from the models were then employed in a Support Vector Machine (SVM) framework to classify the pages into one of the two categories of acceptable and unacceptable quality. In this paper, we introduce a set of tools for machine learning in the assessment of printed page uniformity. This work is primarily targeted to the printing industry, specifically the ubiquitous laser, electrophotographic printer. We use features that are well-correlated with the rankings of expert observers to develop a novel machine learning framework that allows one to achieve the minimum "false alarm" rate, subject to a chosen "miss" rate. Surprisingly, most of the research that has been conducted on machine learning does not consider this framework. During the process of developing a new product, test engineers will print hundreds of test pages, which can be scanned and then analyzed by an autonomous algorithm. Among these pages, most may be of acceptable quality. The objective is to find the ones that are not. These will provide critically important information to systems designers, regarding issues that need to be addressed in improving the printer design. A "miss" is defined to be a page that is not of acceptable quality to an expert observer that the prediction algorithm declares to be a "pass". Misses are a serious problem, since they represent problems that will not be seen by the systems designers. On the other hand, "false alarms" correspond to pages that an expert observer would declare to be of acceptable quality, but which are flagged by the prediction algorithm as "fails". In a typical printer testing and development scenario, such pages would be examined by an expert, and found to be of acceptable quality after all. "False alarm" pages result in extra pages to be examined by expert observers, which increases labor cost. But "false alarms" are not nearly as catastrophic as "misses", which represent potentially serious problems that are never seen by the systems developers. This scenario motivates us to develop a machine learning framework that will achieve the minimum "false alarm" rate subject to a specified "miss" rate. In order to construct such a set of receiver operating characteristic² (ROC) curves, we examine various tools for the prediction, ranging from an exhaustive search over the space of the nonlinear discriminants to a Cost-Sentitive SVM³ framework. We then compare the curves gained from those methods. Our work shows promise for applying a standard framework to obtain a full ROC curve when it comes to tackling other machine learning problems in industry.

Proceedings Article | 8 February 2015 Paper

Online image classification under monotonic decision boundary constraint

Cheng Lu, Jan Allebach, Jerry Wagner, Brandi Pitta, David Larson, Yandong Guo

Proceedings Volume 9395, 93950C (2015) https://doi.org/10.1117/12.2083420

KEYWORDS: Image processing, Image quality, Image classification, Printing, Image enhancement, Lutetium, Raster graphics, Feature extraction, Scanners, Fourier transforms

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Proceedings Article | 8 February 2015 Paper

Estimation of repetitive interval of periodic bands in laser electrophotographic printer output

Jia Zhang, Jan Allebach

Proceedings Volume 9396, 93960J (2015) https://doi.org/10.1117/12.2083547

KEYWORDS: Printing, Nonimpact printing, Halftones, Bismuth, Electrophotography, Laser applications, Image processing, Image quality, Diagnostics, Chemical elements

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Proceedings Article | 8 February 2015 Paper

Design of irregular screen sets that generate maximally smooth halftone patterns

Altyngul Jumabayeva, Yi-Ting Chen, Tal Frank, Robert Ulichney, Jan Allebach

Proceedings Volume 9395, 93950K (2015) https://doi.org/10.1117/12.2083553

KEYWORDS: Halftones, Analog electronics, Printing, Digital imaging, Image processing, Digital image processing, Visualization, Image quality, Matrices, Fourier transforms

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Proceedings Article | 8 February 2015 Paper

Autonomous detection of ISO fade point with color laser printers

Ni Yan, Eric Maggard, Roberta Fothergill, Renee Jessome, Jan Allebach

Proceedings Volume 9396, 93960F (2015) https://doi.org/10.1117/12.2078324

KEYWORDS: Printing, Diagnostics, Image segmentation, Machine learning, Image quality, Algorithm development, Acquisition tracking and pointing, Binary data, Standards development, Image quality standards

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Proceedings Article | 8 February 2015 Paper

Autonomous detection of text fade point with color laser printers

Yanling Ju, Eric Maggard, Renee Jessome, Jan Allebach

Proceedings Volume 9396, 93960G (2015) https://doi.org/10.1117/12.2081238

KEYWORDS: Diagnostics, Printing, Binary data, Nonimpact printing, Visualization, Image analysis, Image quality, Solids, Detection and tracking algorithms, Sensors

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Proceedings Article | 8 February 2015 Paper

MFP scanner motion characterization using self-printed target

Minwoong Kim, Peter Bauer, Jerry Wagner, Jan Allebach

Proceedings Volume 9396, 93960E (2015) https://doi.org/10.1117/12.2083522

KEYWORDS: Error analysis, Spatial light modulators, Scanners, Printing, Diagnostics, Motion measurement, Statistical analysis, Fermium, Motion estimation, Signal detection

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Proceedings Article | 10 March 2014 Paper

Characterization of relief printing

Xing Liu, Lin Chen, Maria-Valezzka Ortiz-Segovia, James Ferwerda, Jan Allebach

Proceedings Volume 9018, 90180P (2014) https://doi.org/10.1117/12.2040977

KEYWORDS: Printing, Modulation transfer functions, Reflection, Surface finishing, Surface roughness, Visualization, Volume rendering, Image quality, Modulation, Light sources and illumination

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Proceedings Article | 6 March 2014 Paper

Low-cost structured-light based 3D capture system design

Jing Dong, Kurt Bengtson, Barrett Robinson, Jan Allebach

Proceedings Volume 9013, 90130B (2014) https://doi.org/10.1117/12.2042599

KEYWORDS: Projection systems, Cameras, Calibration, 3D modeling, Imaging systems, 3D image processing, Distortion, 3D acquisition, 3D metrology, Structured light

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Proceedings Article | 3 March 2014 Paper

Aesthetic quality inference for online fashion shopping

Ming Chen, Jan Allebach

Proceedings Volume 9027, 902703 (2014) https://doi.org/10.1117/12.2045269

KEYWORDS: Image segmentation, Photography, Image quality, Visualization, Cameras, Databases, Cell phones, Feature extraction, Silicon, Human subjects

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Proceedings Article | 3 February 2014 Paper

Effect of image capture device on the accuracy of black-box printer models

Jason Youn, Jian Sun, Yanling Ju, Tamar Kashti, Tal Frank, Dror Kella, Mani Fischer, Robert Ulichney, Guy Adams, Jan Allebach

Proceedings Volume 9015, 90150T (2014) https://doi.org/10.1117/12.2042611

KEYWORDS: Instrument modeling, Halftones, Printing, Modulation transfer functions, Data modeling, Image resolution, Scanners, Calibration, Digital imaging, Image quality

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Proceedings Article | 3 February 2014 Paper

MFP scanner diagnostics using a self-printed target to measure the modulation transfer function

Weibao Wang, Peter Bauer, Jerry Wagner, Jan Allebach

Proceedings Volume 9016, 90160A (2014) https://doi.org/10.1117/12.2037959

KEYWORDS: Modulation transfer functions, Scanners, Printing, Nonimpact printing, Detection and tracking algorithms, Halftones, Contrast transfer function, Imaging systems, Image quality standards, Diagnostics

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Proceedings Article | 3 February 2014 Paper

Irregular clustered-dot periodic halftone screen design

Chuohao Tang, Alex Veis, Robert Ulichney, Jan Allebach

Proceedings Volume 9015, 90150S (2014) https://doi.org/10.1117/12.2042428

KEYWORDS: Halftones, Printing, Binary data, Visible radiation, Image segmentation, Computer engineering, Image processing, Visual system, Iterative methods, Superposition

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Proceedings Article | 3 February 2014 Paper

SVM-based automatic scanned image classification with quick decision capability

Cheng Lu, Jerry Wagner, Brandi Pitta, David Larson, Jan Allebach

Proceedings Volume 9015, 90150G (2014) https://doi.org/10.1117/12.2047335

KEYWORDS: Image processing, Detection and tracking algorithms, Image classification, Digital imaging, Lutetium, Printing, Algorithm development, Bismuth, Computer engineering, Digital color imaging

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Proceedings Article | 3 February 2014 Paper

A computational texture masking model for natural images based on adjacent visual channel inhibition

Yucheng Liu, Jan Allebach

Proceedings Volume 9016, 90160D (2014) https://doi.org/10.1117/12.2038599

KEYWORDS: Visualization, Visual process modeling, Image processing, Data modeling, Image quality, Detection and tracking algorithms, Performance modeling, RGB color model, Target detection, Image filtering

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Proceedings Article | 3 February 2014 Paper

Perceptual metrics and visualization tools for evaluation of page uniformity

Minh Nguyen, Renee Jessome, Steve Astling, Eric Maggard, Terry Nelson, Mark Shaw, Jan Allebach

Proceedings Volume 9016, 901608 (2014) https://doi.org/10.1117/12.2038752

KEYWORDS: Visualization, Printing, Machine learning, Manufacturing, Nonimpact printing, Solids, Image quality, Optical inspection, Visual analytics, Image resolution

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Proceedings Article | 3 February 2014 Paper

JPEG ringing artifact visibility evaluation

Sirui Hu, Zygmunt Pizlo, Jan Allebach

Proceedings Volume 9016, 90160E (2014) https://doi.org/10.1117/12.2048594

KEYWORDS: Visibility, Image compression, Image quality, Edge detection, Image processing, Optical filters, Molybdenum, Image filtering, Psychophysics, Tablets

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Proceedings Article | 28 March 2013 Paper

Automatic design of colors for magazine covers

Ali Jahanian, Jerry Liu, Qian Lin, Daniel Tretter, Eamonn O'Brien-Strain, Seungyon Lee, Nic Lyons, Jan Allebach

Proceedings Volume 8664, 86640B (2013) https://doi.org/10.1117/12.2008914

KEYWORDS: Chemical elements, Visualization, RGB color model, Image retrieval, Image enhancement, Alternate lighting of surfaces, Structural design, Bridges, Imaging systems, Computer engineering

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Proceedings Article | 22 March 2013 Paper

Stegatone performance characterization

Yung-Yao Chen, Robert Ulichney, Matthew Gaubatz, Stephen Pollard, Chun-Jung Tai, Jan Allebach

Proceedings Volume 8665, 86650Q (2013) https://doi.org/10.1117/12.2005539

KEYWORDS: Printing, Scanners, Halftones, Computer programming, Calibration, Image segmentation, Digital watermarking, Visualization, Performance modeling

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Proceedings Article | 21 March 2013 Paper

Automatic photobook: focusing on image selection and image layout based on content and composition

Shao-Fu Xue, Henry Tang, Daniel Tretter, Qian Lin, Jan Allebach

Proceedings Volume 8664, 86640D (2013) https://doi.org/10.1117/12.2008922

KEYWORDS: Visualization, Image quality, Photography, Image enhancement, Image processing, Web 2.0 technologies, Printing, Fluctuations and noise, Electronic imaging, Current controlled current source

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Proceedings Article | 21 March 2013 Paper

Non-Manhattan layout extraction algorithm

Aziza Satkhozhina, Ildus Ahmadullin, Jan Allebach, Qian Lin, Jerry Liu, Daniel Tretter, Eamonn O'Brien-Strain, Andrew Hunter

Proceedings Volume 8664, 86640A (2013) https://doi.org/10.1117/12.2009424

KEYWORDS: Image segmentation, Image processing algorithms and systems, Detection and tracking algorithms, Visualization, Algorithm development, Analytical research, Image processing, Raster graphics, Databases, Optical character recognition

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Proceedings Article | 4 February 2013 Paper

Figure of merit for macrouniformity based on image quality ruler evaluation and machine learning framework

Weibao Wang, Gary Overall, Travis Riggs, Rebecca Silveston-Keith, Julie Whitney, George Chiu, Jan Allebach

Proceedings Volume 8653, 86530P (2013) https://doi.org/10.1117/12.2008428

KEYWORDS: Image quality, Machine learning, Printing, Image quality standards, Feature extraction, Visualization, Image processing, Image compression, Manufacturing, Human subjects

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Proceedings Article | 4 February 2013 Paper

Binary image compression using conditional entropy-based dictionary design and indexing

Yandong Guo, Dejan Depalov, Peter Bauer, Brent Bradburn, Jan Allebach, Charles Bouman

Proceedings Volume 8652, 865208 (2013) https://doi.org/10.1117/12.2006141

KEYWORDS: Associative arrays, Computer programming, Image compression, Distance measurement, Binary data, Raster graphics, Standards development, Statistical analysis, Image quality standards, Image segmentation

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Proceedings Article | 4 February 2013 Paper

Assessment of presence of isolated periodic and aperiodic bands in laser electrophotographic printer output

Jia Zhang, Stephen Astling, Renee Jessome, Eric Maggard , Terry Nelson, Mark Shaw, Jan Allebach

Proceedings Volume 8653, 86530N (2013) https://doi.org/10.1117/12.2008818

KEYWORDS: Printing, Nonimpact printing, Image processing, Halftones, Image analysis, Complex systems, Laser processing, Image quality, Product engineering, Digital filtering

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Proceedings Article | 4 February 2013 Paper

Estimating toner usage with laser electrophotographic printers

Lu Wang, Dennis Abramsohn, Thom Ives, Mark Shaw, Jan Allebach

Proceedings Volume 8652, 86520P (2013) https://doi.org/10.1117/12.2008504

KEYWORDS: Printing, Nonimpact printing, Binary data, Digital imaging, Image processing, Image compression, Scanners, Lutetium, Halftones, Calibration

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Proceedings Article | 4 February 2013 Paper

Wavelet-based figure of merit for macro-uniformity

Xing Liu, Gary Overall, Travis Riggs, Rebecca Silveston-Keith, Julie Whitney, George Chiu, Jan Allebach

Proceedings Volume 8653, 86530Q (2013) https://doi.org/10.1117/12.2008515

KEYWORDS: Wavelets, Wavelet transforms, Image quality, Error analysis, Printing, Human subjects, Image filtering, Image processing, Image analysis, Human vision and color perception

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Proceedings Article | 4 February 2013 Paper

A general approach for assessment of print quality

Xiaochen Jing, Steve Astling, Renee Jessome, Eric Maggard, Terry Nelson, Mark Shaw, Jan Allebach

Proceedings Volume 8653, 86530L (2013) https://doi.org/10.1117/12.2008819

KEYWORDS: Image analysis, Image processing, Solids, Printing, Visualization, Error analysis, Defect detection, Nonimpact printing, Algorithm development, Image quality

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Proceedings Article | 4 February 2013 Paper

Reducing flicker due to ambient illumination in camera captured images

Minwoong Kim, Kurt Bengtson, Lisa Li, Jan Allebach

Proceedings Volume 8652, 865207 (2013) https://doi.org/10.1117/12.2008271

KEYWORDS: Cameras, Signal detection, Camera shutters, Interference (communication), Distortion, Optical sensors, Signal processing, Image sensors, Visualization, Light sources

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Proceedings Article | 4 February 2013 Paper

Glare and shadow reduction for desktop digital camera capture systems

Thanh Ha, Chyuan-Tyng Wu, Peter Majewicz, Kurt Bengtson, Jan Allebach

Proceedings Volume 8652, 865206 (2013) https://doi.org/10.1117/12.2006340

KEYWORDS: Image fusion, Imaging systems, Image processing, Cameras, Light emitting diodes, Edge detection, 3D image processing, Detection and tracking algorithms, Digital cameras, RGB color model

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Proceedings Article | 4 February 2013 Paper

Segmentation for better rendering of mixed-content pages

Yi-Ting Chen, Di-Yuan Tzeng, Terry Nelson, Mark Shaw, Jan Allebach

Proceedings Volume 8652, 865209 (2013) https://doi.org/10.1117/12.2006150

KEYWORDS: Raster graphics, Image segmentation, Image processing algorithms and systems, Halftones, RGB color model, Printing, Binary data, Nonimpact printing, Simulation of CCA and DLA aggregates, Image processing

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Proceedings Article | 21 February 2012 Paper

Investigation of the role of aesthetics in differentiating between photographs taken by amateur and professional photographers

Shao-Fu Xue, Qian Lin, Daniel Tretter, Seungyon Lee, Zygmunt Pizlo, Jan Allebach

Proceedings Volume 8302, 83020D (2012) https://doi.org/10.1117/12.914686

KEYWORDS: Photography, Machine vision, Computer vision technology, Image classification, Image quality, Digital photography, Image processing, Visualization, Image filtering, Multimedia

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Proceedings Article | 21 February 2012 Paper

Global image analysis to determine suitability for text-based image personalization

Hengzhou Ding, Raja Bala, Zhigang Fan, Charles Bouman, Jan Allebach

Proceedings Volume 8302, 83020S (2012) https://doi.org/10.1117/12.914251

KEYWORDS: Distance measurement, Image analysis, Algorithm development, Visualization, Image segmentation, 3D modeling, Fluctuations and noise, Human-machine interfaces, Image processing algorithms and systems, Image quality

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Proceedings Article | 21 February 2012 Paper

Psychophysical evaluation of document visual similarity

Aziza Satkhozhina, Ildus Ahmadullin, Seungyon Lee, Zygmunt Pizlo, Jan Allebach

Proceedings Volume 8302, 83020L (2012) https://doi.org/10.1117/12.910860

KEYWORDS: Visualization, Matrices, Human subjects, Databases, Expectation maximization algorithms, Algorithm development, MATLAB, Classification systems, Image classification, Image compression

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Proceedings Article | 21 February 2012 Paper

Automatic design of magazine covers

Ali Jahanian, Jerry Liu, Daniel Tretter, Qian Lin, Niranjan Damera-Venkata, Eamonn O'Brien-Strain, Seungyon Lee, Jian Fan, Jan Allebach

Proceedings Volume 8302, 83020N (2012) https://doi.org/10.1117/12.914596

KEYWORDS: Visualization, Chemical elements, Binary data, Internet, Process modeling, Image fusion, RGB color model, Alternate lighting of surfaces, Software frameworks, Web services

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Proceedings Article | 21 February 2012 Paper

Ildus Ahmadullin, Jan Allebach

Proceedings Volume 8302, 83020M (2012) https://doi.org/10.1117/12.915679

KEYWORDS: Databases, Visualization, Expectation maximization algorithms, Dysprosium, Zoom lenses, Computer engineering, Document management, Printing, Web 2.0 technologies, Fluctuations and noise

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Proceedings Article | 10 February 2012 Paper

Text replacement on cylindrical surfaces: a semi-automatic approach

Hengzhou Ding, Raja Bala, Zhigang Fan, Charles Bouman, Jan Allebach

Proceedings Volume 8296, 82960X (2012) https://doi.org/10.1117/12.914247

KEYWORDS: 3D modeling, 3D image processing, Image segmentation, Lawrencium, Ear, Coded apertures, RGB color model, Lithium, Data modeling, Computer engineering

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Proceedings Article | 25 January 2012 Paper

Psychophysical evaluation of banding visibility in the presence of print content

Jia Zhang, Hila Nachlieli, Doron Shaked, Smadar Shiffman, Jan Allebach

Proceedings Volume 8293, 82930S (2012) https://doi.org/10.1117/12.911937

KEYWORDS: Visibility, Printing, Human-machine interfaces, Image quality, Visualization, Image resolution, Prototyping, LCDs, Computer simulations, Image processing

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Proceedings Article | 25 January 2012 Paper

Measuring the modulation transfer function of image capture devices: what do the numbers really mean?

Xujie Zhang, Tamar Kashti, Dror Kella, Tal Frank, Doron Shaked, Robert Ulichney, Mani Fischer, Jan Allebach

Proceedings Volume 8293, 829307 (2012) https://doi.org/10.1117/12.912989

KEYWORDS: Modulation transfer functions, Modulation, Contrast transfer function, Scanners, Direct methods, Imaging systems, Cameras, Point spread functions, Reflectivity, Convolution

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Proceedings Article | 25 January 2012 Paper

Print quality analysis for ink-saving algorithms

Maria Ortiz Segovia, Nicolas Bonnier, Jan Allebach

Proceedings Volume 8293, 82930Q (2012) https://doi.org/10.1117/12.907864

KEYWORDS: Printing, Image filtering, CMYK color model, Image quality, Visualization, Image processing, Visibility, Optical filters, Skin, Halftones

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Proceedings Article | 25 January 2012 Paper

Masking mediated print defect visibility predictor

Xiaochen Jing, Hila Nachlieli, Doron Shaked, Smadar Shiffman, Jan Allebach

Proceedings Volume 8293, 82930R (2012) https://doi.org/10.1117/12.911912

KEYWORDS: Visibility, Digital imaging, Image quality, Printing, Process modeling, Visual process modeling, Image processing, Image segmentation, Quantization, Visual system

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Proceedings Article | 25 January 2012 Paper

A color quantization algorithm based on minimization of modified Lp norm error in a CIELAB space

Haitao Xue, Peter Bauer, Dejan Depalov, Brent Bradburn, Jan Allebach, Charles Bouman

Proceedings Volume 8292, 82920O (2012) https://doi.org/10.1117/12.912146

KEYWORDS: Quantization, Distortion, Binary data, Visualization, Image segmentation, Color difference, Image quality, Image compression, Algorithm development, Signal processing

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Proceedings Article | 25 January 2012 Paper

The lattice-based screen set: a square N-color all-orders Moire-free screen set

Yung-Yao Chen, Mani Fischer, Tamar Kashti, Doron Shaked, Jan Allebach

Proceedings Volume 8292, 82920Y (2012) https://doi.org/10.1117/12.912297

KEYWORDS: Halftones, Printing, Color printing, Amplitude modulation, Frequency modulation, Superposition, Modulation, Spatial resolution, Binary data, Fermium

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Periodic clustered-dot screens are widely used for electrophotographic printers due to their print stability. However, moir´e is a ubiquitous problem that arises in color printing due to the beating together of the clustered-dot, periodic halftone patterns that are used to represent different colorants. This beating or interference phenomenon introduces spurious low frequency (large period) patterns in the printed output that are very objectionable to the viewer. The traditional solution in the graphic arts and printing industry is to rotate identical square screens to angles that are maximally separated from each other. For example, the classic three-color screen set rotates three identical square screens to the angles 15°, 45°, and 75°, respectively. However, the effectiveness of this approach is limited when printing with more than four colorants, i.e. N-color printing, where N >4. Moreover, accurately achieving the angles that have maximum angular separation requires a very high resolution plate writer, as is used in commercial offset printing. In this paper, we propose a systematic way to design color screen sets for periodic, clustered-dot screens that offers more explicit control of the moir´e properties of the resulting screens when used in color printing. We find a general concept for moir´e-free screen design that is called lattice-based screen design. The basic concept behind our approach is the creation of the screen set on a 2-dimensional lattice in the frequency domain and then picking each fundamental frequency vector of the individual colorant planes in the created spectral lattice according to the desired properties. The halftone geometry of a screen set is the set of angles and frequencies in units of lines per inch (LPI) of each screen plane. The lattice-based screen design offers more flexibility in designing N-color screen sets with different halftone geometries, and all of them are guaranteed to be all-orders moir´e-free. For example, by creating a square lattice in the frequency domain, square N-color moir´e-free screen sets that consist of N rotated square screens can be achieved. The proposed approach maintains the advantage of square clustered-dot screen design and is based on low addressability of digital printing. We also propose several symmetry measures, and use them to compare the proposed 4-color square screen set and the screen sets based on a previous moir´e-free N-color non-orthogonal approach. The proposed screen set is shown to have better symmetry properties.

Proceedings Article | 25 January 2012 Paper

Color-dependent banding characterization and simulation on natural document images

Sirui Hu, Hila Nachlieli, Doron Shaked, Smadar Shiffman, Jan Allebach

Proceedings Volume 8292, 82920W (2012) https://doi.org/10.1117/12.912901

KEYWORDS: Prototyping, CMYK color model, RGB color model, Printing, Signal processing, Curium, Principal component analysis, Modulation, Calibration, Scanners

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Proceedings Article | 25 January 2012 Paper

Halftone blending between smooth and detail screens to improve print quality with electrophotographic printers

Seong Jun Park, Mark Shaw, George Kerby, Terry Nelson, Di-Yuan Tzeng, Victor Loewen, Kurt Bengtson, Jan Allebach

Proceedings Volume 8292, 829210 (2012) https://doi.org/10.1117/12.913948

KEYWORDS: Halftones, Printing, Nonimpact printing, Modulation, Switching, Calibration, Optical proximity correction, Image processing, Matrices, Image quality

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Proceedings Article | 25 January 2012 Paper

Modeling large-area influence in digital halftoning for electrophotographic printers

Yanling Ju, Dhruv Saxena, Tamar Kashti, Dror Kella, Doron Shaked, Mani Fischer, Robert Ulichney, Jan Allebach

Proceedings Volume 8292, 82920X (2012) https://doi.org/10.1117/12.912769

KEYWORDS: Printing, Halftones, Stochastic processes, Binary data, Analytical research, Electrophotography, Light scattering, Image resolution, Scanners, Statistical analysis

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Proceedings Article | 25 January 2012 Paper

Ink-saving strategy based on document content characterization and halftone textures

Maria Ortiz Segovia, Nicolas Bonnier, Jan Allebach

Proceedings Volume 8292, 829211 (2012) https://doi.org/10.1117/12.907878

KEYWORDS: Printing, Halftones, Raster graphics, Visualization, Image processing, Composites, Binary data, Color management, Stochastic processes, Skin

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Proceedings Article | 7 February 2011 Paper

Personalized imaging: moving closer to reality

Hengzhou Ding, Raja Bala, Zhigang Fan, Charles Bouman, Jan Allebach

Proceedings Volume 7879, 787908 (2011) https://doi.org/10.1117/12.881740

KEYWORDS: Image segmentation, Edge detection, Detection and tracking algorithms, 3D modeling, 3D image processing, Image processing algorithms and systems, Image processing, Electronic imaging, Cameras, Sensors

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Proceedings Article | 7 February 2011 Paper

Ildus Ahmadullin, Jian Fan, Niranjan Damera-Venkata, Suk Hwan Lim, Qian Lin, Jerry Liu, Sam Liu, Eamonn O'Brien-Strain, Jan Allebach

Proceedings Volume 7879, 787909 (2011) https://doi.org/10.1117/12.877268

KEYWORDS: Visualization, Databases, Expectation maximization algorithms, Zoom lenses, Image segmentation, Dubnium, Feature extraction, Darmstadtium, RGB color model, Detection and tracking algorithms

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Proceedings Article | 7 February 2011 Paper

A web-based troubleshooting tool to help customers self-solve color issues with a digital printing workflow

Hector Santos-Villalobos, Victor Loewen, Mark Lehto, Jan Allebach

Proceedings Volume 7879, 787906 (2011) https://doi.org/10.1117/12.877500

KEYWORDS: Printing, Solids, Nonimpact printing, Visualization, Color printing, Diagnostics, Human subjects, Simulation of CCA and DLA aggregates, Manufacturing, Imaging systems

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Proceedings Article | 7 February 2011 Paper

Aesthetic role of transparency and layering in the creation of photo layouts

Maria Ortiz Segovia, Niranjan Damera-Venkata, Eamonn O'Brien-Strain, Jian Fan, Suk Hwan Lim, Sam Liu, Jerry Liu, Qian Lin, Jan Allebach

Proceedings Volume 7879, 78790B (2011) https://doi.org/10.1117/12.877269

KEYWORDS: Visualization, Graphic design, Transparency, Image processing, Photography, Databases, Software development, Eye, Visual process modeling, Silicon

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Proceedings Article | 25 January 2011 Paper

Design of color screen tile vector sets

Jin-Young Kim, Yung-Yao Chen, Mani Fischer, Omri Shacham, Carl Staelin, Kurt Bengtson, Jan Allebach

Proceedings Volume 7866, 78661C (2011) https://doi.org/10.1117/12.878658

KEYWORDS: Halftones, Printing, Visible radiation, Spectrum analysis, Matrices, Binary data, Spatial frequencies, Superposition, Linear filtering, Fermium

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Proceedings Article | 25 January 2011 Paper

Cost function analysis for stochastic clustered-dot halftoning based on direct binary search

Puneet Goyal, Madhur Gupta, Carl Staelin, Mani Fischer, Omri Shacham, Jan Allebach

Proceedings Volume 7866, 78661A (2011) https://doi.org/10.1117/12.878598

KEYWORDS: Halftones, Stochastic processes, Binary data, Printing, Image filtering, Image processing, Diffusion, Spatial frequencies, Inkjet technology, Modulation

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Proceedings Article | 25 January 2011 Paper

Stochastic clustered-dot screen design for improved smoothness

Madhur Gupta, Puneet Goyal, Mani Fischer, Carl Staelin, Tamar Kashti, Omri Shacham, Jan Allebach

Proceedings Volume 7866, 78661B (2011) https://doi.org/10.1117/12.878599

KEYWORDS: Halftones, Stochastic processes, Printing, Raised cosine filters, Gaussian filters, Binary data, Linear filtering, Image processing, Spatial resolution, Spatial frequencies

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Proceedings Article | 24 January 2011 Paper

Predicting preferred coring level to reduce toner scatter in electrophotographic printing

Hyung Jun Park, Jan Allebach

Proceedings Volume 7867, 78670A (2011) https://doi.org/10.1117/12.876462

KEYWORDS: Image quality, Reflectivity, Printing, Particles, Scanners, Imaging systems, Photoresistors, Visualization, Image processing, Visual process modeling

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SPIE Journal Paper | 1 October 2010 Open Access

Changing of the Guard

Jan Allebach

JEI, Vol. 19, Issue 04, 040101, (October 2010) https://doi.org/10.1117/12.10.1117/1.3518141

KEYWORDS: Electronic imaging, Machine vision, Human vision and color perception, Inspection, Multimedia

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Proceedings Article | 10 February 2010 Paper

An investigation of document aesthetics for web-to-print repurposing of small-medium business marketing collateral

J. Allebach, Maria Ortiz Segovia, C. Brian Atkins, Eamonn O'Brien-Strain, Niranjan Damera-Venkata, Nina Bhatti, Jerry Liu, Qian Lin

Proceedings Volume 7540, 75400G (2010) https://doi.org/10.1117/12.843923

KEYWORDS: Graphic arts, Visualization, Printing, Graphic design, Software development, Transparency, Computer engineering, Computer science, Imaging systems, Standards development

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Proceedings Article | 10 February 2010 Paper

Automatic eye enhancement by sclera whitening

Changhyung Lee, Morgan Schramm, Mireille Boutin, Jan Allebach

Proceedings Volume 7540, 75400Q (2010) https://doi.org/10.1117/12.840452

KEYWORDS: Sclera, Eye, Facial recognition systems, Image processing, Chromium, Image enhancement, Veins, Sensors, Picosecond phenomena, Detection and tracking algorithms

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Proceedings Article | 10 February 2010 Paper

Semi-automatic image personalization tool for variable text insertion and replacement

Hengzhou Ding, Raja Bala, Zhigang Fan, Reiner Eschbach, Charles Bouman, Jan Allebach

Proceedings Volume 7540, 75400N (2010) https://doi.org/10.1117/12.843729

KEYWORDS: Human-machine interfaces, Java, 3D image processing, Detection and tracking algorithms, Image display, Visualization, Graphic design, Databases, Algorithm development, 3D modeling

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Proceedings Article | 6 February 2010 Paper

Semi-automatic object geometry estimation for image personalization

Hengzhou Ding, Raja Bala, Zhigang Fan, Reiner Eschbach, Charles Bouman, Jan Allebach

Proceedings Volume 7533, 753304 (2010) https://doi.org/10.1117/12.843828

KEYWORDS: 3D modeling, Image processing, Image segmentation, Coded apertures, Hough transforms, 3D image processing, Distance measurement, Visualization, Process modeling, Image filtering

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Proceedings Article | 19 January 2010 Paper

Electro-photographic-model-based halftoning

Puneet Goyal, Madhur Gupta, Doron Shaked, Carl Staelin, Mani Fischer, Omri Shacham, Rodolfo Jodra, Jan Allebach

Proceedings Volume 7528, 752810 (2010) https://doi.org/10.1117/12.843968

KEYWORDS: Printing, Halftones, Stochastic processes, Binary data, Image filtering, Liquids, Digital imaging, Algorithm development, Image processing, Visual process modeling

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Proceedings Article | 19 January 2010 Paper

A joint color trapping strategy for raster images

Haiyin Wang, Mireille Boutin, Jeffery Trask, Jan Allebach

Proceedings Volume 7528, 75280C (2010) https://doi.org/10.1117/12.840426

KEYWORDS: Raster graphics, Edge detection, Image segmentation, Image processing, Feature extraction, Printing, Data processing, Double patterning technology, Visualization, Tantalum

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Proceedings Article | 19 January 2010 Paper

Clustered-dot halftoning with direct binary search

Madhur Gupta, Carl Staelin, Mani Fischer, Omri Shacham, Rodolfo Jodra, Jan Allebach

Proceedings Volume 7528, 752812 (2010) https://doi.org/10.1117/12.843971

KEYWORDS: Halftones, Image filtering, Stochastic processes, Binary data, Printing, Linear filtering, Inkjet technology, Algorithm development, Diffusion, Gaussian filters

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SPIE Journal Paper | 1 January 2010

Psychophysical investigation of the effect of coring on perceived toner scatter

Hyung Jun Park, Jan Allebach, Zygmunt Pizlo

JEI, Vol. 19, Issue 01, 011008, (January 2010) https://doi.org/10.1117/12.10.1117/1.3267102

KEYWORDS: Image quality, Printing, Nonimpact printing, Image compression, Optical proximity correction, Raster graphics, CMYK color model, Image processing, Image storage, Human subjects

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Proceedings Article | 18 February 2009 Paper

Fast space-varying convolution and its application in stray light reduction

Jianing Wei, Guangzhi Cao, Charles Bouman, Jan Allebach

Proceedings Volume 7246, 72460B (2009) https://doi.org/10.1117/12.813512

KEYWORDS: Stray light, Convolution, Wavelet transforms, Data compression, Point spread functions, Quantization, Wavelets, Transform theory, Digital photography, Imaging systems

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Proceedings Article | 4 February 2009 Paper

Improvements on image authentication and recovery using distributed source coding

Nitin Khanna, Antoni Roca, George Chiu, Jan Allebach, Edward Delp

Proceedings Volume 7254, 725415 (2009) https://doi.org/10.1117/12.807352

KEYWORDS: Image compression, Expectation maximization algorithms, Digital imaging, Data compression, Image encryption, Computer programming, Digital watermarking, Image restoration, Quantization, Evolutionary algorithms

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Proceedings Article | 4 February 2009 Paper

High-capacity data hiding in text documents

Aravind Mikkilineni, George Chiu, Jan Allebach, Edward Delp

Proceedings Volume 7254, 72540X (2009) https://doi.org/10.1117/12.805960

KEYWORDS: Printing, Modulation, Signal detection, Digital watermarking, Information security, Data hiding, Linear filtering, Optical proximity correction, Manufacturing, Particles

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Proceedings Article | 19 January 2009 Paper

Determination of optimal coring values from psychophysical experiments

Hyung Jun Park, Zygmunt Pizlo, Jan Allebach

Proceedings Volume 7242, 72420K (2009) https://doi.org/10.1117/12.805375

KEYWORDS: Nonimpact printing, Printing, Image quality, Image compression, Raster graphics, Image storage, CMYK color model, Particles, RGB color model, Image resolution

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Proceedings Article | 19 January 2009 Paper

Houston, we have a color issue!

Hector Santos-Villalobos, Victor Loewen, Jan Allebach

Proceedings Volume 7241, 72411D (2009) https://doi.org/10.1117/12.805974

KEYWORDS: Color imaging, Color printing, Imaging systems, Electronic imaging, Current controlled current source, Diagnostics, Computing systems, Printing

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SPIE Journal Paper | 1 October 2008

Document page classification algorithms in low-end copy pipeline

Xiaogang Dong, Kai-Lung Hua, Peter Majewicz, Gordon McNutt, Charles Bouman, Jan Allebach, Ilya Pollak

JEI, Vol. 17, Issue 04, 043011, (October 2008) https://doi.org/10.1117/12.10.1117/1.3010879

KEYWORDS: Image classification, RGB color model, Image processing, Halftones, Visualization, Solids, Algorithm development, Image processing algorithms and systems, Image filtering, Feature extraction

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SPIE Journal Paper | 1 April 2008

Nearest-neighbor and bilinear resampling factor estimation to detect blockiness or blurriness of an image

Ariawan Suwendi, Jan Allebach

JEI, Vol. 17, Issue 02, 023005, (April 2008) https://doi.org/10.1117/12.10.1117/1.2912053

KEYWORDS: Factor analysis, Detection and tracking algorithms, Image processing, Digital watermarking, Digital imaging, Image analysis, Image segmentation, MATLAB, Printing, Statistical analysis

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Proceedings Article | 18 March 2008 Paper

Scanner identification with extension to forgery detection

Nitin Khanna, George Chiu, Jan Allebach, Edward Delp

Proceedings Volume 6819, 68190G (2008) https://doi.org/10.1117/12.772048

KEYWORDS: Scanners, Sensors, Detection and tracking algorithms, Optical sensors, Feature extraction, Digital cameras, Image resolution, Forensic science, Image filtering, CCD image sensors

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Proceedings Article | 3 March 2008 Paper

Stray light and shading reduction in digital photography: a new model and algorithm

Jianing Wei, Burak Bitlis, Alan Bernstein, Akila de Silva, Peter Jansson, Jan Allebach

Proceedings Volume 6817, 68170H (2008) https://doi.org/10.1117/12.768562

KEYWORDS: Point spread functions, Stray light, Cameras, Light scattering, Scattering, Digital photography, Imaging systems, Digital cameras, Image restoration, Diffraction

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Proceedings Article | 28 January 2008 Paper

Development of softcopy environment for primary color banding visibility assessment

Byungseok Min, Zygmunt Pizlo, Jan Allebach

Proceedings Volume 6808, 68080A (2008) https://doi.org/10.1117/12.773343

KEYWORDS: Printing, Calibration, Visibility, Eye, Nonimpact printing, Environmental monitoring, Scanners, Modulation, Image processing, Colorimetry

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Fine-pitch banding is one of the most unwanted artifacts in laser electrophotographic (EP) printers. It is perceived as a quasiperiodic fluctuation in the process direction. Therefore, it is essential for printer vendors to know how banding is perceived by humans in order to improve print quality. Monochrome banding has been analyzed and assessed by many researchers; but there is no literature that deals with the banding of color laser printers as measured from actual prints. The study of color banding is complicated by the fact that the color banding signal is physically defined in a three-dimensional color space, while banding perception is described in a one-dimensional sense such as more banding or less banding. In addition, the color banding signal arises from the independent contributions of the four primary colorant banding signals. It is not known how these four distinct signals combine to give rise to the perception of color banding. In this paper, we develop a methodology to assess the banding visibility of the primary colorant cyan based on human visual perception. This is our first step toward studying the more general problem of color banding in combinations of two or more colorants. According to our method, we print and scan the cyan test patch, and extract the banding profile as a one dimensional signal so that we can freely adjust the intensity of banding. Thereafter, by exploiting the pulse width modulation capability of the laser printer, the extracted banding profile is used to modulate a pattern consisting of periodic lines oriented in the process direction, to generate extrinsic banding. This avoids the effect of the halftoning algorithm on the banding. Furthermore, to conduct various banding assessments more efficiently, we also develop a softcopy environment that emulates a hardcopy image on a calibrated monitor, which requires highly accurate device calibration throughout the whole system. To achieve the same color appearance as the hardcopy, we perform haploscopic matching experiments that allow each eye to independently adapt to different viewing conditions; and we find an appearance mapping function in the adapted XYZ space. Finally, to validate the accuracy of the softcopy environment, we conduct a banding matching experiment at three different banding levels by the memory matching method, and confirm that our softcopy environment produces the same banding perception as the hardcopy. In addition, we perform two more separate psychophysical experiments to measure the differential threshold of the intrinsic banding in both the hardcopy and softcopy environments, and confirm that the two thresholds are statistically identical. The results show that with our target printer, human subjects can see a just noticeable difference with a 9% reduction in the banding magnitude for the cyan colorant.

Proceedings Article | 28 January 2008 Paper

An efficient low-complexity approach to color trapping

Haiyin Wang, Mireille Boutin, Jeffery Trask, Jan Allebach

Proceedings Volume 6807, 680716 (2008) https://doi.org/10.1117/12.778620

KEYWORDS: Printing, Feature extraction, Visualization, Algorithm development, Tolerancing, Image processing, Edge detection, Image quality, Image resolution, Raster graphics

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Proceedings Article | 1 March 2007 Paper

Forensic classification of imaging sensor types

Nitin Khanna, Aravind Mikkilineni, George Chiu, Jan Allebach, Edward Delp

Proceedings Volume 6505, 65050U (2007) https://doi.org/10.1117/12.705849

KEYWORDS: Scanners, Cameras, Sensors, Digital cameras, Optical sensors, CCD image sensors, CCD cameras, Image classification, Optical filters, Image resolution

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Proceedings Article | 1 March 2007 Paper

Scanner identification using sensor pattern noise

Nitin Khanna, Aravind Mikkilineni, George Chiu, Jan Allebach, Edward Delp

Proceedings Volume 6505, 65051K (2007) https://doi.org/10.1117/12.705837

KEYWORDS: Scanners, Sensors, Cameras, Digital cameras, Optical sensors, Image classification, Image resolution, Image compression, Charge-coupled devices, CCD image sensors

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Proceedings Article | 1 March 2007 Paper

Channel model and operational capacity analysis of printed text documents

Aravind Mikkilineni, Pei-Ju Chiang, George Chiu, Jan Allebach, Edward Delp

Proceedings Volume 6505, 65051U (2007) https://doi.org/10.1117/12.704136

KEYWORDS: Printing, Modulation, Digital watermarking, Optical proximity correction, Photoresistors, Sensors, Signal processing, Amplitude modulation, Information security, Particles

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Proceedings Article | 28 February 2007 Paper

Parametric point spread function modeling and reduction of stray light effects in digital still cameras

Burak Bitlis, Peter Jansson, Jan Allebach

Proceedings Volume 6498, 64980V (2007) https://doi.org/10.1117/12.715101

KEYWORDS: Point spread functions, Stray light, Imaging systems, Cameras, Scattering, Digital cameras, Image analysis, Optical imaging, Light scattering, Optical components

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Proceedings Article | 29 January 2007 Paper

The hybrid screen: improving the breed

Changhyung Lee, Jan Allebach

Proceedings Volume 6493, 649318 (2007) https://doi.org/10.1117/12.711183

KEYWORDS: Curium, Halftones, Spatial filters, Image filtering, Printing, Stochastic processes, Image resolution, Visual system, Optical filters, Spatial frequencies

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Proceedings Article | 29 January 2007 Paper

AM/FM halftoning: improved cost function and training framework

Seong Wook Han, Mehul Jain, Roy Kumontoy, Charles Bouman, Peter Majewicz, Jan Allebach

Proceedings Volume 6493, 64931B (2007) https://doi.org/10.1117/12.716939

KEYWORDS: Printing, Halftones, Fermium, Frequency modulation, Diffusion, Amplitude modulation, Modulation, Distortion, Detection and tracking algorithms, Image quality

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Proceedings Article | 17 February 2006 Paper

Nearest-neighbor and bilinear resampling factor estimation to detect blockiness or blurriness of an image

Ariawan Suwendi, Jan Allebach

Proceedings Volume 6076, 60760C (2006) https://doi.org/10.1117/12.647924

KEYWORDS: Factor analysis, Detection and tracking algorithms, Digital watermarking, Digital imaging, Analytical research, Bismuth, Image processing, Image compression, Image quality, Image analysis

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Proceedings Article | 17 February 2006 Paper

Measurement of ringing artifacts in JPEG images

Xiaojun Feng, Jan Allebach

Proceedings Volume 6076, 60760A (2006) https://doi.org/10.1117/12.645089

KEYWORDS: Visibility, Visualization, Edge detection, Image segmentation, Image compression, Quantization, Image quality, Lithium, Detection and tracking algorithms, Chromium

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Proceedings Article | 17 February 2006 Paper

Analytical model of skew effect in digital press characterization

Mu Qiao, Jan Allebach

Proceedings Volume 6076, 60760D (2006) https://doi.org/10.1117/12.660252

KEYWORDS: Modulation transfer functions, Spatial frequencies, Tolerancing, Printing, Fourier transforms, Image processing, Error analysis, Image analysis, Image resolution, Image registration

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Proceedings Article | 16 February 2006 Paper

Information embedding and extraction for electrophotographic printing processes

Aravind Mikkilineni, Pei-Ju Chiang, Sungjoo Suh, George T. Chiu, Jan Allebach, Edward Delp

Proceedings Volume 6072, 607210 (2006) https://doi.org/10.1117/12.655088

KEYWORDS: Printing, Modulation, Digital watermarking, Signal processing, Signal detection, Photoresistors, Amplitude modulation, Optical proximity correction, Information security, Particles

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Proceedings Article | 17 January 2006 Paper

Characterization of printer MTF

Woonyoung Jang, Jan Allebach

Proceedings Volume 6059, 60590D (2006) https://doi.org/10.1117/12.639295

KEYWORDS: Modulation transfer functions, Modulation, Printing, Scanners, RGB color model, Calibration, Inkjet technology, Imaging systems, Spatial frequencies, Color difference

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Proceedings Article | 17 January 2006 Paper

Improved pen alignment for bidirectional printing

Edgar Bernal, Jan Allebach, Zygmunt Pizlo

Proceedings Volume 6059, 60590R (2006) https://doi.org/10.1117/12.651334

KEYWORDS: Printing, Inkjet technology, Image processing, Satellites, Image segmentation, Scanners, Algorithm development, Signal detection, Solids, Image quality

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SPIE Journal Paper | 1 April 2005

Block interlaced pinwheel error diffusion

Pingshan Li, Jan Allebach

JEI, Vol. 14, Issue 02, 023007, (April 2005) https://doi.org/10.1117/12.10.1117/1.1900136

KEYWORDS: Diffusion, Image processing, Halftones, Image storage, Printing, Image quality, Binary data, Raster graphics, Image filtering, Digital signal processing

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SPIE Journal Paper | 1 April 2005

Optimal unsharp mask for image sharpening and noise removal

Sang Ho Kim, Jan Allebach

JEI, Vol. 14, Issue 02, 023005, (April 2005) https://doi.org/10.1117/12.10.1117/1.1924510

KEYWORDS: Linear filtering, Photography, Modulation transfer functions, Image restoration, Scanners, Cameras, Image filtering, Digital imaging, Image processing, Point spread functions

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SPIE Journal Paper | 1 April 2005 Open Access

Editorial: JEI Letters

Jan Allebach

JEI, Vol. 14, Issue 02, 020101, (April 2005) https://doi.org/10.1117/12.10.1117/1.1940062

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Proceedings Article | 21 March 2005 Paper

Printer identification based on graylevel co-occurrence features for security and forensic applications

Aravind Mikkilineni, Pei-Ju Chiang, Gazi Ali, George Chiu, Jan Allebach, Edward Delp

Proceedings Volume 5681, (2005) https://doi.org/10.1117/12.593796

KEYWORDS: Printing, Digital watermarking, Information security, Forensic science, Optical proximity correction, Nonimpact printing, Image analysis, Manufacturing, Particles, Video

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Proceedings Article | 23 February 2005 Paper

Haze removal for image enhancement

Maria Groszek, Jan Allebach

Proceedings Volume 5678, (2005) https://doi.org/10.1117/12.593054

KEYWORDS: Image enhancement, Air contamination, Image contrast enhancement, Expectation maximization algorithms, Image quality, Image processing, Digital imaging, Digital photography, Light scattering, Scattering

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Proceedings Article | 17 January 2005 Paper

An investigation of perceived sharpness and sharpness metrics

Buyue Zhang, Jan Allebach, Zygmunt Pizlo

Proceedings Volume 5668, (2005) https://doi.org/10.1117/12.584627

KEYWORDS: Decision support systems, Digital imaging, Digital photography, Image filtering, Digital image correlation, Image quality, Image analysis, Imaging systems, Gaussian filters, Visualization

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Proceedings Article | 17 January 2005 Paper

Softcopy banding visibility assessment

Osman Arslan, Zygmunt Pizlo, Jan Allebach

Proceedings Volume 5668, (2005) https://doi.org/10.1117/12.593684

KEYWORDS: Printing, Visibility, Halftones, Image quality, Calibration, Nonimpact printing, Prototyping, Environmental monitoring, Image resolution, Solids

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Proceedings Article | 17 January 2005 Paper

Quantization of accumulated diffused errors in error diffusion

Ti-chiun Chang, Jan Allebach

Proceedings Volume 5667, (2005) https://doi.org/10.1117/12.584688

KEYWORDS: Quantization, Diffusion, Image quality, Halftones, Computer programming, Error analysis, Image processing, Printing, Raster graphics, Distortion

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SPIE Journal Paper | 1 January 2005 Open Access

Editorial: JEI Begins ‘‘e-First’’ Publication

Jan Allebach

JEI, Vol. 14, Issue 01, 010101, (January 2005) https://doi.org/10.1117/12.10.1117/1.1868715

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Proceedings Article | 22 June 2004 Paper

Signature-embedding in printed documents for security and forensic applications

Aravind Mikkilineni, Gazi Ali, Pei-Ju Chiang, George Chiu, Jan Allebach, Edward Delp

Proceedings Volume 5306, (2004) https://doi.org/10.1117/12.531944

KEYWORDS: Printing, Digital watermarking, Halftones, Image processing, Signal processing, Optical proximity correction, Information security, Data hiding, Forensic science, Security printing

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Proceedings Article | 21 May 2004 Paper

Optimal unsharp mask for image sharpening and noise removal

Sang Ho Kim, Jan Allebach

Proceedings Volume 5299, (2004) https://doi.org/10.1117/12.538366

KEYWORDS: Image filtering, Digital filtering, Photography, Nonlinear filtering, Cameras, Linear filtering, Imaging systems, Modulation transfer functions, Analog electronics, Image processing

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SPIE Journal Paper | 1 April 2004

Token-based error diffusion for high quality halftoning with good compression and low complexity

Je-Ho Lee, Jan Allebach

JEI, Vol. 13, Issue 02, (April 2004) https://doi.org/10.1117/12.10.1117/1.1666875

KEYWORDS: Visualization, Computer programming, Image processing, Image quality standards, Image quality, Binary data, Printing, Diffusion, Image compression, Halftones

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Proceedings Article | 18 December 2003 Paper

Boundary stitching algorithm for parallel implementation of error diffusion

Zhen He, Tichiun Chang, Jan Allebach, Charles Bouman

Proceedings Volume 5293, (2003) https://doi.org/10.1117/12.538667

KEYWORDS: Diffusion, Binary data, Digital signal processing, Halftones, Modulation, Image processing, Printing, Fermium, Frequency modulation, Visualization

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Proceedings Article | 18 December 2003 Paper

A subspace matching color filter design methodology for a multispectral imaging system

Du-Yong Ng, Jan Allebach

Proceedings Volume 5293, (2003) https://doi.org/10.1117/12.530394

KEYWORDS: Optical filters, Reflectivity, Cameras, Sensors, Imaging systems, Teeth, Transmittance, Error analysis, Image filtering, Light sources

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Proceedings Article | 18 December 2003 Paper

CRT calibration techniques for better accuracy including low-luminance colors

Osman Arslan, Zygmunt Pizlo, Jan Allebach

Proceedings Volume 5293, (2003) https://doi.org/10.1117/12.530312

KEYWORDS: Calibration, RGB color model, CRTs, LCDs, Matrices, Quantization, Data modeling, Detection and tracking algorithms, MATLAB, Image display

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Proceedings Article | 18 December 2003 Paper

Generating stochastic dispersed and periodic clustered textures using a composite hybrid screen

Guo-Yau Lin, Jan Allebach

Proceedings Volume 5293, (2003) https://doi.org/10.1117/12.538582

KEYWORDS: Halftones, Composites, Stochastic processes, Printing, Binary data, Image processing, Visibility, Visualization, Control systems, Matrices

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Proceedings Article | 13 January 2003 Paper

Compressible error diffusion

Je-Ho Lee, Jan Allebach

Proceedings Volume 5008, (2003) https://doi.org/10.1117/12.476324

KEYWORDS: Halftones, Image compression, Diffusion, Image quality, Binary data, Image quality standards, Computer programming, Visualization, Image processing, Image visualization

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Proceedings Article | 13 January 2003 Paper

Memory efficient error diffusion

Ti-chiun Chang, Jan Allebach

Proceedings Volume 5008, (2003) https://doi.org/10.1117/12.479674

KEYWORDS: Halftones, Diffusion, Image processing, Raster graphics, Modulation, Binary data, Lithium, Printing, Data storage, Image storage

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SPIE Journal Paper | 1 October 2002

Colorant-based direct binary search halftoning

Je-Ho Lee, Jan Allebach

JEI, Vol. 11, Issue 04, (October 2002) https://doi.org/10.1117/12.10.1117/1.1507598

KEYWORDS: Halftones, Printing, Curium, Binary data, Visualization, Diffusion, CMYK color model, Algorithm development, Image quality, Visual process modeling

Proceedings Article | 28 December 2001 Paper

Multilevel screen design using direct binary search

Guo-Yau Lin, Jan Allebach

Proceedings Volume 4663, (2001) https://doi.org/10.1117/12.452997

KEYWORDS: Halftones, Binary data, Image processing, Image quality, Printing, Diffusion, Matrices, Visibility, Visualization, Visual system

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Proceedings Article | 28 December 2001 Paper

Tone-dependent error diffusion

Pingshan Li, Jan Allebach

Proceedings Volume 4663, (2001) https://doi.org/10.1117/12.453001

KEYWORDS: Diffusion, Halftones, Image processing, Binary data, Raster graphics, Image quality, Image filtering, Error analysis, Visualization, Digital image processing

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SPIE Journal Paper | 1 April 2001 Open Access

Editorial

Jan Allebach

JEI, Vol. 10, Issue 02, (April 2001) https://doi.org/10.1117/12.10.1117/1.1367549

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SPIE Journal Paper | 1 January 2001

Human vision and electronic imaging

Bernice Rogowitz, Thrasyvoulos Pappas, Jan Allebach

JEI, Vol. 10, Issue 01, (January 2001) https://doi.org/10.1117/12.10.1117/1.1336802

KEYWORDS: Digital libraries, Eye, Image visualization, Imaging systems, Human vision and color perception, Electronic imaging, Image quality, Image compression, Visual process modeling, Visualization

SPIE Journal Paper | 1 January 2001 Open Access

Special Section on Human Vision and Electronic Imaging

Bernice Rogowitz, Thrasyvoulos Pappas, Jan Allebach

JEI, Vol. 10, Issue 01, (January 2001) https://doi.org/10.1117/12.10.1117/1.1347796

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Proceedings Article | 21 December 2000 Paper

Impact of HVS models on model-based halftoning

Sang Ho Kim, Jan Allebach

Proceedings Volume 4300, (2000) https://doi.org/10.1117/12.410817

KEYWORDS: Halftones, Visual process modeling, Printing, Model-based design, Point spread functions, Convolution, Visual system, Algorithm development, Performance modeling, Contrast sensitivity

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Proceedings Article | 21 December 2000 Paper

DBS: retrospective and future directions

Jan Allebach

Proceedings Volume 4300, (2000) https://doi.org/10.1117/12.410810

KEYWORDS: Halftones, Printing, Binary data, Digital holography, Algorithm development, Image quality, Convolution, Image filtering, Image processing, Fourier transforms

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Proceedings Article | 21 December 2000 Paper

Optimal clustered-dot color screen design based on a human visual system model

Farhan Baqai, Jan Allebach

Proceedings Volume 4300, (2000) https://doi.org/10.1117/12.410815

KEYWORDS: Halftones, Moire patterns, Matrices, Printing, Visual process modeling, Visual system, CMYK color model, Image registration, Instrument modeling, Spatial frequencies

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SPIE Journal Paper | 1 April 2000

Halftone postprocessing for improved rendition of highlights and shadows

Clayton Atkins, Jan Allebach, Charles Bouman

JEI, Vol. 9, Issue 02, (April 2000) https://doi.org/10.1117/12.10.1117/1.482735

KEYWORDS: Image segmentation, Printing, Digital image processing, Image processing algorithms and systems, Binary data, Imaging arrays, Image processing, Edge detection, Diffusion, Halftones

Proceedings Article | 21 December 1999 Paper

Electrophotographic process embedded in direct binary search

Dhiraj Kacker, Tom Camis, Jan Allebach

Proceedings Volume 3963, (1999) https://doi.org/10.1117/12.373437

KEYWORDS: Modulation, Optical proximity correction, Printing, Halftones, Binary data, Image processing, Nonimpact printing, Eye models, Algorithm development, Particles

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Proceedings Article | 21 December 1999 Paper

Model-based color halftoning using direct binary search

A. Agar, Jan Allebach

Proceedings Volume 3963, (1999) https://doi.org/10.1117/12.373434

KEYWORDS: Printing, Halftones, Calibration, RGB color model, CMYK color model, Binary data, Visual process modeling, Algorithm development, Diffusion, Color imaging

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SPIE Press Book | 30 May 1999

Selected Papers on Digital Halftoning

Proceedings Article | 17 July 1998 Paper

Perceptually relevant image fidelity

Christopher Taylor, Zygmunt Pizlo, Jan Allebach

Proceedings Volume 3299, (1998) https://doi.org/10.1117/12.320102

KEYWORDS: Distortion, Image compression, Image processing, Visualization, Image analysis, Digital imaging, Quantization, Imaging arrays, Digital filtering, Human subjects

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Proceedings Article | 17 July 1998 Paper

Building bridges between human vision and electronic imaging: a ten-year retrospective

Bernice Rogowitz, Thrasyvoulos Pappas, Jan Allebach

Proceedings Volume 3299, (1998) https://doi.org/10.1117/12.320098

KEYWORDS: Visualization, Image quality, Visual process modeling, Image compression, Electronic imaging, Human vision and color perception, Imaging systems, Image visualization, Visual compression, Visual analytics

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Proceedings Article | 17 July 1998 Paper

Human vision and image rendering: is the story over, or is it just beginning?

Jan Allebach

Proceedings Volume 3299, (1998) https://doi.org/10.1117/12.320118

KEYWORDS: Visual process modeling, Halftones, Algorithm development, Printing, Visualization, Visual system, Point spread functions, Human vision and color perception, Digital imaging, Binary data

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Proceedings Article | 2 January 1998 Paper

Color FM screen design using DBS algorithm

Qian Lin, Jan Allebach

Proceedings Volume 3300, (1998) https://doi.org/10.1117/12.298298

KEYWORDS: Halftones, Printing, Matrices, CMYK color model, Binary data, Fermium, Frequency modulation, Stochastic processes, Image quality, Visual system

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Proceedings Article | 2 January 1998 Paper

Aperiodic microscreen design using DBS and training

Dhiraj Kacker, Jan Allebach

Proceedings Volume 3300, (1998) https://doi.org/10.1117/12.298301

KEYWORDS: Halftones, Image resolution, Databases, Visualization, Radon, Printing, Binary data, Visual system, Silicon, Image quality

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Proceedings Article | 3 June 1997 Paper

Methodology for designing image similarity metrics based on human visual system models

Thomas Frese, Charles Bouman, Jan Allebach

Proceedings Volume 3016, (1997) https://doi.org/10.1117/12.274545

KEYWORDS: Visualization, Visual process modeling, Human subjects, Visual system, Feature extraction, Databases, Image compression, Image processing, Performance modeling, Quantization

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Proceedings Article | 3 June 1997 Paper

Image quality assessment with a Gabor pyramid model of the human visual system

Christopher Taylor, Zygmunt Pizlo, Jan Allebach, Charles Bouman

Proceedings Volume 3016, (1997) https://doi.org/10.1117/12.274541

KEYWORDS: Image quality, Visual system, Visual process modeling, Spatial frequencies, Performance modeling, Image processing, Contrast sensitivity, Image compression, Visibility, Data modeling

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Proceedings Article | 4 April 1997 Paper

Optimum error-diffusion kernel design

Ping Wong, Jan Allebach

Proceedings Volume 3018, (1997) https://doi.org/10.1117/12.271597

KEYWORDS: Diffusion, Halftones, Binary data, Image filtering, Digital filtering, Optical filters, Error analysis, Nonlinear filtering, Iterative methods, Visualization

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Proceedings Article | 15 January 1997 Paper

Multiscale branch-and-bound image database search

Jau-Yuen Chen, Charles Bouman, Jan Allebach

Proceedings Volume 3022, (1997) https://doi.org/10.1117/12.263402

KEYWORDS: Databases, Image retrieval, Image resolution, Detection and tracking algorithms, Multiscale representation, Distance measurement, Image quality, Image storage, Electrical engineering, Feature extraction

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Proceedings Article | 22 April 1996 Paper

Bounds and algorithms for dither screens

Craig Gotsman, Jan Allebach

Proceedings Volume 2657, (1996) https://doi.org/10.1117/12.238746

KEYWORDS: Halftones, Performance modeling, Visualization, Image quality, Digital filtering, Diffusion, Gaussian filters, Binary data, Radon, Image processing

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Proceedings Article | 1 May 1994 Paper

Least-squares model-based video halftoning

Dennis Hilgenberg, Thomas Flohr, Clayton Atkins, Jan Allebach, Charles Bouman

Proceedings Volume 2179, (1994) https://doi.org/10.1117/12.172672

KEYWORDS: Halftones, Visual system, Video, Microelectromechanical systems, Visual process modeling, Contrast sensitivity, Quantization, Visualization, Nanoelectromechanical systems, Model-based design

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Proceedings Article | 1 May 1994 Paper

Model-based color image sequence quantization

Clayton Atkins, Thomas Flohr, Dennis Hilgenberg, Charles Bouman, Jan Allebach

Proceedings Volume 2179, (1994) https://doi.org/10.1117/12.172682

KEYWORDS: Quantization, Contrast sensitivity, Visual system, Diffusion, Visual process modeling, Spatial frequencies, Model-based design, Image quality, Optimal filtering, Image filtering

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Proceedings Article | 15 April 1994 Paper

Optimization of sensor response functions for colorimetry of reflective and emissive objects

Mark Wolski, Jan Allebach, Charles Bouman, Eric Walowit

Proceedings Volume 2170, (1994) https://doi.org/10.1117/12.173851

KEYWORDS: Chemical elements, Reflectivity, Sensors, Light emitting diodes, Optical filters, Transmittance, Tolerancing, Linear filtering, Instrument modeling, Calibration

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SPIE Journal Paper | 1 January 1994

Sequential scalar quantization of color images

Raja Balasubramanian, Charles Bouman, Jan Allebach

JEI, Vol. 3, Issue 01, (January 1994) https://doi.org/10.1117/12.10.1117/12.165065

KEYWORDS: Image enhancement, Visual system, Electronic imaging, Computer programming, Distortion, Binary data, Visualization, RGB color model, Image quality, Quantization

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Proceedings Article | 8 September 1993 Paper

Model-based color image quantization

Thomas Flohr, Bernd Kolpatzik, Raja Balasubramanian, David Carrara, Charles Bouman, Jan Allebach

Proceedings Volume 1913, (1993) https://doi.org/10.1117/12.152701

KEYWORDS: RGB color model, Halftones, Spatial frequencies, Visual process modeling, Visualization, Diffusion, Contrast sensitivity, Data modeling, Eye models, Point spread functions

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Proceedings Article | 27 August 1992 Paper

Model-based halftoning using direct binary search

Mostafa Analoui, Jan Allebach

Proceedings Volume 1666, (1992) https://doi.org/10.1117/12.135959

KEYWORDS: Binary data, Visual process modeling, Halftones, Visualization, Spatial frequencies, Contrast sensitivity, Diffusion, Human vision and color perception, Visual system, Point spread functions

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Proceedings Article | 19 May 1992 Paper

New results in color image quantization

Raja Balasubramanian, Charles Bouman, Jan Allebach

Proceedings Volume 1657, (1992) https://doi.org/10.1117/12.58336

KEYWORDS: Binary data, Quantization, Image processing, Image quality, Visualization, Data storage, Image storage, Composites, RGB color model, Video

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Proceedings Article | 1 June 1991 Paper

New approach to palette selection for color images

Raja Balasubramanian, Jan Allebach

Proceedings Volume 1453, (1991) https://doi.org/10.1117/12.44345

KEYWORDS: Quantization, Visualization, Image quality, Human vision and color perception, Binary data, RGB color model, Image processing, Visual system, Image resolution, Composites

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Proceedings Article | 1 October 1990 Paper

Quantization and multilevel halftoning of color images for near original image quality

Ronald Gentile, Eric Walowit, Jan Allebach

Proceedings Volume 1249, (1990) https://doi.org/10.1117/12.19675

KEYWORDS: RGB color model, Image quality, Quantization, Diffusion, Image processing, Human vision and color perception, Visual process modeling, Electronic imaging, Information technology, Copper

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Proceedings Article | 1 August 1990 Paper

Visually lossless compression of color images

Ronald Gentile, Jan Allebach, Eric Walowit

Proceedings Volume 1258, (1990) https://doi.org/10.1117/12.19963

KEYWORDS: Image compression, Image quality, Visualization, Quantization, Image processing, Computer programming, Visual compression, Data compression, RGB color model, Color difference

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Proceedings Article | 1 May 1990 Paper

Synthesis of diffractive optical bar codes

Steven Bever, Jan Allebach

Proceedings Volume 1211, (1990) https://doi.org/10.1117/12.17926

KEYWORDS: Diffraction, Binary data, Sensors, Holography, Berkelium, Opacity, Fourier transforms, Printing, Reflectivity, Detection and tracking algorithms

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Showing 5 of 146 publications

Proceedings Volume Editor (13)

SPIE Conference Volume | 30 March 2015

Imaging and Multimedia Analytics in a Web and Mobile World 2015

SPIE Conference Volume | 11 March 2014

Measuring, Modeling, and Reproducing Material Appearance

SPIE Conference Volume | 4 March 2014

Imaging and Multimedia Analytics in a Web and Mobile World 2014

SPIE Conference Volume | 29 March 2013

Imaging and Printing in a Web 2.0 World IV

SPIE Conference Volume | 24 February 2012

Imaging and Printing in a Web 2.0 World III

Showing 5 of 13 publications

Conference Committee Involvement (44)

Imaging and Multimedia Analytics in a Web and Mobile World 2015

11 February 2015 | San Francisco, California, United States

Human Vision and Electronic Imaging XX

9 February 2015 | San Francisco, California, United States

Color Imaging XX: Displaying, Processing, Hardcopy, and Applications

9 February 2015 | San Francisco, California, United States

Measuring, Modeling, and Reproducing Material Appearance 2015

9 February 2015 | San Francisco, California, United States

Imaging and Multimedia Analytics in a Web and Mobile World 2014

5 February 2014 | San Francisco, California, United States

Human Vision and Electronic Imaging XIX

3 February 2014 | San Francisco, California, United States

Color Imaging XIX: Displaying, Processing, Hardcopy, and Applications

3 February 2014 | San Francisco, California, United States

Measuring, Modeling, and Reproducing Material Appearance

3 February 2014 | San Francisco, California, United States

Human Vision and Electronic Imaging XVIII

4 February 2013 | Burlingame, California, United States

Color Imaging XVIII: Displaying, Processing, Hardcopy, and Applications

4 February 2013 | Burlingame, California, United States

Imaging and Printing in a Web 2.0 World IV

4 February 2013 | Burlingame, California, United States

Imaging and Printing in a Web 2.0 World III

25 January 2012 | Burlingame, California, United States

Color Imaging XVII: Displaying, Processing, Hardcopy, and Applications

24 January 2012 | Burlingame, California, United States

Human Vision and Electronic Imaging XVII

23 January 2012 | Burlingame, California, United States

Imaging and Printing in a Web 2.0 World II

26 January 2011 | San Francisco Airport, California, United States

Color Imaging XVI: Displaying, Processing, Hardcopy, and Applications

24 January 2011 | San Francisco Airport, California, United States

Human Vision and Electronic Imaging XVI

24 January 2011 | San Francisco Airport, California, United States

Color Imaging XV: Displaying, Processing, Hardcopy, and Applications

19 January 2010 | San Jose, California, United States

Human Vision and Electronic Imaging XV

18 January 2010 | San Jose, California, United States

IS&T/SPIE Electronic Imaging

17 January 2010 | San Jose, United States

Color Imaging XIV: Displaying, Hardcopy, Processing, and Applications

20 January 2009 | San Jose, California, United States

Human Vision and Electronic Imaging XIV

19 January 2009 | San Jose, California, United States

IS&T/SPIE Electronic Imaging

18 January 2009 | San Jose, United States

Color Imaging XIII: Processing, Hardcopy, and Applications

29 January 2008 | San Jose, California, United States

Human Vision and Electronic Imaging XIII

28 January 2008 | San Jose, California, United States

Document Recognition and Retrieval XIV

30 January 2007 | San Jose, CA, United States

Color Imaging XII: Processing, Hardcopy, and Applications

30 January 2007 | San Jose, CA, United States

Human Vision and Electronic Imaging XII

29 January 2007 | San Jose, CA, United States

Color Imaging XI: Processing, Hardcopy, and Applications

17 January 2006 | San Jose, California, United States

Human Vision and Electronic Imaging XI

16 January 2006 | San Jose, California, United States

Digital Publishing

16 January 2006 | San Jose, California, United States

Human Vision and Electronic Imaging X

17 January 2005 | San Jose, California, United States

Color Imaging X: Processing, Hardcopy, and Applications

17 January 2005 | San Jose, California, United States

Color Imaging IX: Processing, Hardcopy, and Applications IX

20 January 2004 | San Jose, California, United States

Human Vision and Electronic Imaging IX

19 January 2004 | San Jose, California, United States

Human Vision and Electronic Imaging VIII

21 January 2003 | Santa Clara, CA, United States

Color Imaging VIII: Processing, Hardcopy, and Applications

21 January 2003 | Santa Clara, CA, United States

Electronic Imaging '99

23 January 1999 | San Jose, United States

Human Vision and Electronic Imaging

29 January 1996 | San Jose, CA, United States

Human Vision, Visual Processing, and Digital Display VI

6 February 1995 | San Jose, CA, United States

Human Vision, Visual Processing, and Digital Display V

8 February 1994 | San Jose, CA, United States

Human Vision, Visual Processing, and Digital Display IV

1 February 1993 | San Jose, CA, United States

Human Vision, Visual Processing, and Digital Display II

27 February 1991 | San Jose, CA, United States

Human Vision and Electronic Imaging: Models, Methods, and Applications

12 February 1990 | Santa Clara, CA, United States

Showing 5 of 44 Conference Committees

Course Instructor

SC515: Advanced Concepts in Digital Halftoning

This course provides an in-depth look at advanced concepts of digital halftoning. Monochrome and color models for the rendering device and human visual system are presented, and model-based, iterative approaches to digital halftoning and application to model-based monochrome and color halftoning are discussed.

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SC514: Introduction to Digital Halftoning

This course provides an introduction to the fundamental concepts of digital halftoning with an overview of the most successful digital halftoning algorithms. We discuss basic aspects of printer modeling and color as they pertain to digital halftoning, compression, watermarking, and descreening of digital halftones.

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SC680: Introduction to Digital Halftoning

This course will provide an introduction to the fundamental concepts of digital halftoning. Overview of the most successful digital halftoning algorithms will be given. We will discuss basic aspects of printer modeling and color as they pertain to digital halftoning, compression, watermarking, and descreening of digital halftones.

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