Prof. Sherif S. Sherif Profile

Prof. Sherif S. Sherif

Associate Professor at Univ of Manitoba

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Author

Publications (35)

Proceedings Article | 12 September 2021 Poster + Paper

Robust anomaly detection algorithm for hyperspectral images using spectral unmixing

Ahmed Elrewainy, Sherif Sherif

Proceedings Volume 11862, 1186213 (2021) https://doi.org/10.1117/12.2600335

KEYWORDS: Detection and tracking algorithms, Edge detection, Hyperspectral imaging, Sensors, Target detection, Hyperspectral target detection, Binary data, Visualization, Statistical analysis, Principal component analysis

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Proceedings Article | 9 October 2018 Presentation + Paper

Unsupervised sparsity-based unmixing of hyperspectral imaging data using an online sparse coding dictionary

Ahmed Elrewainy, Sherif Sherif

Proceedings Volume 10789, 107890G (2018) https://doi.org/10.1117/12.2326694

KEYWORDS: Hyperspectral imaging, Signal processing, Image processing

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Proceedings Article | 5 March 2018 Paper

Increasing signal-to-noise ratio of swept-source optical coherence tomography by oversampling in k-space

Karim Nagib, Biniyam Mezgebo, Rahul Thakur, Namal Fernando, Behzad Kordi, Sherif Sherif

Proceedings Volume 10591, 105910R (2018) https://doi.org/10.1117/12.2283015

KEYWORDS: Signal to noise ratio, Optical coherence tomography, Denoising, Reconstruction algorithms, Interference (communication), Fourier transforms, Imaging systems, Computer engineering, Computing systems, Image processing

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Proceedings Article | 5 March 2018 Paper

Fast detection of vascular plaque in optical coherence tomography images using a reduced feature set

Ammu Prakash, Mariano Ocana Macias, Mark Hewko, Michael Sowa, Sherif Sherif

Proceedings Volume 10591, 105910P (2018) https://doi.org/10.1117/12.2283017

KEYWORDS: Optical coherence tomography, Tissue optics, Image segmentation, Genetic algorithms, Optimization (mathematics), Feature selection

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Proceedings Article | 5 March 2018 Paper

Swept source optical coherence tomography of objects with arbitrary reflectivity profiles

Biniyam Mezgebo, Karim Nagib, Namal Fernando, Behzad Kordi, Sherif Sherif

Proceedings Volume 10591, 105910N (2018) https://doi.org/10.1117/12.2283016

KEYWORDS: Reflectivity, Optical coherence tomography, Scattering, Light scattering, Fourier transforms, Image quality

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Proceedings Article | 14 February 2018 Paper

Scaled nonuniform Fourier transform for image reconstruction in swept source optical coherence tomography

Biniyam Mezgebo, Karim Nagib, Namal Fernando, Behzad Kordi, Sherif Sherif

Proceedings Volume 10483, 104832S (2018) https://doi.org/10.1117/12.2292163

KEYWORDS: Fourier transforms, Image restoration, Optical coherence tomography, Light, Laser sources, Interferometers, Sensors, Clocks, Nonuniform sampling, Optical testing

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Proceedings Article | 25 September 2014 Paper

Accelerated simulation of optical coherence tomography of objects with arbitrary spatial distributions

Mauricio Escobar I., Siavash Malektaji, Ivan Lima, Sherif Sherif

Proceedings Volume 9288, 928818 (2014) https://doi.org/10.1117/12.2083797

KEYWORDS: Optical coherence tomography, Monte Carlo methods, Computer simulations, Optical spheres, Computer programming, Optical simulations, Computer architecture, Absorption, Scattering, Graphics processing units

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SPIE Journal Paper | 2 April 2014 Open Access

Monte Carlo simulation of optical coherence tomography for turbid media with arbitrary spatial distributions

Siavash Malektaji, Ivan Lima, Sherif Sherif

JBO, Vol. 19, Issue 04, 046001, (April 2014) https://doi.org/10.1117/12.10.1117/1.JBO.19.4.046001

KEYWORDS: Monte Carlo methods, Optical coherence tomography, Photons, Computer simulations, Scattering, FDA class I medical device development, Multilayers, Reflectivity, FDA class II medical device development, Optical spheres

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Proceedings Article | 18 June 2013 Paper

Texture based segmentation method to detect atherosclerotic plaque from optical tomography images

Ammu Prakash, Mark Hewko, Michael Sowa, Sherif Sherif

Proceedings Volume 8802, 88020S (2013) https://doi.org/10.1117/12.2032197

KEYWORDS: Image segmentation, Optical coherence tomography, Photography, Tissue optics, Tissues, Optical tomography, Coherence imaging, Vascular diseases, Arteries, Intravascular ultrasound

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Proceedings Article | 24 October 2012 Paper

Detection of atherosclerotic vascular tissue from optical coherence tomography images

Ammu Prakash, Mark Hewko, Mike Sowa, Sherif Sherif

Proceedings Volume 8412, 841204 (2012) https://doi.org/10.1117/12.981916

KEYWORDS: Optical coherence tomography, Arteries, Tissues, Feature extraction, Feature selection, Tissue optics, Sensors, Statistical analysis, Image classification, Optical inspection

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Proceedings Article | 24 October 2012 Paper

Maximization of signal-to-noise ratio in optical coherence tomography using a depth-dependent matched filter

Ameneh Boroomand, Michael S. Smith, Dan Popescu, Michael Sowa, Sherif Sherif

Proceedings Volume 8412, 841202 (2012) https://doi.org/10.1117/12.2001691

KEYWORDS: Signal to noise ratio, Optical coherence tomography, Electronic filtering, Interference (communication), Filtering (signal processing), Digital filtering, Image filtering, Tissues, Optical filters, Statistical analysis

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Proceedings Article | 24 October 2012 Paper

Simulation of the interaction of light and tissue in a large volume using a Markov chain Monte Carlo method

Pedro Pereira, Sherif Sherif

Proceedings Volume 8412, 841218 (2012) https://doi.org/10.1117/12.2001455

KEYWORDS: Monte Carlo methods, Tissue optics, Error analysis, Light scattering, Scattering, Statistical analysis, Numerical simulations, Optical imaging, Biomedical optics, Imaging systems

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Proceedings Article | 23 February 2012 Paper

Design of an optimum ultrasound pattern to minimize multiple-scattered light reflected from inhomogeneous tissue

Pedro Pereira, Sherif Sherif

Proceedings Volume 8223, 82233R (2012) https://doi.org/10.1117/12.909368

KEYWORDS: Ultrasonography, Refractive index, Tissues, Imaging systems, Optical coherence tomography, Tissue optics, Computational imaging, Computing systems, Light scattering, Scattering

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Proceedings Article | 9 February 2012 Paper

Fast computation of diffuse reflectance in optical coherence tomography using an importance sampling-based Monte Carlo method

Ivan Lima, Anshul Kalra, Hugo Hernández-Figueroa, Sherif Sherif

Proceedings Volume 8221, 82210Y (2012) https://doi.org/10.1117/12.909498

KEYWORDS: Monte Carlo methods, Optical coherence tomography, Diffuse reflectance spectroscopy, Scattering, Photons, Tissue optics, Computing systems, Tissues, Computer simulations, Anisotropy

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Proceedings Article | 16 September 2010 Paper

Fast simulation of all orders of multiple-scattered light in swept source optical coherence tomography

Aladin Kasem, Colin Gilmore, Joe LoVetri, Stephen Pistorius, Sherif Sherif

Proceedings Volume 7750, 77500B (2010) https://doi.org/10.1117/12.881067

KEYWORDS: Optical coherence tomography, Light, Laser sources, Current controlled current source, Sensors, Multiple scattering, Light scattering, Numerical simulations

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Proceedings Article | 20 May 2010 Paper

Pupil masks for 2-D intensity synthesis in a high numerical aperture focusing system

Leelada Rattanavija, Sherif Sherif, Waleed Mohammed

Proceedings Volume 7743, 77430N (2010) https://doi.org/10.1117/12.863847

KEYWORDS: Diffraction, Electromagnetism, Microscopy, Polarization, Apodization, Image quality, Optical microscopes, Objectives, Optical coherence tomography, Bessel functions

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Proceedings Article | 20 May 2010 Paper

Dispersion compensation for optical coherence tomography

Ranida Wongpiya, Waleed Mohammed, Sherif Sherif

Proceedings Volume 7743, 77430M (2010) https://doi.org/10.1117/12.863546

KEYWORDS: Optical coherence tomography, Wigner distribution functions, Signal detection, Dispersion, Electronic filtering, Light sources, Biomedical optics, Image resolution, Point spread functions, Optical tomography

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Proceedings Article | 20 February 2010 Paper

Signal processing with unequally spaced data in Fourier-domain optical coherence tomography

Sébastien Vergnole, Daniel Lévesque, Sherif Sherif, Guy Lamouche

Proceedings Volume 7554, 75542W (2010) https://doi.org/10.1117/12.842402

KEYWORDS: Optical coherence tomography, Signal processing, Point spread functions, Fourier transforms, Convolution, Image quality, Image processing, Astronomical imaging, Computing systems, Data processing

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Proceedings Article | 5 August 2009 Paper

Swept-source full-field optical coherence microscopy

Shoude Chang, Sherif Sherif, Youxin Mao, Costel Flueraru

Proceedings Volume 7386, 738604 (2009) https://doi.org/10.1117/12.838213

KEYWORDS: Optical coherence tomography, Mirrors, Image resolution, Imaging systems, Microscopes, Optical coherence microscopy, Signal to noise ratio, Tissue optics, Field programmable gate arrays, Interferometers

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Proceedings Article | 27 January 2009 Paper

Optical coherence tomography: technology and applications

Shoude Chang, Youxin Mao, Costel Flueraru, Sherif Sherif

Proceedings Volume 7156, 715606 (2009) https://doi.org/10.1117/12.806813

KEYWORDS: Optical coherence tomography, Tomography, Light sources, Tissues, Imaging systems, Interferometers, Cameras, Image resolution, Mirrors, Fourier transforms

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Proceedings Article | 12 August 2008 Paper

Fiber probes used in optical coherence tomography

Youxin Mao, Shoude Chang, Sherif Sherif, Costel Flueraru

Proceedings Volume 7099, 70990A (2008) https://doi.org/10.1117/12.807442

KEYWORDS: GRIN lenses, Optical coherence tomography, In vivo imaging, Tissue optics, Lenses, Doppler tomography, Imaging systems, Zemax, Biomedical optics, Tissues

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Proceedings Article | 12 August 2008 Paper

3x3 MZI with unbalanced differential detection for full range swept-source optical coherence tomography

Youxin Mao, Costel Flueraru, Sherif Sherif, Shoude Chang

Proceedings Volume 7099, 709909 (2008) https://doi.org/10.1117/12.807440

KEYWORDS: Optical coherence tomography, Interferometry, Signal detection, Sensors, Fiber couplers, Interferometers, Mach-Zehnder interferometers, Signal to noise ratio, Signal attenuation, Phase shifts

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Proceedings Article | 8 January 2008 Paper

Design and implementation of fiber lenses for ultra-small probes used in biomedical imaging

Youxin Mao, Shoude Chang, Sherif Sherif, Costel Flueraru

Proceedings Volume 6826, 68261A (2008) https://doi.org/10.1117/12.754725

KEYWORDS: GRIN lenses, Optical coherence tomography, Biomedical optics, Lenses, Imaging systems, In vivo imaging, Tissue optics, Doppler tomography, Tissues, Zemax

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Proceedings Article | 26 October 2007 Paper

Optical coherence tomography used for internal biometrics

Shoude Chang, Sherif Sherif, Youxin Mao, Costel Flueraru

Proceedings Volume 6796, 67962C (2007) https://doi.org/10.1117/12.778910

KEYWORDS: Optical coherence tomography, Biometrics, Iris recognition, Skin, Fingerprint recognition, Security technologies, 3D image processing, Information security, Spectroscopy, Tissue optics

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Proceedings Article | 26 October 2007 Paper

Sensitivity investigation of instantaneous complex conjugate resolved swept-source OCT using a Mach-Zehnder interferometer with a 3x3 fiber coupler

Youxin Mao, Costel Flueraru, Sherif Sherif, Shoude Chang, E. Murdock

Proceedings Volume 6796, 67960F (2007) https://doi.org/10.1117/12.778058

KEYWORDS: Optical coherence tomography, Signal detection, Interferometry, Fiber couplers, Mach-Zehnder interferometers, Signal to noise ratio, Sensors, Optical fibers, Interference (communication), Interferometers

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Proceedings Article | 26 October 2007 Paper

Large area full-field optical coherence tomography using white light source

Shoude Chang, Youxin Mao, Sherif Sherif, Costel Flueraru

Proceedings Volume 6796, 67961F (2007) https://doi.org/10.1117/12.778741

KEYWORDS: Optical coherence tomography, Light sources, Halogens, Tomography, Imaging systems, Lamps, Stereoscopy, 3D image processing, Interferometers, 3D metrology

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Proceedings Article | 26 October 2007 Paper

Numerical dispersion compensation for optical coherence tomography in the Wigner domain

Sherif Sherif, Kalon Huff, Wahab Almuhtadi, Costel Flueraru, Youxin Mao, Shoude Chang

Proceedings Volume 6796, 67960G (2007) https://doi.org/10.1117/12.778060

KEYWORDS: Optical coherence tomography, Wigner distribution functions, Dispersion, Interferometers, Deconvolution, Tissue optics, Interfaces, Optical resolution, Electronic filtering, Time-frequency analysis

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Proceedings Article | 11 July 2007 Paper

Maximum likelihood estimation of depth reflectance in time-domain optical coherence tomography

Sherif Sherif, Costel Flueraru, Youxin Mao, Shoude Chang

Proceedings Volume 6627, 66270S (2007) https://doi.org/10.1117/12.728024

KEYWORDS: Optical coherence tomography, Reflectivity, Sensors, Process modeling, Image restoration, Coherence (optics), Biomedical optics, Thermal effects, Computer simulations, Refractive index

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Proceedings Article | 28 September 2006 Paper

Full-field optical coherence tomography used for security and document identity

Shoude Chang, Youxin Mao, Sherif Sherif, Costel Flueraru

Proceedings Volume 6402, 64020Q (2006) https://doi.org/10.1117/12.692733

KEYWORDS: Optical coherence tomography, Tomography, Information security, Cameras, Imaging systems, Light sources, 3D image processing, Skin, Image resolution, Biometrics

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Proceedings Article | 8 September 2006 Paper

Statistics of A-scan photocurrent in time-domain optical coherence tomography

Sherif Sherif, Shoude Chang, Costel Flueraru

Proceedings Volume 6343, 63430F (2006) https://doi.org/10.1117/12.707492

KEYWORDS: Optical coherence tomography, Reflectivity, Photodetectors, Error analysis, Statistical modeling, Tissue optics, Sensors, Biological research, Natural surfaces, Spatial resolution

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Proceedings Article | 8 September 2006 Paper

Novel quadrature interferometric platform with application in optical coherence tomography

C. Flueraru, H. Kumazaki, S. Sherif, S. Chang

Proceedings Volume 6343, 63430G (2006) https://doi.org/10.1117/12.707493

KEYWORDS: Interferometry, Phase shifts, Optical coherence tomography, Interferometers, Mirrors, Sensors, Signal detection, Scattering, Light sources, 3D image processing

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Proceedings Article | 8 September 2006 Paper

Large area full-field optical coherence tomography

Shoude Chang, Sherif Sherif, Costel Flueraru

Proceedings Volume 6343, 634302 (2006) https://doi.org/10.1117/12.706543

KEYWORDS: Optical coherence tomography, Tomography, Imaging systems, Cameras, Stereoscopy, Image segmentation, Image resolution, Light sources, 3D image processing, Interferometers

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Proceedings Article | 7 October 2005 Paper

Instantaneous signal-to-noise ratio of time-domain optical coherence tomography

Sherif Sherif, Carla Rosa, Adrian Podoleanu

Proceedings Volume 5861, 58611C (2005) https://doi.org/10.1117/12.643852

KEYWORDS: Signal to noise ratio, Optical coherence tomography, Electronic filtering, Signal processing, Light, Sensors, Statistical modeling, Imaging systems, Photodetectors, Interference (communication)

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Proceedings Article | 1 September 2004 Paper

Use of a priori object knowledge to achieve super-resolution in optical data storage imaging applications

Sherif Sherif, Peter Torok

Proceedings Volume 5456, (2004) https://doi.org/10.1117/12.545885

KEYWORDS: Super resolution, Imaging systems, Binary data, Optical storage, Optical imaging, Digital image processing, Signal processing, Algorithms, Image restoration, Point spread functions

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Proceedings Article | 13 November 2001 Paper

Logarithmic phase filter to extend the depth of field of incoherent hybrid imaging systems

Sherif Sherif, Edward Dowski, W. Thomas Cathey

Proceedings Volume 4471, (2001) https://doi.org/10.1117/12.449345

KEYWORDS: Imaging systems, Image filtering, Point spread functions, Optical filters, Modulation transfer functions, Focus stacking, Image processing, Digital filtering, Image resolution, Spatial frequencies

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Showing 5 of 35 publications

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