Prof. Masayuki Tanaka Profile

Prof. Masayuki Tanaka

Senior Researcher at National Institute of Advanced Industrial Science and Technology

SPIE Involvement:

Author

Publications (21)

SPIE Journal Paper | 5 October 2023

Deformable element-wise dynamic convolution

Wonjik Kim, Masayuki Tanaka, Yoko Sasaki, Masatoshi Okutomi

JEI, Vol. 32, Issue 05, 053029, (October 2023) https://doi.org/10.1117/12.10.1117/1.JEI.32.5.053029

KEYWORDS: Convolution, Deformation, Education and training, Image segmentation, Object detection, Image classification, Semantics, Pose estimation, Feature extraction, Network architectures

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SPIE Journal Paper | 7 February 2023 Open Access

Multi-modal pedestrian detection with misalignment based on modal-wise regression and multi-modal IoU

Napat Wanchaitanawong, Masayuki Tanaka, Takashi Shibata, Masatoshi Okutomi

JEI, Vol. 32, Issue 01, 013025, (February 2023) https://doi.org/10.1117/12.10.1117/1.JEI.32.1.013025

KEYWORDS: Object detection, Magnetic resonance imaging, Education and training, Thermography, Computer simulations, Performance modeling, Ablation, Network architectures, Light sources and illumination, Fourier transforms

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SPIE Journal Paper | 30 April 2021

Gradient-domain image reconstruction framework using chroma-preserving intensity-range and base-structure constraints

Takashi Shibata, Masayuki Tanaka, Masatoshi Okutomi

JEI, Vol. 30, Issue 02, 023032, (April 2021) https://doi.org/10.1117/12.10.1117/1.JEI.30.2.023032

KEYWORDS: Image restoration, RGB color model, High dynamic range imaging, Image enhancement, Detection and tracking algorithms, Deconvolution, Colorimetry, Image filtering, Image processing, Reconstruction algorithms

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SPIE Journal Paper | 4 June 2020

Tunable color correction for noisy images

Ryo Yamakabe, Yusuke Monno, Masayuki Tanaka, Masatoshi Okutomi

JEI, Vol. 29, Issue 03, 033012, (June 2020) https://doi.org/10.1117/12.10.1117/1.JEI.29.3.033012

KEYWORDS: RGB color model, Cameras, Roentgenium, Interference (communication), Transform theory, Space operations, Sensors, Hyperspectral imaging, Statistical modeling, Optical filters

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SPIE Journal Paper | 11 June 2019

Full thermal panorama from a long wavelength infrared and visible camera system

Thapanapong Rukkanchanunt, Masayuki Tanaka, Masatoshi Okutomi

JEI, Vol. 28, Issue 03, 033028, (June 2019) https://doi.org/10.1117/12.10.1117/1.JEI.28.3.033028

KEYWORDS: Panoramic photography, Cameras, Imaging systems, Thermography, Long wavelength infrared, Visible radiation, Thermal modeling, Image resolution, Calibration, Infrared cameras

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Proceedings Article | 6 October 2017 Paper

Image enhancement framework for low-resolution thermal images in visible and LWIR camera systems

Thapanapong Rukkanchanunt, Masayuki Tanaka, Masatoshi Okutomi

Proceedings Volume 10438, 1043809 (2017) https://doi.org/10.1117/12.2277393

KEYWORDS: Image enhancement, Long wavelength infrared, Cameras, Thermography, Infrared cameras, Infrared imaging, Imaging systems, Infrared radiation, Calibration, Super resolution

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Infrared (IR) thermography camera became an essential tool for monitoring applications such as pedestrian detection and equipment monitoring. Most commonly used IR cameras are Long Wavelength Infrared (LWIR) cameras due to their suitable wavelength for environmental temperature. Even though the cost of LWIR cameras had been on a decline, the affordable ones only provided low-resolution images. Enhancement techniques that could be applied to visible images often failed to perform correctly on low-resolution LWIR images. Many attempts on thermal image enhancement had been on high-resolution images. Stereo calibration between visible cameras and LWIR cameras had recently been improved in term of accuracy and ease of use. Recent visible cameras and LWIR cameras are bundled into one device, giving the capability of simultaneously taking visible and LWIR images. However, few works take advantage of this camera systems. In this work, image enhancement framework for visible and LWIR camera systems is proposed. The proposed framework consists of two inter-connected modules: visible image enhancement module and LWIR image enhancement module. The enhancement technique that will be experimented is image stitching which serves two purposes: view expansion and super-resolution. The visible image enhancement module follows a regular workflow for image stitching. The intermediate results such as homography and seam carvings labels are passed to LWIR image enhancement module. The LWIR image enhancement module aligns LWIR images to visible images using stereo calibrations results and utilizes already computed homography from visible images to avoid feature extraction and matching on LWIR images. The framework is able to handle difference in image resolution between visible images and LWIR images by performing sparse pixel-to-pixel version of image alignment and image projection. Experiments show that the proposed framework leads to richer image stitching's results comparing to the results from an existing commercial software.

Proceedings Article | 5 May 2017 Presentation + Paper

Coaxial visible and FIR camera system with accurate geometric calibration

Yuka Ogino, Takashi Shibata, Masayuki Tanaka, Masatoshi Okutomi

Proceedings Volume 10214, 1021415 (2017) https://doi.org/10.1117/12.2261271

KEYWORDS: Cameras, Calibration, Imaging systems, Image fusion, Night vision, Flame detectors, Gold, Visible radiation, Detection and tracking algorithms, Precision calibration, Far infrared, Fiber optic gyroscopes, Silicon, Beam splitters

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Proceedings Article | 3 May 2017 Presentation + Paper

LWIR image visualization preserving local details and global distribution by gradient-domain image reconstruction

Takashi Shibata, Masayuki Tanaka, Masatoshi Okutomi

Proceedings Volume 10178, 101780X (2017) https://doi.org/10.1117/12.2261266

KEYWORDS: Long wavelength infrared, Image restoration, Image visualization, Visualization, Image fusion, Image enhancement, High dynamic range imaging, Infrared imaging, Infrared radiation, Transform theory

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Proceedings Article | 1 May 2017 Presentation + Paper

Unified optimization framework for L2, L1, and/or L0 constrained image reconstruction

Masayuki Tanaka, Masatoshi Okutomi

Proceedings Volume 10222, 102220J (2017) https://doi.org/10.1117/12.2257957

KEYWORDS: Image restoration, Computational imaging, Optimization (mathematics), Algorithm development, Image quality, Image processing, Reconstruction algorithms, Fourier transforms, Image filtering, Image enhancement, Convolution, Deconvolution, MATLAB

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SPIE Journal Paper | 26 January 2016

Versatile visible and near-infrared image fusion based on high visibility area selection

Takashi Shibata, Masayuki Tanaka, Masatoshi Okutomi

JEI, Vol. 25, Issue 01, 013016, (January 2016) https://doi.org/10.1117/12.10.1117/1.JEI.25.1.013016

KEYWORDS: Near infrared, Image fusion, Image enhancement, Visibility, Air contamination, Image quality, Denoising, Fusion energy, Magnetorheological finishing, Machine learning

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Proceedings Article | 27 February 2015 Paper

Visible and near-infrared image fusion based on visually salient area selection

Takashi Shibata, Masayuki Tanaka, Masatoshi Okutomi

Proceedings Volume 9404, 94040G (2015) https://doi.org/10.1117/12.2077050

KEYWORDS: Image fusion, Near infrared, Image enhancement, Visualization, Denoising, Image processing, Air contamination, Visible radiation, Image denoising, Infrared sensors

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Proceedings Article | 7 March 2014 Paper

Minimized-Laplacian residual interpolation for color image demosaicking

Daisuke Kiku, Yusuke Monno, Masayuki Tanaka, Masatoshi Okutomi

Proceedings Volume 9023, 90230L (2014) https://doi.org/10.1117/12.2038425

KEYWORDS: Color difference, Image processing, Algorithm development, Image acquisition, Visualization, Image interpolation, Color imaging, Digital cameras, Cameras, RGB color model

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Proceedings Article | 7 March 2014 Paper

Simultaneous capturing of RGB and additional band images using hybrid color filter array

Daisuke Kiku, Yusuke Monno, Masayuki Tanaka, Masatoshi Okutomi

Proceedings Volume 9023, 90230V (2014) https://doi.org/10.1117/12.2039396

KEYWORDS: RGB color model, Near infrared, Optical filters, Color difference, Image filtering, Lutetium, Image quality, Cameras, Algorithm development, Linear filtering

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Proceedings Article | 7 March 2014 Paper

A classification-and-reconstruction approach for a single image super-resolution by a sparse representation

YingYing Fan, Masayuki Tanaka, Masatoshi Okutomi

Proceedings Volume 9023, 902312 (2014) https://doi.org/10.1117/12.2038826

KEYWORDS: Associative arrays, Super resolution, Databases, Image processing, Denoising, Image fusion, Image restoration, Data modeling, Image classification, Sensors

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Proceedings Article | 4 February 2013 Paper

Across-resolution adaptive dictionary learning for single-image super-resolution

Masayuki Tanaka, Ayumu Sakurai, Masatoshi Okutomi

Proceedings Volume 8660, 866007 (2013) https://doi.org/10.1117/12.2002393

KEYWORDS: Associative arrays, Super resolution, Databases, Image resolution, Reconstruction algorithms, Visualization, Image segmentation, Image restoration, Image denoising, Inverse problems

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Proceedings Article | 4 February 2013 Paper

Direct spatio-spectral datacube reconstruction from raw data using a spatially adaptive spatio-spectral basis

Yusuke Monno, Masayuki Tanaka, Masatoshi Okutomi

Proceedings Volume 8660, 866003 (2013) https://doi.org/10.1117/12.2002292

KEYWORDS: Reflectivity, Principal component analysis, Multispectral imaging, Image sensors, Image filtering, Imaging systems, Optical filters, Machine vision, Computer vision technology, RGB color model

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Proceedings Article | 24 January 2012 Paper

Multispectral demosaicking using guided filter

Yusuke Monno, Masayuki Tanaka, Masatoshi Okutomi

Proceedings Volume 8299, 82990O (2012) https://doi.org/10.1117/12.906168

KEYWORDS: Image filtering, Optical filters, Multispectral imaging, RGB color model, Cameras, Imaging systems, Visualization, Linear filtering, Machine vision, Computer vision technology

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Proceedings Article | 26 January 2010 Paper

Latent common origin of bilateral filter and non-local means filter

Masayuki Tanaka, Masatoshi Okutomi

Proceedings Volume 7532, 753202 (2010) https://doi.org/10.1117/12.838772

KEYWORDS: Nonlinear filtering, Digital filtering, Bayesian inference, Gaussian filters, Image filtering, Visual process modeling, Image processing, Image analysis, Interference (communication), Algorithm development

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Proceedings Article | 28 January 2008 Paper

A raw data compression for digital cameras with a color filter array

Masayuki Tanaka, Masatoshi Okutomi

Proceedings Volume 6807, 68070R (2008) https://doi.org/10.1117/12.759820

KEYWORDS: Image compression, Data compression, Super resolution, Quantization, Image sensors, Optical filters, Image processing, Computer programming, Digital cameras, Cameras

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Proceedings Article | 2 February 2006 Paper

A fast MAP-based super-resolution algorithm for general motion

Masayuki Tanaka, Masatoshi Okutomi

Proceedings Volume 6065, 60651B (2006) https://doi.org/10.1117/12.642152

KEYWORDS: Super resolution, Point spread functions, Optimization (mathematics), Fourier transforms, Reconstruction algorithms, Image processing, Algorithm development, Cameras, Convolution, Image resolution

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Proceedings Article | 19 August 1998 Paper

Retrieval of cloud physical parameters from ground based observations of microwave atmospheric radiation and transmitted solar radiation

Haruma Ishida, Tadahiro Hayasaka, Masayuki Tanaka

Proceedings Volume 3503, (1998) https://doi.org/10.1117/12.319493

KEYWORDS: Clouds, Liquids, Microwave radiation, Temperature metrology, Water, Radiometry, Solar radiation, Particles, Infrared radiation, Absorption

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Showing 5 of 21 publications

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