Prof. Toshiaki Fujii Profile

Prof. Toshiaki Fujii

Professor at Nagoya Univ Graduate School of Engineering

SPIE Involvement:

Author

Publications (24)

Proceedings Article | 2 May 2024 Paper

Unsupervised framerate upsampling from events

Hiroyuki Okuno, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii

Proceedings Volume 13164, 131641M (2024) https://doi.org/10.1117/12.3018663

KEYWORDS: Video, Cameras, Education and training, Visualization, Interpolation, Biosensing, Biomimetics, Signal to noise ratio, Modeling, Machine learning

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Proceedings Article | 2 May 2024 Paper

Toward neural light-field compression

Yuya Ishikawa, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii

Proceedings Volume 13164, 131641Z (2024) https://doi.org/10.1117/12.3018716

KEYWORDS: Education and training, Quantization, Network architectures, Data compression, Video coding, Neural networks, Visualization, Image compression, 3D acquisition, Video

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Proceedings Article | 13 March 2021 Paper

Learning to synthesize dense focal stack and all-in-focus image from sparse focal stack

Fumitaka Tateiwa, Keita Takahashi, Toshiaki Fujii

Proceedings Volume 11766, 117660J (2021) https://doi.org/10.1117/12.2590813

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Proceedings Article | 13 March 2021 Paper

Comparing pixel predictors for lossless image coding

Aki Kunieda, Keita Takahashi, Toshiaki Fujii

Proceedings Volume 11766, 1176602 (2021) https://doi.org/10.1117/12.2590838

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Proceedings Article | 6 September 2019 Paper

Rendering-dependent compression and quality evaluation for light field contents

Irene Viola, Keita Takahashi, Toshiaki Fujii, Touradj Ebrahimi

Proceedings Volume 11137, 111371I (2019) https://doi.org/10.1117/12.2530198

KEYWORDS: Visualization, Prototyping, Signal to noise ratio, Visual compression, Image compression, Computer programming, Statistical analysis, Visual analytics

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Proceedings Article | 14 May 2019 Presentation + Paper

3D image processing using deep neural network

Toshiaki Fujii

Proceedings Volume 10997, 1099703 (2019) https://doi.org/10.1117/12.2523171

KEYWORDS: Cameras, 3D image processing, Coded apertures, Spatial resolution, Neural networks, Image processing, Transmittance, 3D displays, Convolutional neural networks, 3D acquisition

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Proceedings Article | 27 March 2019 Paper

Extracting multi-view images from multi-focused plenoptic camera

Shu Fujita, Sho Mikawa, Mehrdad Panahpourtehrani, Keita Takahashi, Toshiaki Fujii

Proceedings Volume 11050, 1105006 (2019) https://doi.org/10.1117/12.2521355

KEYWORDS: Cameras, Microlens, Image processing, Microlens array, Visualization, 3D image processing, Reliability, 3D displays, Computer graphics, Machine vision

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Proceedings Article | 22 March 2019 Paper

Separating information for space-time hybrid code

Tomohiro Hidaka, Keita Takahashi, Toshiaki Fujii

Proceedings Volume 11049, 110492Q (2019) https://doi.org/10.1117/12.2521485

KEYWORDS: Cameras, Projection systems, Speckle pattern, RGB color model, Phase shifting, Reflection, Speckle, Fringe analysis

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Proceedings Article | 22 March 2019 Paper

Multi-view image coding using disparity-compensated and weighted binary patterns

Koji Komatsu, Keita Takahashi, Toshiaki Fujii

Proceedings Volume 11049, 1104930 (2019) https://doi.org/10.1117/12.2521374

KEYWORDS: Binary data, Image compression, Video, 3D video compression, Video compression, Visualization, Image quality, Video coding, Cameras, 3D displays

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Proceedings Article | 22 March 2019 Paper

Generating arbitrarily focused images from sparse focal stack through light field reconstruction

Daiki Ito, Keita Takahashi, Toshiaki Fujii

Proceedings Volume 11049, 110493E (2019) https://doi.org/10.1117/12.2521486

KEYWORDS: Cameras, Image stacking, Diamond, Control systems, Photography, Aluminum, Zoom lenses, Human-machine interfaces

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SPIE Journal Paper | 28 February 2018 Open Access

Using high-resolution binary layers and a low-resolution multibit backlight for a layered light-field display

Yuto Kobayashi, Keita Takahashi, Toshiaki Fujii

OE, Vol. 57, Issue 06, 061607, (February 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.6.061607

KEYWORDS: Binary data, Image resolution, Spatial frequencies, Transmittance, Spatial resolution, Optical engineering, LCDs, 3D displays, Optical resolution, Image quality

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Proceedings Article | 17 March 2015 Paper

Data conversion from multi-view cameras to layered light field display for aliasing-free 3D visualization

Toyohiro Saito, Keita Takahashi, Mehrdad Tehrani, Toshiaki Fujii

Proceedings Volume 9391, 939111 (2015) https://doi.org/10.1117/12.2078083

KEYWORDS: 3D displays, Photography, Cameras, Transmittance, Data conversion, Visualization, 3D visualizations, Computer graphics, Computer simulations, 3D image processing

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Proceedings Article | 17 March 2015 Paper

A practical implementation of free viewpoint video system for soccer games

Ryo Suenaga, Kazuyoshi Suzuki, Tomoyuki Tezuka, Mehrdad Panahpour Tehrani, Keita Takahashi, Toshiaki Fujii

Proceedings Volume 9393, 93930G (2015) https://doi.org/10.1117/12.2077524

KEYWORDS: Cameras, Video, 3D modeling, 3D image processing, Model-based design, Calibration, Image processing, Visualization, 3D image reconstruction, OpenGL

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Proceedings Article | 17 March 2015 Paper

Free-viewpoint video synthesis from mixed resolution multi-view images and low resolution depth maps

Takaaki Emori, Mehrdad Tehrani, Keita Takahashi, Toshiaki Fujii

Proceedings Volume 9391, 93911C (2015) https://doi.org/10.1117/12.2078853

KEYWORDS: Video, Image resolution, Wavelet transforms, 3D displays, Cameras, Stereoscopic displays, Autostereoscopic displays, 3D video streaming, Standards development, 3D imaging standards

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Proceedings Article | 7 March 2014 Paper

Reconstruction of compressively sampled ray space by using DCT basis and statistically weighted L1 norm optimization

Qiang Yao, Keita Takahashi, Toshiaki Fujii

Proceedings Volume 9020, 90200X (2014) https://doi.org/10.1117/12.2042132

KEYWORDS: Optimization (mathematics), Compressed sensing, Chemical elements, Associative arrays, Data acquisition, Image quality, Image processing, Image resolution, Spatial resolution, Visualization

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Proceedings Article | 6 March 2014 Paper

Development of free-viewpoint image synthesis system using time varying projection and spacetime stereo

Tatsuro Mori, Keita Takahashi, Toshiaki Fujii

Proceedings Volume 9011, 90111X (2014) https://doi.org/10.1117/12.2038843

KEYWORDS: Cameras, Projection systems, Imaging systems, Video, Digital Light Processing, Image processing, Video acceleration, RGB color model, 3D image reconstruction, Calibration

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Proceedings Article | 6 March 2014 Paper

Integration of multiple view plus depth data for free viewpoint 3D display

Kazuyoshi Suzuki, Yuko Yoshida, Tetsuya Kawamoto, Toshiaki Fujii, Kenji Mase

Proceedings Volume 9011, 901114 (2014) https://doi.org/10.1117/12.2039166

KEYWORDS: Cameras, 3D modeling, Imaging systems, Data modeling, Sensors, Clouds, 3D displays, Video, Image segmentation, Calibration

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Proceedings Article | 6 March 2014 Paper

Superpixel-based 3D warping using view plus depth data from multiple viewpoints

Tomoyuki Tezuka, Keita Takahashi, Toshiaki Fujii

Proceedings Volume 9011, 90111V (2014) https://doi.org/10.1117/12.2042634

KEYWORDS: 3D vision, 3D image processing, Cameras, Image processing, Image segmentation, Video, Stereoscopic cameras, Sensors, Stereoscopic displays, Electronic imaging

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Proceedings Article | 6 March 2014 Paper

Joint estimation of high resolution images and depth maps from light field cameras

Kazuki Ohashi, Keita Takahashi, Toshiaki Fujii

Proceedings Volume 9011, 90111B (2014) https://doi.org/10.1117/12.2042627

KEYWORDS: Image resolution, Cameras, Super resolution, Image processing, Spatial resolution, Lawrencium, Microlens array, Image sensors, Sensors, Microlens

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Proceedings Article | 19 March 2013 Paper

Intensity estimation method of LED array for visible light communication

Takanori Ito, Tomohiro Yendo, Shintaro Arai, Takaya Yamazato, Hiraku Okada, Toshiaki Fujii

Proceedings Volume 8663, 86630V (2013) https://doi.org/10.1117/12.2005738

KEYWORDS: Light emitting diodes, Cameras, Transmitters, Receivers, Telecommunications, Visible radiation, Computer simulations, Signal to noise ratio, Imaging systems, Modulation

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Proceedings Article | 12 March 2013 Paper

Adaptive hole filling for 3D warping-based virtual view synthesis

Tatsuro Mori, Mehrdad Panahpour Tehrani, Toshiaki Fujii, Masayuki Tanimoto

Proceedings Volume 8648, 864823 (2013) https://doi.org/10.1117/12.2002830

KEYWORDS: Cameras, Image processing, 3D image processing, 3D vision, Image filtering, Digital filtering, 3D displays, Optical filters, Factor analysis, Image resolution

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Proceedings Article | 15 May 2012 Paper

Ray-space acquisition system for 3DTV: 100-camera and ray-based acquisition systems

Toshiaki Fujii

Proceedings Volume 8384, 83840H (2012) https://doi.org/10.1117/12.922994

KEYWORDS: Cameras, Imaging systems, Video, 3D acquisition, Analog electronics, Control systems, 3D displays, Video coding, 3D image processing, Signal generators

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Proceedings Article | 28 February 2012 Paper

Multiview video and depth compression for free-view navigation

Yuta Higuchi, Mehrdad Panahpour Tehrani, Tomohiro Yendo, Toshiaki Fujii, Masayuki Tanimoto

Proceedings Volume 8288, 828829 (2012) https://doi.org/10.1117/12.907806

KEYWORDS: Video, Video coding, Video compression, Cameras, Dielectrophoresis, Televisions, Navigation systems, Virtual reality, Image processing, Data compression

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Proceedings Article | 25 January 2012 Paper

Visible light communication in dynamic environment using image/high-speed communication hybrid sensor

Keita Maeno, Mehrdad Panahpour Tehrani, Toshiaki Fujii, Hiraku Okada, Takaya Yamazato, Masayuki Tanimoto, Tomohiro Yendo

Proceedings Volume 8282, 82820I (2012) https://doi.org/10.1117/12.907697

KEYWORDS: Transmitters, Sensors, Light emitting diodes, Receivers, Video, Photodiodes, Visible radiation, High speed cameras, Cameras, Environmental sensing

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