Prof. Yuji Sakamoto Profile

Prof. Yuji Sakamoto

Professor at Hokkaido Univ

SPIE Involvement:

Author

Publications (55)

Proceedings Article | 13 March 2024 Poster + Paper

3DoF holographic head-mounted display with motion sensor based on fast calculation algorithm for CGH

Taichi Sakakihara, Yuji Sakamoto

Proceedings Volume 12910, 129100J (2024) https://doi.org/10.1117/12.3001295

KEYWORDS: Head-mounted displays, Computer generated holography, Light sources, 3D image reconstruction, Holography, Mirrors, Sensors, Liquid crystal displays, Image restoration, Holograms

Read Abstract +

Proceedings Article | 13 March 2024 Poster + Paper

Fast calculation method with foveated rendering for computer-generated hologram

Arisa Muramoto, Yuji Sakamoto

Proceedings Volume 12910, 129100H (2024) https://doi.org/10.1117/12.2692612

KEYWORDS: Computer generated holography, Image resolution, Holograms, Visualization, 3D image reconstruction, Computation time, Speckle, Holography

Read Abstract +

Proceedings Article | 13 March 2024 Poster + Paper

Proposal of head-mounted projector for field of view enlargement in electro-holography

Natsu Kikuchi, Yuji Sakamoto

Proceedings Volume 12910, 129100L (2024) https://doi.org/10.1117/12.3002297

KEYWORDS: Mirrors, 3D image reconstruction, Projection systems, Head-mounted displays, Reflection, Holography, Holograms, Liquid crystal displays, Head

Read Abstract +

SPIE Journal Paper | 1 February 2024 Open Access

Lossless data hiding technique reducing cover data size for compressed videos

Xuefei Li, Seok Kang, Yuji Sakamoto

JEI, Vol. 33, Issue 01, 011005, (February 2024) https://doi.org/10.1117/12.10.1117/1.JEI.33.1.011005

KEYWORDS: Video, Data hiding, Video compression, Multimedia, Digital video discs, Video processing, Data processing, Image compression, Data storage, Quantization

Read Abstract +

DOWNLOAD PAPER

SPIE Journal Paper | 25 August 2023 Open Access

Speckle control for electro-holographic display using high-brightness yellow phosphor light source in projector

Takuo Yoneyama, Yuji Sakamoto

OE, Vol. 62, Issue 08, 083103, (August 2023) https://doi.org/10.1117/12.10.1117/1.OE.62.8.083103

KEYWORDS: Light sources, Speckle, Image restoration, Projection systems, Dichroic mirrors, Computer generated holography, Temporal coherence, 3D image reconstruction, Optical coherence, Incident light

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 26 March 2023 Paper

Fast calculation system for head-mounted display using user’s attitude angle in CGH

Teppei Jodo, Yuji Sakamoto

Proceedings Volume 12592, 125920A (2023) https://doi.org/10.1117/12.2666823

KEYWORDS: Computer generated holography, Head-mounted displays, Holograms, Light sources, Technology, Sensors, Phase compensation, Computing systems, Holography, Augmented reality

Read Abstract +

SPIE Journal Paper | 2 November 2022 Open Access

Method for generating planar computer-generated hologram at free viewpoint from cylindrical object light

Tatsuhiko Baba, Ryotaro Kon, Yuji Sakamoto

OE, Vol. 61, Issue 11, 113101, (November 2022) https://doi.org/10.1117/12.10.1117/1.OE.61.11.113101

KEYWORDS: Holograms, Computer generated holography, 3D image reconstruction, Head-mounted displays, Optical engineering, Data modeling, Diffraction, 3D displays, 3D image processing, Light

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 4 March 2022 Presentation + Paper

Method for reducing speckle contrast in electro-holography illuminated by multimode optical fiber

Yasuo Ito, Yuji Sakamoto

Proceedings Volume 12026, 120260C (2022) https://doi.org/10.1117/12.2609112

KEYWORDS: Speckle, Light sources, Actuators, Speckle pattern, Optical fibers, Image quality, Holography, 3D image reconstruction, Spatial coherence, Multimode fibers

Read Abstract +

SPIE Journal Paper | 9 February 2022

Autotuning GPU code for acceleration of CGH calculation

Hayato Sakai, Yuji Sakamoto

OE, Vol. 61, Issue 02, 023102, (February 2022) https://doi.org/10.1117/12.10.1117/1.OE.61.2.023102

KEYWORDS: Computer generated holography, Holograms, Light sources, Optical engineering, Light, Optimization (mathematics), Head-mounted displays, Graphics processing units, 3D displays, Video acceleration

Read Abstract +

Proceedings Article | 13 March 2021 Paper

A weight-wise watermarking technique for DNN models and its robustness against overwriting attack

Han He, Seok Kang, Yuji Sakamoto

Proceedings Volume 11766, 1176627 (2021) https://doi.org/10.1117/12.2590783

Read Abstract +

Proceedings Article | 13 March 2021 Paper

Data transmission based on fractal compression of object light data in computer-generated hologram

Hiroki Oi, Yuji Sakamoto

Proceedings Volume 11766, 117662D (2021) https://doi.org/10.1117/12.2590218

Read Abstract +

Proceedings Article | 13 March 2021 Paper

Speckleless reconstructed image display using convergent light in CGH

Tatsuya Oshinomi, Masaya Mitobe, Yuji Sakamoto

Proceedings Volume 11766, 117662P (2021) https://doi.org/10.1117/12.2590763

Read Abstract +

Proceedings Article | 13 March 2021 Paper

Hidden surface removal method using object point based ray tracing in CGH

Keita Watanabe, Yuji Sakamoto

Proceedings Volume 11766, 117660K (2021) https://doi.org/10.1117/12.2590812

Read Abstract +

Proceedings Article | 21 February 2020 Paper

Study on table-top optical system enlarging viewing-zone for displaying holographic aerial image

Takahiro Kobayakawa, Yuji Sakamoto

Proceedings Volume 11306, 113060R (2020) https://doi.org/10.1117/12.2545843

KEYWORDS: LCDs, Holography, Holograms, 3D image reconstruction, Diffraction, Mirrors, Image display, Computer generated holography, Fourier transforms, Light wave propagation

Read Abstract +

Proceedings Article | 21 February 2020 Paper

Fast calculation by auto-optimized method in CGH video generation using GPU

Hayato Sakai, Yuji Sakamoto

Proceedings Volume 11306, 113060S (2020) https://doi.org/10.1117/12.2545879

KEYWORDS: Light sources, Holograms, Computer generated holography, 3D image reconstruction, Video acceleration, Video, Light, Optimization (mathematics), Time metrology

Read Abstract +

Proceedings Article | 1 March 2019 Paper

Near-eye holographic display device by simple optical system using HOE

Kazuya Furuta, Hideyoshi Horimai, Toshihiro Kasezawa, Yuji Sakamoto

Proceedings Volume 10944, 1094413 (2019) https://doi.org/10.1117/12.2509309

KEYWORDS: 3D image reconstruction, Holography, Holographic optical elements, Head-mounted displays, LCDs, Diffraction, Holograms, Transparent conductors, Optical components, Computer generated holography

Read Abstract +

Proceedings Article | 1 March 2019 Presentation + Paper

Simulating the effects of statistical characteristics of random phases on speckle noise in computer-generated hologram

Kohei Tamagawa, Masaya Mitobe, Yuji Sakamoto

Proceedings Volume 10944, 109440W (2019) https://doi.org/10.1117/12.2509278

KEYWORDS: Speckle, Computer generated holography, 3D image reconstruction, Computer simulations, Holograms, Holography, Optical simulations, Reflection

Read Abstract +

Proceedings Article | 1 March 2019 Paper

Effect of point pitch on speckle noise in computer-generated hologram using point-based method

Masaya Mitobe, Yuji Sakamoto

Proceedings Volume 10944, 109440R (2019) https://doi.org/10.1117/12.2509088

KEYWORDS: Computer generated holography, Speckle, Light sources, Holograms, Eye, Signal to noise ratio, Retina, Image resolution, Ray tracing, Holography

Read Abstract +

SPIE Journal Paper | 30 May 2018 Open Access

Holographic head-mounted display with correct accommodation and vergence stimuli

Takuo Yoneyama, Eishin Murakami, Yuki Oguro, Hibiki Kubo, Kazuhiro Yamaguchi, Yuji Sakamoto

OE, Vol. 57, Issue 06, 061619, (May 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.6.061619

KEYWORDS: Head-mounted displays, Holography, 3D image reconstruction, Holograms, Spatial light modulators, Visualization, Light sources, Transparent conductors, Light emitting diodes, Light

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 15 May 2017 Paper

Full-color large-scaled computer-generated holograms for physical and non-physical objects

Kyoji Matsushima, Yasuhiro Tsuchiyama, Noriaki Sonobe, Shoya Masuji, Masahiro Yamaguchi, Yuji Sakamoto

Proceedings Volume 10233, 1023318 (2017) https://doi.org/10.1117/12.2265798

KEYWORDS: 3D displays, 3D scanning, Optical filters, Computer generated holography, Holography, 3D image reconstruction, 3D image processing, Digital holography, RGB color model, Holograms, Digital imaging, 3D modeling

Read Abstract +

Proceedings Article | 6 April 2017 Paper

Full-color high-definition CGH reconstructing hybrid scenes of physical and virtual objects

Yasuhiro Tsuchiyama, Kyoji Matsushima, Sumio Nakahara, Masahiro Yamaguchi, Yuji Sakamoto

Proceedings Volume 10127, 101270Y (2017) https://doi.org/10.1117/12.2251414

KEYWORDS: Holography, Computer generated holography, Optical filters, RGB color model, Fringe analysis, Remote sensing, 3D image reconstruction, 3D image processing, Light emitting diodes, Light sources

Read Abstract +

Proceedings Article | 27 February 2014 Paper

Computer-generated hologram of actual objects from arbitrary viewpoints with range sensors and digital cameras

Keigo Tai, Tsubasa Ichikawa, Yuji Sakamoto

Proceedings Volume 9006, 90060S (2014) https://doi.org/10.1117/12.2038940

KEYWORDS: Computer generated holography, Sensors, Holograms, 3D modeling, Digital cameras, Cameras, Computer simulations, 3D image processing, Light sources, Spatial frequencies

Read Abstract +

Proceedings Article | 25 February 2014 Paper

Static responses of accommodation and convergence to holographic images and real objects

Ryuichi Ohara, Takuo Yoneyama, Masanobu Kurita, Yuji Sakamoto, Fumio Okuyama

Proceedings Volume 9006, 900611 (2014) https://doi.org/10.1117/12.2039453

KEYWORDS: Holograms, 3D image reconstruction, Holography, Visualization, LCDs, Eye, 3D displays, Light emitting diodes, Mirrors, Cameras

Read Abstract +

Proceedings Article | 25 February 2014 Paper

Fast calculation with point-based method to make CGHs of the polygon model

Yuki Ogihara, Tsubasa Ichikawa, Yuji Sakamoto

Proceedings Volume 9006, 90060T (2014) https://doi.org/10.1117/12.2039821

KEYWORDS: Surface plasmons, Holograms, Computer generated holography, Light sources, Light, Light wave propagation, Holography, Fourier transforms, Graphics processing units, Geometrical optics

Read Abstract +

Proceedings Article | 25 February 2014 Paper

Semi-portable full-color electro-holographic display with small size

Takuo Yoneyama, Tsubasa Ichikawa, Yuji Sakamoto

Proceedings Volume 9006, 900617 (2014) https://doi.org/10.1117/12.2037999

KEYWORDS: 3D image reconstruction, Holograms, 3D displays, Holography, 3D image processing, Calibration, Light sources, Spatial light modulators, Displays, Visualization

Read Abstract +

Proceedings Article | 1 March 2013 Paper

Eyepiece-type full-color electro-holographic display for binocular vision

Takuo Yoneyama, Chanyoung Yang, Yuji Sakamoto, Fumio Okuyama

Proceedings Volume 8644, 864413 (2013) https://doi.org/10.1117/12.2003564

KEYWORDS: Holograms, Light sources, Light emitting diodes, Spatial light modulators, 3D displays, 3D image reconstruction, Fourier transforms, Computer generated holography, Holography, 3D image processing

Read Abstract +

Proceedings Article | 1 March 2013 Paper

Realistic 3D image reconstruction in CGH with Fourier transform optical system

Tsubasa Ichikawa, Kazuhiro Yamaguchi, Yuji Sakamoto

Proceedings Volume 8644, 86440D (2013) https://doi.org/10.1117/12.2003371

KEYWORDS: Holograms, Fourier transforms, 3D image reconstruction, Computer generated holography, Ray tracing, Visualization, Diffraction, Light sources, LCDs, 3D image processing

Read Abstract +

Proceedings Article | 1 March 2013 Paper

Measurement method for objective evaluation of reconstructed image quality in CGH

Kazuhiro Suzuki, Yuji Sakamoto

Proceedings Volume 8644, 864412 (2013) https://doi.org/10.1117/12.2003530

KEYWORDS: 3D image reconstruction, Holograms, Computer generated holography, Signal to noise ratio, Image quality, Image processing, Cameras, Speckle, 3D image processing, Spherical lenses

Read Abstract +