Yuji Sakamoto

J-GLOBAL         Last updated: Oct 8, 2018 at 17:47
 
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Name
Yuji Sakamoto
Affiliation
Hokkaido University

Research Areas

 
 

Published Papers

 
Analysis of Effect of Quantization Error on Speckle Noise in Computer-generated Hologram using Point-based Method
Masaya Mitobe, Yuji Sakamoto
11th International Symposium in Display Holography (ISDH2018)      Jul 2018
A Holographic Display Method for Volume Data with Volume Rendering Method
Zixiang Lu, Yuji Sakamoto
11th International Symposium in Display Holography (ISDH2018)      Jul 2018
Holographic head-mounted display with correct accommodation and vergence stimuli
Takuo Yoneyama, Eishin Murakami, Yuki Oguro, Hibiki Kubo, Kazuhiro Yamaguchi, Yuji Sakamoto
Optical Engineering   57(6)    May 2018
Yasutoshi Miura, Xuefei Li, Seok Kang, Yuji Sakamoto
International Workshop on Advanced Image Technology 2018   G3-4    Jan 2018
Masaya Mitobe, Yuji Sakamoto
International Workshop on Advanced Image Technology 2018   F4-3    Jan 2018
Xuefei Li, Yasutoshi Miura, Seok Kang, Yuji Sakamoto
International Workshop on Advanced Image Technology 2018   A2-2    Jan 2018
Lingjie Wei, Yuji Sakamoto
International Workshop on Advanced Image Technology 2018   F2-3    Jan 2018
IWAIT 2018 Best Paper Awards
Holographic display methods for volume data: polygon-based and MIP-based methods
Zixiang Lu and Yuji Sakamoto
Applied Optics   57(Issue 1) A142-149   2018
Color Compact Head-Mounted Holographic Display Using Laser Diodes
Hibiki Kubo, Yuki Oguro, Yuji Sakamoto
The 24th International Display Workshops (IDW '17)   3D 1-7   Dec 2017
Automatic Lens Distortion Correction Method for Compact Holographic HMD
Yuki Oguro, Yuji Sakamoto
International Workshop on Holography and related technologies 2017   24a5    Nov 2017
Analysis of Transient Visual Evoked Potential on Electro-holographic Image
Takemitsu Mizuki, Masataka Fujiwara, Yuji Sakamoto
International Workshop on Holography and related technologies 2017   (P8)    Nov 2017
Development of Holo-HMD and remaining issue
Yuji Sakamoto
International Workshop on Holography and related technologies 2017   23a4    Nov 2017
A Holographic Display Method of Medical Images with Modified Ray Tracing Method
Zixiang Lu, Yuji Sakamoto
Digital Holography and Three-Dimensional Imaging, OSA Technical Digest (Optical Society of America),   M3B(4)    May 2017
Head-mounted Holographic Display with Correct Depth-focusing for AR
Yuji Sakamoto
Frontiers in Optics 2017,OSA Technical Digest (online),Optical Society of America, 2017   (FTu4C.2.)    2017
Eishin MURAKAMI, Yuki OGURO, Yuji SAKAMOTO
IEICE Transactions on Electronics   E100.C(Issue 11) 965-971   2017
Dynamic visual responses of accommodation and vergence to electro-holographic images
Aya Nozaki, Masaya Mitobe, Fumio Okuyama, and Yuji Sakamoto
Optics Express   25(Issue 4) 4542-4551   2017
A Holographic Display method of Maximum Intensity Projection of Medical Image by Electro-holography
Zixiang Lu, Yuji Sakamoto
The Sixth Japan-Korea Workshop on Digital Holography and Information Photonics   20-30   Dec 2016
Fast Calculation Method Considering Hidden Surface Removal for Computer-Generated Holograms using Geometric Sequence
Takuya Sugawara, Yuji Sakamoto
The Sixth Japan-Korea Workshop on Digital Holography and Information Photonics   20-25   Dec 2016
Development of a Measurement System for Dynamic Visual Responses to Images of Electro-holography and Binocular Stereo Vision
Aya Nozaki, Fumio Okuyama, Yuji Sakamoto
he Sixth Japan-Korea Workshop on Digital Holography and Information Photonics   20-24   Dec 2016
Study on Holographic Monocle Device
Yuji Sakamoto
The Sixth Japan-Korea Workshop on Digital Holography and Information Photonics   Inv20(a4)    Dec 2016
Study on Compact Holographic Head-Mounted Display for Augmented Reality
E. Murakami, Y. Oguro, Y. Sakamoto
The 23rd International Display Workshops in conjunction with Asia Display 2016   3Dp1/3DSA 1-10   Dec 2016   [Refereed]
IDW/AD '16 Outstanding Poster Paper Award
Subjective Evaluation of Scrambled Images Using Reversible Privacy Protection Technique
Yasunori Yamamoto, Seok Kang, Yuji Sakamoto
International Workshop on Advanced Image Technology 2016   2C(4)    Jan 2016
Ryosuke Watanabe, Kazuhiro Yamaguchi, Yuji Sakamoto,
Applied Optics   55(Issue 3) A167-A177   Jan 2016
Takuya Sugawara, Yuki Ogihara, Yuji Sakamoto,
Applied Optics   55(Issue 3) A160-A166   Jan 2016
A Partial Scrambling Technique with Adjustable Degradation Degrees Embedding Different Types of Contents
Xuefei Li , Seok Kang, Yuji Sakamoto
International Workshop on Advanced Image Technology 2016   2C(5)    Jan 2016
IWAIT 2016 Best Paper Awards
Viewing Zone Expansion Method by Switching LEDs for Holographic HMD Based on Fourier Transform Optical System
Eishin Murakami, Ryosuke Watanabe, Yuji Sakamoto
International Workshop on Holography and related technologies 2015   We5(P11)    Nov 2015
Fast Generation Method of CGH Animation for Viewpoint Movement using Fourier Transform Optical System
Ryosuke Watanabe, Yuji Sakamoto
International Workshop on Holography and related technologies 2015   We5(P10)    Nov 2015
Fast Calculation Method for Computer-generated Holograms using Geometric Sequence on Fourier Transform Optical System
Takuya Sugawara, Yuji Sakamoto
International Workshop on Holography and related technologies 2015   We5(P9)    Nov 2015
Simultaneous Measurement of Dynamic Vergence and Accommodation Responses to Reconstructed Images of Electro-holography
Aya Nozaki, Fumio Okuyama, Yuji Sakamoto
International Workshop on Holography and related technologies 2015   We5(P7)    Nov 2015
(Plenary)"Futures can be invented" - Remaining issues of electro-holography and CGH
Yuji Sakamoto
The 5th Korea-Japan Workshop on Digital Holography and Information Photonics   Session 1    Sep 2015
Fast calculation method of computer generated hologram using ray tracing method for Fourier transform optical system
Ryosuke Watanabe, Takuya Sugawara, Yuji Sakamoto
10th International Symposium on Display Holography   P-16    Jul 2015
Fast calculation of CGH for rectangular patch model
Yuji Sakamoto, Yuki Ogihara, Takuya Sugawara
10th International Symposium on Display Holography      Jul 2015
Reversible privacy protection technique combining partial scrambling and data hiding
S. Shimaura, S. Kang, and Y. Sakamoto
2015 Joint Conference of IWAIT and IFMIA   123    Jan 2015
Dynamic Responses of Accommodation and Vergence to Electro-holographic Images
R. Ohara, Y. Sakamoto and F. Okuyama
2015 Joint Conference of IWAIT and IFMIA   122    Jan 2015
R. Ohara, T. Yoneyama, M. Kurita, Y. Sakamoto and F. Okuyama
Applied Optics   54(Iss.4) 615-621   Jan 2015
Y. Ogihara, Y. Sakamoto
Applied Optics   54(Issue1) A76-A83   2015
Fast Calculation Algorithm Based on Point-Based Method for CGHs Using Polygon Model
Yuki Ogihara, Yuji Sakamoto
IDW2014   VHF(5-3)    Dec 2014
Computer-Generated Hologram Using Range Sensors and Digital Cameras at Arbitrary Locations
K. Tai, Y. Sakamoto
IDW2014   3D 1-2   Dec 2014
Fast Generation Method for Computer-Generated Hologram Animation with Hidden Surface Removal Using Ray Tracing Method
Ryosuke Watanabe, Yuji Sakamoto
JSAP-OSA Joint Symposia (The 75th JSAP Autumn Meeting 2014)   20a(C4-7)    Sep 2014
T. Ichikawa, T. Yoneyama, and Y. Sakamoto
Optical Express   21 32019-32031   Dec 2013
Ohsawa Y, Yamaguchi K, Ichikawa T, Sakamoto Y
Applied optics   52(1) A167-A176   Jan 2013
Ichikawa T, Yamaguchi K, Sakamoto Y
Applied optics   52(1) A201-A209   Jan 2013   [Refereed]
Hosoyachi K, Yamaguchi K, Ichikawa T, Sakamoto Y
Applied optics   52(1) A33-A44   Jan 2013   [Refereed]
ICHIKAWA Tsubasa,SAKAMOTO Yuji,SUBAGYO Agus,SUEOKA Kazuhisa
Appl Opt   50(34) H211   Dec 2011
SAKATA Hironobu,HOSOYACHI Kouhei,YANG Chan-young,SAKAMOTO Yuji
Appl Opt   50(34) H306   Dec 2011
YAMAGUCHI Kazuhiro, SAKAMOTO Yuji
The Journal of The Institute of Image Information and Television Engineers   63(12) 1846-1852   Dec 2009
Computer-generated hologram (CGH) is a technology that makes hologram data using a simulation of the recording process of holography. However, there are still many problems with CGH. We describe a calculation method that takes into consideration t...
Asano Hiroyuki, Sakamoto Yuji
The journal of the Institute of Image Information and Television Engineers   61(4) 514-517   Apr 2007
For conventional grating images, high luminance of reproduction images is required. In color representation of conventional grating images, red, green and blue spectra are fixed. We propose a color representation method for grating images that use...

Misc

 
IPSJ SIG Notes   2012(7) 1-6   Nov 2012
Some methods to create animation automatically from one picture have been proposed. There is a method that gives a flicker to a picture to make animation. However, the flicker generated by the simple harmonic motion causes monotonous animation. In...
鈴木一弘, 坂本雄児
インテリジェント・システム・シンポジウム(CD-ROM)   22nd ROMBUNNO.1B2-2   Aug 2012
山本薫, 坂本雄児
インテリジェント・システム・シンポジウム(CD-ROM)   22nd ROMBUNNO.1B2-1   Aug 2012
HARADA SHOHEI, KANG SEOK, SAKAMOTO YUJI
電子情報通信学会技術研究報告   112(129(EMM2012 1−34)) 1-8   Jul 2012
IBARAKI MASANORI, SAKAMOTO YUJI
情報処理学会研究報告(CD−ROM)   2011(4) ROMBUNNO.CG-145,NO.28   Dec 2011
Masanori Ibaraki, Yuji Sakamoto
IPSJ SIG Notes. CVIM   2011(28) 1-6   Nov 2011
The volume intersection method is effective as modeling 3D objects from the multi-viewpoint images. It is important for generating 3D models from the images to extract object area in the images. This paper presents an object extraction method by u...
CHOU Kizawa, KANG Seok, 坂本雄児
情報科学技術フォーラム   FIT 2011 511-512   Aug 2011
市川翼, 坂本雄児
情報科学技術フォーラム   FIT 2011 285-286   Aug 2011
坂本雄児
情報科学技術フォーラム   FIT 2011 291-292   Aug 2011
山口一弘, 市川翼, 坂本雄児
情報科学技術フォーラム   FIT 2011 281-282   Aug 2011
ヤン チャンヨン, 坂本雄児
情報科学技術フォーラム   FIT 2011 289-290   Aug 2011
福田康範, 坂本雄児
情報科学技術フォーラム   FIT 2011 381-382   Aug 2011
細谷地航平, 坂本雄児
情報科学技術フォーラム   FIT 2011 283-284   Aug 2011
茨木雅典, 坂本雄児
情報科学技術フォーラム   FIT 2011 389-390   Aug 2011
若色宏明, KANG Seok, 坂本雄児
情報科学技術フォーラム   FIT 2011 509-510   Aug 2011
佐藤裕典, 坂本雄児
情報科学技術フォーラム   FIT 2011 287-288   Aug 2011
SAKAMOTO Yuji
The Journal of the Institute of Image Electronics Engineers of Japan   40(3) 489-493   May 2011
SATO YUSUKE, SAKAMOTO YUJI
電子情報通信学会技術研究報告   110(421(IE2010 104−144)) 29-34   Feb 2011
HONDA YASUHIRO, SAKAMOTO YUJI
電子情報通信学会技術研究報告   110(421(IE2010 104−144)) 17-22   Feb 2011
SASAMORI ARATA, YAMAGUCHI KAZUHIRO, SAKAMOTO YUJI
電子情報通信学会技術研究報告   110(421(IE2010 104−144)) 175-180   Feb 2011
FUKUTA YASUNORI, SAKAMOTO YUJI
電子情報通信学会技術研究報告   110(421(IE2010 104−144)) 23-28   Feb 2011
山口一弘, 市川翼, 坂本雄児
Optics & Photonics Japan講演予稿集(CD−ROM)   2011 ROMBUNNO.30PD4   2011
SHINDO ARI, SAKAMOTO YUJI
情報処理学会研究報告(CD−ROM)   2010(4) ROMBUNNO.CG-141,11   Dec 2010
Ari Shindo, Yuji Sakamoto
IPSJ SIG Notes   2010(11) 1-6   Nov 2010
Climbing plants attract attention because they are suited for making green spaces along the wall of buildings. Particularly, model generation methods for climbing plants are useful for prediction and estimation of scenery after greening. Then, thi...
JIN Tomohiro, KANG Seok, SAKAMOTO Yuji
ITE Technical Report   34(31) 57-60   Jul 2010
This paper proposes a decreasing technique of increase rate of data size in the partial scrambling technique. In the proposed technique, quantized DCT coefficients in I-frames are shuffled or changed by a target image quality for PSNR. The amount ...
SAKAMOTO Yuji
ITE Technical Report   34(31) 21-24   Jul 2010
Recently, 3D films and 3D TV sets are releasing and we can watch 3D images in daily life. However, the stereoscopic method used by these 3D systems are not suited for human perceptual for three dimensional objects. A Holo TV system based on a holo...
FUKUTA Yasunori, SAKAMOTO Yuji
ITE Technical Report   34(31) 9-12   Jul 2010
"Tour Into the Picture (TIP)" is one of Image-based rendering method for actualizing walk-through from a single image. This paper proposes a method of constructing three dimensional space from a single landscape image using TIP. A problem of TIP i...
SASAMORI Arata, YAMAGUCHI Kazuhiro, SAKAMOTO Yuji
ITE Technical Report   34(31) 5-8   Jul 2010
A computer-generated hologram (CGH) is a technology expected to achieve ideal 3D displays. To achieve realistic 3D displays using a CGH, it is necessary to establish rendering technologies. However, studies about them are not sufficient. Especiall...
SATO Yusuke, SAKAMOTO Yuji
ITE Technical Report   34(31) 1-4   Jul 2010
Computer-generated hologram (CGH) is a hologram generated by simulating recording process in optical holography. High resolution output devices are required to observe 3D images. However, resolution of output devices is not high enough to display ...
251(0) 21-24   Jul 2010
SHINDO Ari, SAKAMOTO Yuji
ITE Technical Report   34(6) 233-238   Feb 2010
Urban greening has been campaigned actively today. Climbing plants attract attention because they are suited for making green spaces along the wall of buildings. Particularly, model generation methods for climbing plants are useful for prediction ...
HONDA Yasuhiro, SAKAMOTO Yuji
ITE Technical Report   34(6) 227-232   Feb 2010
Holography is an ideal 3-D display technology which can reconstruct the object light. Computer-Generated Holograms (CGH) made with simple equipment. We had proposed the method for CGH from the multi-view images taken with a common camera. However,...
MIKAMI Hirosato, SAKAMOTO Yuji
ITE Technical Report   34(6) 215-220   Feb 2010
We suggested a method which was contour extraction using active contour model with structuring elements and studied about extract layers of vertebrate retina from Optical Coherence Tomography (OCT). In this paper, We obtain extraction Retina Pigme...
MIKAMI HIROSATO, SAKAMOTO YUJI
映像情報メディア学会技術報告   34(6(AIT2010 1-48/HI2010 1-48/ME2010 1-48)) 215-220   Feb 2010
HONDA YASUHIRO, SAKAMOTO YUJI
映像情報メディア学会技術報告   34(6(AIT2010 1-48/HI2010 1-48/ME2010 1-48)) 227-232   Feb 2010
SHINDO ARI, SAKAMOTO YUJI
映像情報メディア学会技術報告   34(6(AIT2010 1-48/HI2010 1-48/ME2010 1-48)) 233-238   Feb 2010
SHINDO Ari, SAKAMOTO Yuji
IEICE technical report. Image engineering   109(415) 233-238   Feb 2010
Urban greening has been campaigned actively today. Climbing plants attract attention because they are suited for making green spaces along the wall of buildings. Particularly, model generation methods for climbing plants are useful for prediction ...
HONDA Yasuhiro, SAKAMOTO Yuji
IEICE technical report. Image engineering   109(415) 227-232   Feb 2010
Holography is an ideal 3-D display technology which can reconstruct the object light. Computer-Generated Holograms(CGH) made with simple equipment. We had proposed the method for CGH from the multi-view images taken with a common camera. However, ...
MIKAMI Hirosato, SAKAMOTO Yuji
IEICE technical report. Image engineering   109(415) 215-220   Feb 2010
We suggested a method which was contour extraction using active contour model with structuring elements and studied about extract layers of vertebrate retina from Optical Coherence Tomography(OCT). In this paper, We obtain extraction Retina Pigmen...
SHINDO Ari, SAKAMOTO Yuji
IEICE technical report   109(414) 233-238   Feb 2010
Urban greening has been campaigned actively today. Climbing plants attract attention because they are suited for making green spaces along the wall of buildings. Particularly, model generation methods for climbing plants are useful for prediction ...
HONDA Yasuhiro, SAKAMOTO Yuji
IEICE technical report   109(414) 227-232   Feb 2010
Holography is an ideal 3-D display technology which can reconstruct the object light. Computer-Generated Holograms(CGH) made with simple equipment. We had proposed the method for CGH from the multi-view images taken with a common camera. However, ...
MIKAMI Hirosato, SAKAMOTO Yuji
IEICE technical report   109(414) 215-220   Feb 2010
We suggested a method which was contour extraction using active contour model with structuring elements and studied about extract layers of vertebrate retina from Optical Coherence Tomography(OCT). In this paper, We obtain extraction Retina Pigmen...
MIYAKAWA KENTARO, KANG SEOK, SAKAMOTO YUJI
電子情報通信学会技術研究報告   109(379(LOIS2009 60-78)) 37-42   Jan 2010
SUMIYOSHI SHIN'ICHI, SAKAMOTO YUJI
映像情報メディア学会技術報告   33(55(BCT2009 135-150)) 17-22   Dec 2009
SUMIYOSHI Shinichi, SAKAMOTO Yuji
IEICE technical report. Communication systems   109(322) 17-22   Nov 2009
Methods which reconstruct 3D models from multi-view images come to the front due to recent advancement in image processing. There is a matter to be incapable of concavo-convex shape with spike in conventional methods reconstructing 3D models from ...
三上博理, 坂本雄児
映像情報メディア学会冬季大会講演予稿集(CD-ROM)   2009 ROMBUNNO.9-10   Nov 2009
SUMIYOSHI SHIN'ICHI, SAKAMOTO YUJI
映像情報メディア学会技術報告   33(44(ME2009 175-186)) 31-34   Oct 2009
宮川健太朗, KANG Seok, 坂本雄児
電気・情報関係学会北海道支部連合大会講演論文集(CD-ROM)   2009 ROMBUNNO.167   Oct 2009
進藤亜梨, 坂本雄児
情報科学技術フォーラム   FIT 2009 249-250   Aug 2009
MIKAMI Hirosato, KONISHI Hayato, SAKAMOTO Yuji
IEICE technical report. ME and bio cybernetics   109(106) 17-22   Jun 2009
Optical Coherence Tomography images (OCT) have problems such as speckle noise and shadowing. Therefore, it is difficult for general segmentation algorithms to extract layers of vertebrate retina. To solve this problem, a method which was contour e...
MIKAMI HIROSATO, KONISHI HAYATO, SAKAMOTO YUJI
電子情報通信学会技術研究報告   109(106(MBE2009 13-17)) 17-22   Jun 2009
KATO Atsushi, SAKAMOTO Yuji
ITE Technical Report   33(6) 207-212   Feb 2009
Electro-Holography using a reflective LCD is expected as the 3-dimensional movie display technology in the future. We realized the reflective LCD Electro-Holography allowing for the wide viewing zone and visual field using the Fourier transform op...
KATO Atsushi, SAKAMOTO Yuji
IEICE technical report   108(424) 207-212   Jan 2009
Electro-Holography using a reflective LCD is expected as the 3-dimensional movie display technology in the future. We realized the reflective LCD Electro-Holography allowing for the wide viewing zone and visual field using the Fourier transform op...
KATO Atsushi, SAKAMOTO Yuji
IEICE technical report. Image engineering   108(425) 207-212   Jan 2009
Electro-Holography using a reflective LCD is expected as the 3-dimensional movie display technology in the future. We realized the reflective LCD Electro-Holography allowing for the wide viewing zone and visual field using the Fourier transform op...
KATO ATSUSHI, SAKAMOTO YUJI
電子情報通信学会技術研究報告   108(425(IE2008 204-252)) 207-212   Jan 2009
SAKAMOTO YUJI
視覚の科学   29(4) 120-125   Jan 2009
SAWADA Keiichi, KANG Seok, SAKAMOTO Yuji
ITE Technical Report   32(56) 41-45   Dec 2008
In this paper, we propose a MPEG video scrambling method that have the ability to control the concealed level considering visual characteristics. In the proposed method, a target PSNR of the scrambled video is appointed, and the quantized DCT coef...
SAWADA Keiichi, KANG Seok, SAKAMOTO Yuji
IPSJ SIG Notes   2008(124) 41-45   Dec 2008
In this paper, we propose a MPEG video scrambling method that have the ability to control the concealed level considering visual characteristics. In the proposed method, a target PSNR of the scrambled video is appointed, and the quantized DCT coef...
SAWADA Keiichi, KANG Seok, SAKAMOTO Yuji
IEICE technical report. Communication systems   108(343) 41-45   Dec 2008
In this paper, we propose a MPEG video scrambling method that have the ability to control the concealed level considering visual characteristics. In the proposed method, a target PSNR of the scrambled video is appointed, and the quantized DCT coef...
SAWADA Keiichi, KANG Seok, SAKAMOTO Yuji
IEICE technical report. Image engineering   108(344) 41-45   Dec 2008
In this paper, we propose a MPEG video scrambling method that have the ability to control the concealed level considering visual characteristics. In the proposed method, a target PSNR of the scrambled video is appointed, and the quantized DCT coef...
SAWADA KEIICHI, KANG SEOK, SAKAMOTO YUJI
情報処理学会研究報告   2008(124(AVM-63)) 41-45   Dec 2008
IWAMI SAKI, SAKAMOTO YUJI
Optics & Photonics Japan講演予稿集   2008 374-375   Nov 2008
KINOSHITA MASAO, SAKAMOTO YUJI
Optics & Photonics Japan講演予稿集   2008 248-249   Nov 2008
森智美, 坂本雄児
電気・情報関係学会北海道支部連合大会講演論文集(CD-ROM)   2008 ROMBUNNO.0113   Oct 2008
住吉信一, 坂本雄児
電気・情報関係学会北海道支部連合大会講演論文集(CD-ROM)   2008 ROMBUNNO.0223   Oct 2008
笹森新, 坂本雄児
電気・情報関係学会北海道支部連合大会講演論文集(CD-ROM)   2008 ROMBUNNO.0221   Oct 2008
坂田裕辰, 坂本雄児
電気・情報関係学会北海道支部連合大会講演論文集(CD-ROM)   2008 ROMBUNNO.0112   Oct 2008
Mori Tomomi, Sakamoto Yuji
ITE Technical Report   32(46) 39-42   Oct 2008
In this paper, we propose a new simple method of making animations that have motion like water surface and sunlight through foliage by adding flicker to a picture. In our method, we generate height data of surface from an original image, and, by o...
MORI TOMOMI, SAKAMOTO YUJI
映像情報メディア学会技術報告   32(46(ME2008 162-173)) 39-42   Oct 2008
Sakata Hironobu, Sakamoto Yuji
7(3) 377-378   Aug 2008
Mori Tomomi, Sakamoto Yuji
7(3) 283-284   Aug 2008
坂田裕辰, 坂本雄児
情報科学技術フォーラム   FIT 2008 377-378   Aug 2008
小西勇人, 坂本雄児
情報科学技術フォーラム   FIT 2008 203-204   Aug 2008
宮川健太朗, KANG Seok, 坂本雄児
情報科学技術フォーラム   FIT 2008 249-250   Aug 2008
森智美, 坂本雄児
情報科学技術フォーラム   FIT 2008 283-284   Aug 2008
Sakamoto Yuji, Kushimoto Kei, Matumura Yutaka
IPSJ SIG Notes. CVIM   2008(27) 519-524   Mar 2008
There are some representations method for three-dimensional light field. Here, we will discuss the wave-representation method which records the wave distribution of light. The method has advantages of adaptation for holographic three-dimensional s...
SAKAMOTO YUJI, KUSHIMOTO KEI, MATSUMURA YUTAKA
情報処理学会研究報告   2008(27(CVIM-162)) 519-524   Mar 2008
Iwami Saki, Sakamoto Yuji
Proceedings of the IEICE General Conference   2008(2)    Mar 2008
Yamaguchi Kazuhiro, Sakamoto Yuji
Proceedings of the IEICE General Conference   2008(2)    Mar 2008
山口一弘, 坂本雄児
電子情報通信学会大会講演論文集   2008 46   Mar 2008
岩見早紀, 坂本雄児
電子情報通信学会大会講演論文集   2008 47   Mar 2008
Sakamoto Yuji, Kushimoto Kei, Matumura Yutaka
Technical report of IEICE. PRMU   107(539) 519-524   Mar 2008
There are some representations method for three-dimensional light field. Here, we will discuss the wave-representation method which records the wave distribution of light. The method has advantages of adaptation for holographic three-dimensional s...
Sakamoto Yuji, Kushimoto Kei, Matumura Yutaka
IEICE technical report. Image engineering   107(538) 519-524   Mar 2008
There are some representations method for three-dimensional light field. Here, we will discuss the wave-representation method which records the wave distribution of light. The method has advantages of adaptation for holographic three-dimensional s...
SAKAMOTO YUJI, KUSHIMOTO KEI, MATSUMURA YUTAKA
電子情報通信学会技術研究報告   107(538(IE2007 261-347)) 519-524   Mar 2008
KONISHI Hayato, SAKAMOTO Yuji
IEICE technical report. Image engineering   107(489) 61-65   Feb 2008
To extract contour removed bumpy region from target object, a lot of method are proposed. But it is difficult to decide the parameter of bumpy length. In this paper, we propose an improved method of active contour model applied structuring method....
SAWADA Keiichi, KANG Seok, SAKAMOTO Yuji
IEICE technical report. Image engineering   107(489) 7-11   Feb 2008
Recently, the content delivery services such as the Internet deliveries and Pay-TV have become active. However, it has not gotten the users as many as the free deliveries, and it has the problems of the piracy. Then, the methods by scrambling vide...

Research Grants & Projects

 
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(B))
Project Year: 2003 - 2005    Investigator(s): Yuji SAKAMOTO
1.ObjectivesPurpose of this study is to develop holographic 3D display system for volume data using a computer-generated hologram technique and to evaluate the 3D images.2.Results of research(1)We succeeded in displaying a three-dimensional image ...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(B))
Project Year: 1998 - 2000    Investigator(s): Yoshinao AOKI
The research results are listed as follows ;(1) We proposed a new concept of 'avatar language' in relation to avatar technique in the Internet to realize a non-verbal communication, where gestures and emotional expressions of avatars are displayed...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(一般研究(C))
Project Year: 1994 - 1995    Investigator(s): Hiroshi TAZAWA
(1) As an experimental animal model, chick embryos were investigated for their physiological functions and growth to evaluate sdverse effects of pre-incubation egg storage and failure to turn eggs during the early incubation period.(2) Two-dimensi...