Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Mutsumi Ohta"'
Autor:
Hidetsugu Asano, Kazunori Umeda, Kenji Terabayashi, Takeshi Nagayasu, Mutsumi Ohta, Tatsuya Orimo
Publikováno v:
Journal of the Japan Society for Precision Engineering. 79:565-570
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14c6e563e4e80bf17f369e25417c5e0f
https://doi.org/10.2493/jjspe.79.565
https://doi.org/10.2493/jjspe.79.565
Autor:
Mutsumi Ohta
Publikováno v:
Electronics and Communications in Japan (Part III: Fundamental Electronic Science). 86:66-74
This paper discusses motion compensation on the subband domain. A rigorous mathematical formula is derived that presents how the motion compensation on the full band signal can be expressed on the subband representation. In this way, it is found that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::824289cf0776b027ceb78b9adcd58730
https://doi.org/10.1002/ecjc.1146
https://doi.org/10.1002/ecjc.1146
Publikováno v:
IEEE Transactions on Pattern Analysis and Machine Intelligence. 21:628-633
This paper presents a novel framework for Euclidean structure recovery utilizing a scaled orthographic view and perspective views simultaneously. A scaled orthographic view is introduced in order to automatically obtain camera parameters such as came
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6478a0c70f625ba83879206309a75568
https://doi.org/10.1109/34.777373
https://doi.org/10.1109/34.777373
Autor:
Tetsuo Ishikawa, Yasuharu Shimeki, Atsushi Koike, Shuichi Matsumoto, Mutsumi Ohta, Atsushi Marugame, Yoshiaki Katoh, Kenya Uomori, Osamu Matsunaga, Kazuhiro Matsuzaki
Publikováno v:
The Journal of the Institute of Image Information and Television Engineers. 52:1573-1580
テレビ電話画像から超高精細画像, そしてデータを階層化・統合化して伝送する統合ディジタル放送 (ISDB, Integrated Servlces Digltal Broadcastlng) において必要となる, 動画像の階層化技術と階層
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60fc9c984b104e2d31c777e70c8db720
https://doi.org/10.3169/itej.52.1573
https://doi.org/10.3169/itej.52.1573
Publikováno v:
Signal Processing: Image Communication. 8:365-378
This paper describes novel methods to improve coding efficiency of the wavelet transform from the viewpoint of scanning techniques. Firstly, statistical properties of the wavelet transform are examined using real image sequences. They indicate energy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e4af034e18f1bb56c8a2a38d41d8bcd
https://doi.org/10.1016/0923-5965(95)00058-5
https://doi.org/10.1016/0923-5965(95)00058-5
Autor:
Mutsumi Ohta, Ryoma Oami
Publikováno v:
The Journal of the Institute of Television Engineers of Japan. 50:1162-1171
We propose lossless DCT coding in which the transform matrix is modified with short length words, then reversible quantizer is introduced for transform vectors The modification makes lossless com pression coding possible An 8 by 8 lossless DCT pictur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cfd2495eff38ebb9d11dcc84f8ee1c0
https://doi.org/10.3169/itej1978.50.1162
https://doi.org/10.3169/itej1978.50.1162
Publikováno v:
IEEE Transactions on Circuits and Systems for Video Technology. 5:500-507
This paper presents a novel region-based video coding algorithm for very low bit-rate transmission. A huge amount of region shape information in a conventional region-based coding does not need to be transmitted in the new approach, because it can be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3aee1cee11370a8918655f5eb246a3b
https://doi.org/10.1109/76.475892
https://doi.org/10.1109/76.475892
Publikováno v:
The Journal of the Institute of Television Engineers of Japan. 48:265-269
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd9904e863a87025c28ad4c714af3414
https://doi.org/10.3169/itej1978.48.265
https://doi.org/10.3169/itej1978.48.265
Publikováno v:
4th IEEE ComSoc International Workshop on Multimedia Communications. MULTIMEDIA.
A multimedia player system has been developed. The player is a playback system of video, audio, and graphics recoded on a CD-ROM or received through an ISDN primary rate service. Both CD-ROM and ISDN primary rate services can carry about 1.5Mbit/sec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7effd28489ebbb34495ef04734f2a9b
https://doi.org/10.1109/iwmc.1992.666145
https://doi.org/10.1109/iwmc.1992.666145
Autor:
Mutsumi Ohta, Ryoma Oami
Publikováno v:
ICC
This paper proposes a DCT-based lossless video coding scheme that has compatibility with MPEG-2. It is obtained by modifying the DCT and the quantization process in MPEG-2, and it outperforms lossless coding based on an ordinary DCT by 20% in terms o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4710994ced7e21391b16d5947949d26d
https://doi.org/10.1109/icc.1998.685142
https://doi.org/10.1109/icc.1998.685142