Title :
High efficiency 64 kb/s video codec based on a hybrid quantization
Author :
Itoh, Takashi ; Kawai, Osamu ; Matsuda, Kiichi ; Tsuda, Toshitaka ; Homma, Toshihiro ; Ohuchi, Noriaki
Author_Institution :
Fujitsu Lab. Ltd., Kawasaki, Japan
Abstract :
The authors discuss an experimental 64-kb/s video codec that transmits still and motion pictures in several coding modes. In previous work (1986), they proposed a coding scheme, tailored to 384-kb/s transmission, that used motion-compensated prediction and hybrid quantization and a 64-kb/s video codec design concept having several coding modes. Here, they detail the computer simulation used to check the proposed coding, scheme´s efficiency at 64 kb/s. They then describe the hardware architecture that implements the design concept. The performance of the video codec is then demonstrated in different coding modes.<>
Keywords :
ISDN; codecs; decoding; digital communication systems; encoding; video equipment; visual communication; 64 kbit/s; ISDN; coding scheme; computer simulation; digital transmission; hardware architecture; hybrid quantization; motion pictures; motion-compensated prediction; still pictures; video codec; Computer simulation; Decoding; Degradation; Hardware; Low pass filters; Proposals; Quantization; Space technology; TV; Video codecs;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
DOI :
10.1109/ISCAS.1988.15541
