A Realization Of MC/DCT By Video Signal Processors

Yasuhiro Kosugi; Kiyoshi Sakai; Takahiro Hosokawa; Kiichi Matsuda

doi:10.1117/12.969038

25 October 1988 A Realization Of MC/DCT By Video Signal Processors

Yasuhiro Kosugi, Kiyoshi Sakai, Takahiro Hosokawa, Kiichi Matsuda

Proceedings Volume 1001, Visual Communications and Image Processing '88: Third in a Series; (1988) https://doi.org/10.1117/12.969038
Event: Visual Communications and Image Processing III, 1988, Cambridge, MA, United States

Abstract

One type of video signal processors is introduced in this paper, for which multi-processor configuration and required operations are studied. The hybrid coding scheme of MC/DCT is noted as an algorithm of high efficiency for low bit rate coding. But it has a problem that the decoded pictures of receiver are spoilt if the calculation types of inverse-DCT are not identical in transmitter and receiver. So two approaches of DC coefficient separation and conversion of the transfer range on the block by block basis are taken to solve this IDCT mismatch problem by improving the precision of IDCT calculation. To decide the transfer range, three methods are studied. The computer simulation is done to prove the performance of these methods, and the application of the processor is also studied to each method.

Citation Download Citation

Yasuhiro Kosugi, Kiyoshi Sakai, Takahiro Hosokawa, and Kiichi Matsuda "A Realization Of MC/DCT By Video Signal Processors", Proc. SPIE 1001, Visual Communications and Image Processing '88: Third in a Series, (25 October 1988); https://doi.org/10.1117/12.969038

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