Image coding or decoding device and method involving...

Details Image coding or decoding device and method involving... Image coding or decoding device and method involving...

2011-02-08

2011-02-08

Ishrat, Sherali (Department: 2624)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

07885334

ABSTRACT:
A method and apparatus are provided for coding or decoding an image comprising macro-blocks which are distributed in lines and columns. The processing of at least one given macro-block requires the pre-processing of at least one other macro-block on which said dependent macro-block depends. Moreover, the macro-blocks are processed sequentially line by line or column by column. Processing of the macro-blocks is multithreaded over N processors, N≧2. The image is separated into N vertical bands each comprising a plurality of lines and at least one column of macro-blocks if the macro-block is processed sequentially line by line, or into N horizontal bands each comprising a plurality of columns and at least one line of macro-blocks if the macro-block is processed sequentially column by column. One of the N bands is processed by each processor, and the processing operations performed by the N processors is synchronized.

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P. Kolinummi et al., “Scalable Implementation of H.263 Video Encoder on a Parallel DSP System,” IEEE Internat'l Symposium on Circuits and Systems, May 28-31, 2000, pp. I-551 to I-554.

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