Method and apparatus for improved video coding

Television – Bandwidth reduction system – Data rate reduction

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348407, 348420, H04N 1102

Patent

active

059737387

ABSTRACT:
The present invention includes a video encoder optimized so as to be implemented using general purpose DSPs or as software executable on a general purpose microprocessor. The present invention includes a modified motion detector module (50) which classifies blocks in the currently processing image as moving or stationary. Blocks classified as moving are then processed by an modified motion compensation module (52) which uses a center-biased orthogonal searching procedure to match the block with a previously processed image. A zero block detector module (54) determines whether the block will generate a zero-valued block after being processed by a transform module 18 and a quantization module 20. If a zero-valued block is predicted, the transformation module 18 and the quantization module 20 are bypassed.

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"Video Coding for Narrow Telecommunication Channels at, 64 kbit/s", International Union, Draft H.263, Apr. 7, 1995, pp. 1-51.

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