Two-measure block classification scheme for encoding video image

Details Two-measure block classification scheme for encoding video image Two-measure block classification scheme for encoding video image

1995-09-29

1998-04-07

Voeltz, Emanuel T.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358539, H04N 141

Patent

active

057375372

ABSTRACT:
Blocks of video frames are classified for encoding, for example, as empty blocks, inter blocks, or intra blocks. This block classification is based on (at least) two statistical measures for each block: a global measure and a local measure. In a preferred embodiment, blocks are classified as empty blocks using an inter sum-of-absolute-differences (SAD) measure (a global measure) and a maximum-absolute-difference (MAD) measure (a local measure). The inter-SAD and MAD measures are generated for each block of the current frame relative to a corresponding reference block of a reference frame. If the inter-SAD and MAD measures are less than specified thresholds, then the block is classified as an empty block for encoding.

REFERENCES:
patent: 5488570 (1996-01-01), Agarwal
patent: 5585944 (1996-12-01), Rodriguez

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