Encoding images using block-based macroblock-level statistics

Details Encoding images using block-based macroblock-level statistics Encoding images using block-based macroblock-level statistics

1995-10-18

1998-11-03

Trammell, James P.

Television

Special applications

Simulator

348398, H04N 1415

Patent

active

058322345

ABSTRACT:
Block-level statistical measures are generated and then used to generate macroblock-level statistical measures, which are in turn used to determine how to encode the macroblocks of the image. In a preferred embodiment, a macroblock-level intra-SAD measure is generated by summing four block-level intra-SAD measures generated from the four blocks of the macroblock. The macroblock-level intra-SAD measure is then used to determine whether to encode the macroblock using intraframe encoding or interframe encoding. Basing macroblock-level statistics on block-level measures can provide a more accurate prediction as to how the macroblock would be encoded using intraframe encoding techniques.

REFERENCES:
patent: 5210605 (1993-05-01), Zaccarin et al.
patent: 5398068 (1995-03-01), Liu et al.
patent: 5585944 (1996-12-01), Rodriguez

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