Method of and apparatus for lossless video encoding and...

Image analysis – Image compression or coding – Interframe coding

Reexamination Certificate

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Reexamination Certificate

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07738714

ABSTRACT:
Provided are a method of and apparatus for lossless video encoding and decoding, in which a differential residual block generated by calculating a difference between pixels of a residual block resulting from interprediction is encoded, thereby improving the compression rate. The method of lossless video encoding includes performing interprediction between a reference frame and a current frame in units of a predetermined-size block to generate a predicted block of a current block to be encoded, generating a residual block composed of residual signals corresponding to differences between pixels of the predicted block and the current block, calculating differences between the residual signals of the residual block in a predetermined direction and generating a differential residual block based on the calculated differences, and performing entropy-encoding on the differential residual block.

REFERENCES:
patent: 6606414 (2003-08-01), Pandel et al.
patent: 7577305 (2009-08-01), Srinivasan
patent: 2004/0151247 (2004-08-01), Sanson et al.
patent: 2005/0013370 (2005-01-01), Kim et al.
patent: 2 339 989 (2000-02-01), None
patent: 2001-077700 (2001-03-01), None
patent: 2001-094995 (2001-04-01), None
patent: 10-2005-0009216 (2005-01-01), None

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