Image analysis – Image compression or coding – Interframe coding
Patent
1997-12-22
2000-06-27
Chang, Jon
Image analysis
Image compression or coding
Interframe coding
382238, 348416, G06T 900
Patent
active
060816228
ABSTRACT:
Method and apparatus for encoding digital motion video where a motion vector is formed to describe the translation of a set of picture elements from one picture to another. This is accomplished by calculating a difference or prediction error between a current luminance macroblock and a best match reference luminance macroblock, and between a current chrominance macroblock and a best match reference chrominance macroblock. This is done by selecting a chrominance prediction mode from among a set of chrominance prediction modes. Using the selected chrominance prediction mode, a full or half pel interpolation is calculated and from this a difference or prediction error is calculated between a current chrominance macroblock and a best match reference chrominance macroblock. The required reference chrominance data is fetched, and a chrominance difference or prediction error is calculated. The output is the chrominance difference or prediction error data.
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Carr Jeffery D.
Ngai Agnes Y.
Sutton John M.
Chang Jon
International Business Machines - Corporation
Steinberg, Esq. William H.
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