Color video data processing

Details Color video data processing Color video data processing

1991-12-24

1993-08-17

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358133, 358426, 375122, 382 56, H04N 713

Patent

active

052373975

ABSTRACT:
A method for determining if uncompressed color video data was previously compressed and decompressed. Each block of color video data is examined to determine if the block was previously compressed with a predetermined compression algorithm that for example, selected fewer colors than were present in the original data. If it is determined that such compression has previously occurred, on recompression, a different algorithm is used to prevent introduction of color distortions.

REFERENCES:
patent: 5046119 (1991-09-01), Hoffert
patent: 5047853 (1991-09-01), Hoffert
patent: 5164819 (1992-11-01), Music

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