Encoding apparatus in which flat subblocks are identified in blo

Details Encoding apparatus in which flat subblocks are identified in blo Encoding apparatus in which flat subblocks are identified in blo

1994-08-05

1996-04-23

Chin, Tommy P.

Television

Bandwidth reduction system

Data rate reduction

348384, 348390, 348403, H04N 724

Patent

active

055108415

ABSTRACT:
In a picture signal encoding and/or decoding apparatus, respective blocks composing of 8.times.8 pixels are segmented into four subblocks composing of 4.times.4 pixels. A flatness of picture data is judged for every subblock. New picture data is generated by folding flat subblocks indicated with logic 1 and unflat subblocks indicated with logic 0, and then this picture data obtained by folding is discrete cosine transformed. Whereas it is able to high efficient encoding.

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