Picture signal coding apparatus

Details Picture signal coding apparatus Picture signal coding apparatus

H - Electricity

04

N

350/33

H04N 7/26 (2006.01)

Patent

CA 1125907

ABSTRACT OF THE DISCLOSURE A frame of a gray-scaled picture is divided into blocks, in each of which the mean brightness of picture elements is used as a threshold value for comparison with each picture element signal to classify it into 0 or 1 according to its magnitude to provide a resolution component. From the resolution component and each pic- ture element signal in the block are calculated two gray components; the resolution component and the two gray components are used as coded outputs for each block.

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