Recovery of luminance and chrominance information from an...

Details Recovery of luminance and chrominance information from an... Recovery of luminance and chrominance information from an...

H - Electricity

04

N

350/57

H04N 9/78 (2006.01)

Patent

CA 1317024

- 26 - Abstract of the Disclosure An apparatus and method for decoding an encoded video signal combs a two dimensional array of pixels from a single field of the encoded video signal according to selected weighting factors to obtain a weighted average chrominance value. The weighted average chrominance value is subtracted from the encoded value to obtain an initial luminance value. The initial luminance value is corrected for residual chrominance errors that exist at edges in the picture represented by the encoded video signal. The luminance correction is based upon the chrominance difference across the edge and upon the orientation of the edge. The corrected luminance value may then be subtracted from the corresponding encoded video value to obtain a corrected chrominance value.

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