Hybrid open-loop/closed-loop compression of pictures

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United States of America Patent

PATENT NO 9451272
APP PUB NO 20120163450A1
SERIAL NO

13383229

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Abstract

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In a method of video coding, in which a difference is formed between input picture values and picture prediction values and that difference is transforming with a DCT, the picture prediction is formed as: P=(1−c)Pc+CPo where Pc is a closed loop predictor which is restricted to prediction values capable of exact reconstruction in a downstream decoder and Po is a spatial predictor which is not restricted to prediction values capable of exact reconstruction. The factor can vary from zero to unity depending on a variety of parameters.

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Patent Owner(s)

Patent OwnerAddress
BRITISH BROADCASTING CORPORATIONLONDON W1A 1AA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Barrett, James Manchester, GB 13 157
Davies, Thomas Guildford, GB 20 76

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