Video coding

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United States of America Patent

PATENT NO 9167257
APP PUB NO 20110019738A1
SERIAL NO

12921538

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Abstract

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Pictures are coded using a coding algorithm with a variable parameter QP so that the quality of the coding varies. First (100), a target value TiMOS is specified for a quality measurement parameter. Then, for each picture (or part of a picture) to be coded, one estimates, independently of the other pictures, a value for the variable parameter QP based on a) the target value for that picture area and b) a masking measure C that depends on the picture content of that picture area. The picture is then coded (112) using the estimated value. The masking measure may be compensated (108, 122) to allow for the effect of the coding quality upon the masking effect.

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Patent Owner(s)

  • BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nilsson, Michael E Ipswich, GB 17 423

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