Image analysis – Image compression or coding – Interframe coding
Patent
1996-06-05
1999-10-26
Au, Amelia
Image analysis
Image compression or coding
Interframe coding
382252, G06K 936, G06K 946
Patent
active
059741830
ABSTRACT:
Decoder reconstruction error is estimated so as to provide compensation at the encoder which equalizes the errors over different frames, since the errors created by some frames are lower than those created by other frames. The compensation is provided by means of temporal weighting applied in the form of temporal bands each associated with specific numbered frames within a frame group. The technique can be applied to a logarithmic temporal decimation frame structure in which one frame within a group of 2.sup.n frames is an `I` frame and the remaining frames are `B` frames.
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Au Amelia
Frommer William S.
Johnson Timothy M.
Sony Corporation
Sony United Kingdom Limited
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