Dynamic quantization method for video encoding
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United States of America Patent
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Issued Date -
Mar 5, 2015
app pub date -
Apr 11, 2013
filing date -
Apr 16, 2012
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Abandoned
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Abstract
The invention relates to a method for dynamic quantization of an image stream including transformed blocks, the method comprising a step for establishing a relationship (V12, V10, V20) between at least one temporal predictive encoding source block (330, 323) of a first image (B1, P2) and one or more reference blocks (311, 312, 313, 314, 316, 321, 322, 323, 324) belonging to other images (I0, P2), the method comprising, for at least one of said transformed blocks, a step of quantization of said block wherein the level of quantization applied to this block is chosen (402) at least partly as a function of the relationship or relationships (V12, V10, V20) established between this block and blocks belonging to other images. The invention applies notably to the improvement of video compression in order to improve the visual rendition of encoded videos.
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