Effective rate control for video encoding and transcoding
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United States of America Patent
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May 14, 2013
Grant Date -
May 3, 2007
app pub date -
Oct 27, 2006
filing date -
Oct 28, 2005
priority date (Note) -
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Abstract
The quantization factor for each block of pixels in an image or video encoding or transcoding method is determined. The blocks of pixels are classified according to predefined criteria and the blocks are processed according to the resulting classification. The predefined criteria include, for example, anticipated characteristics of the blocks after quantization, such as the transform coefficients after quantization and/or the total number of non-zero transform coefficients.
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