DEVICE AND METHOD FOR INTRA-ENCODING IMAGE BLOCKS, STORAGE MEDIUM CARRYING AND USE OF A PROCESSING DEVICE FOR DECODING INTRA-ENCODED IMAGE BLOCKS
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United States of America Patent
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Jul 2, 2015
app pub date -
Sep 4, 2012
filing date -
Oct 4, 2011
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Abstract
Said method comprises using a processing means for quantizing a transform of a residual of an intra-prediction of the image block using a quantization parameter value and encoding the quantized transform, further using a processing means for determining that an already used quantization parameter value and corresponding coding cost are available in a storage means, the already used a quantization parameter value being already used for quantizing of a further image block close resembling the image block or having a same complexity as the image block and using the already used quantization parameter value, the corresponding coding cost and a target bit rate for determining the quantization parameter value. Thus, the quantization parameter value can be determined such that flickering artifacts are avoided.
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