发明名称 Method and device for indicating quantizer parameters in a video coding system
摘要 A method and device for coding of digital video sequence, wherein an indication of quantization parameter (QP) is provided in the encoded bit-stream for decoding purposes. The QP related information is indicated by introducing a sequence level quantization parameter value SQP. More specifically, instead of coding the absolute values of picture/slice QPs, an indication of the difference DeltaQP between the sequence level quantization parameter SQP and the picture/slice QP is provided. This eliminates the need to transmit a full QP for every picture/slice, and enables a statistically smaller difference value to be transmitted, thus providing a reduction in transmission bit-rate. The difference value is subsequently used in a corresponding decoder to reconstruct the picture/slice QP.
申请公布号 HK1080241(A1) 申请公布日期 2008.11.07
申请号 HK20050112216 申请日期 2005.12.30
申请人 NOKIA CORPORATION 发明人 LAINEMA JANI
分类号 H04N;H04N7/30;G06K;G06T9/00;H03M7/36;H04B;H04N5/00;H04N7/26;H04N7/32;H04N7/50 主分类号 H04N
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