Rate-Distortion Optimized Embedding
作者： Jin Li , Shawmin Lei
DOI:
关键词: Algorithmic efficiency 、 Algorithm 、 Probability estimation 、 Coding (social sciences) 、 Computer science 、 Mathematical optimization 、 Embedding 、 Bitstream 、 Lookup table 、 Rate distortion
摘要: In this paper, we improve the performance of embedded coder by reorganising its output bitstream in rate-distortion (R-D) sense. proposed optimized embedding (RDE), coding bit is first allocated to coefficient with steepest R-D slope, i.e. biggest distortion decrease per bit. To avoid transmission position coded coefficient, RDE uses expectation slope that can be calculated bits have already been transmitted decoder. also takes advantage probability estimation table QM-coder so calculation just a lookup operation. Extensive experimental results show significantly improves efficiency.
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