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Using quantization bias that accounts for relations between transform bins and quantization bins
Using quantization bias that accounts for relations between transform bins and quantization bins
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机译:使用考虑了转换仓和量化仓之间关系的量化偏差
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摘要
Techniques and tools are described for using quantization bias that accounts for relations between transform bins and quantization bins. The techniques and tools can be used to compensate for mismatch between transform bin boundaries and quantization bin boundaries during quantization. For example, in some embodiments, when a video encoder quantizes the DC coefficients of DC-only blocks, the encoder compensates for mismatches between transform bin boundaries and quantization bin boundaries. In some implementations, the mismatch compensation uses an offset table that accounts for the mismatches. In other embodiments, the encoder uses adjustable thresholds to control quantization bias.
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