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Adaptive entropy coding in adaptive quantization framework for video signal coding systems and processes
Adaptive entropy coding in adaptive quantization framework for video signal coding systems and processes
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机译:视频信号编码系统和过程的自适应量化框架中的自适应熵编码
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摘要
A compression system and process include adaptive quantization for selection of one quantizer, for each video frame or frame portion, from a group of quantizers, where each quantizer is a set of predefined quantizer values, and coding of the quantized values using a common entropy coding table for all quantizers, or a separate entropy coding table for each quantizer. The entropy coding tables are obtained during a training procedure. The selection of the quantizer is based on a formula which takes into account the distortion and bit rate characteristics of each quantizer. A similar formula, based on the distortion and bit rate characteristics, is used to select the particular quantizer value within the chosen quantizer for each video signal value being coded.
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