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Adaptive entropy - coding in the context of an adaptive quantization for video signal coding systems and - the method
Adaptive entropy - coding in the context of an adaptive quantization for video signal coding systems and - the method
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机译:用于视频信号编码系统的自适应量化上下文中的自适应熵编码和方法
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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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