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UNQUANTIZATION METHOD, UNQAUNTIZATION APPARATUS, METHOD AND APPARATUS FOR VIDEO DECODING USING THE UNQUANTIZATION METHOD
UNQUANTIZATION METHOD, UNQAUNTIZATION APPARATUS, METHOD AND APPARATUS FOR VIDEO DECODING USING THE UNQUANTIZATION METHOD
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机译:非量化方法,非量化装置,使用非量化方法进行视频解码的方法和装置
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摘要
An inverse quantization method and apparatus, and a video decoding method and apparatus using the method are provided to accurately estimate a restored coefficient by using statistical distribution of quantization level values to improve the picture quality of video frames restored at a decoder. An inverse quantization method inversely quantizes quantization level values generated by quantizing the original value to obtain a restoration value with respect to the original value. The inverse quantization method includes steps of accumulating histogram counts for the quantization level values to update a histogram, estimating a distribution function for the original value on the basis of the histogram, and obtaining the restoration value with respect to the quantization level values from the distribution function.
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