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Transform Coefficient Dequantization Method and Apparatus, and Decoding Device
Transform Coefficient Dequantization Method and Apparatus, and Decoding Device
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机译:变换系数去量化方法,装置及解码装置
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摘要
A unit size of a to-be-processed unit corresponding to a first transform coefficient set is determined using division information. Then, a quantization regulation factor for the first transform coefficient set is determined according to a first preset algorithm and the unit size of the to-be-processed unit, and with the first preset algorithm, the quantization regulation factor decreases progressively with the size of the to-be-processed unit. Dequantization processing is performed on a transform coefficient in the first transform coefficient set according to a second preset algorithm using the quantization regulation factor. Therefore, a decoding device adaptively determines the quantization regulation factor for the first transform coefficient set according to the unit size of the to-be-processed unit, and then performs dequantization processing on the transform coefficient in the first transform coefficient set using the determined quantization regulation factor.
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