The invention discloses a method for inverse quantization coefficient, determine first transform coefficients set corresponding to the pending unit size by division of information, then according to the processing unit in accordance with the size of the first preset quantization algorithm to determine first transform coefficient sets the adjustment factor, the algorithm makes the first preset quantization and pending presentation unit size reduction the relationship between regulatory factors, regulatory factors in accordance with the second preset algorithm for inverse quantization of transform coefficients first transform coefficients using the quantization. The invention discloses a method for inverse quantization transform coefficients based on a decoding device according to the unit size for adaptive processing unit to determine the quantization first transform coefficient sets the adjustment factor, followed by quantitative determined factors regulating the transform coefficients first transform coefficients in inverse quantization processing, due to the need to carry the quantization step adjustment information transmission encoding device stream, so it can improve the encoding efficiency. The invention also discloses a corresponding device and a decoding device.
【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请，说明书已公开。
【技术保护点】
PCT国内申请，权利要求书已公开。
【技术特征摘要】
【国外来华专利技术】PCT国内申请，...
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