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提出一种建立在多分辨分析小波时一频二维变换上的改进型零树编码方案(Improved Zerotree Encoding)。首先给出了小波变换的机理,然后探讨了滤波器效应在变换中的影响,并给出了解决办法,接着提出了一种改进型零树编码方案,获得了满意的结果。
This paper presents an improved Zerotree Encoding based on one-dimensional two-dimensional transform in multi-resolution wavelet analysis. Firstly, the mechanism of wavelet transform is given. Then the influence of filter effect in the transform is discussed, and the solution is given. Then an improved zerotree coding scheme is proposed and satisfactory results are obtained.