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摘要：
In [1], Daubechies provided 2-band ＂splitting trick＂ in L2 (R), which was used in the construction of orthogonal wavelet packets. In [2], by generalizing the trick to bidimensional case, Tian Xiongfei and Li Yunzhang constructed bidimensional orthonormal wavelet packets related to the dilation matrix M = [1 1/1 -1] in this paper, a nonorthogonal ＂splitting trick＂ related to M is obtained.
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