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13 November 2003 Anisotropic 2D wavelet packets and rectangular tiling: theory and algorithms
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Abstract
We propose a new subspace decomposition scheme called anisotropic wavelet packets which broadens the existing definition of 2-D wavelet packets. By allowing arbitrary order of row and column decompositions, this scheme fully considers the adaptivity, which helps find the best bases to represent an image. We also show that the number of candidate tree structures in the anisotropic case is much larger than isotropic case. The greedy algorithm and double-tree algorithm are then presented and experimental results are shown.
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Dan Xu and Minh N. Do "Anisotropic 2D wavelet packets and rectangular tiling: theory and algorithms", Proc. SPIE 5207, Wavelets: Applications in Signal and Image Processing X, (13 November 2003); https://doi.org/10.1117/12.506601
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