Download e-book for iPad: Wavelet Analysis and Its Applications: Second International by John Daugman (auth.), Yuan Y. Tang, Pong C. Yuen, Chun-hung

By John Daugman (auth.), Yuan Y. Tang, Pong C. Yuen, Chun-hung Li, Victor Wickerhauser (eds.)

ISBN-10: 3540430342

ISBN-13: 9783540430346

This publication constitutes the refereed lawsuits of the second one overseas convention on Wavelet research and Its purposes, WAA 2001, held in Hong Kong, China in December 2001. The 24 revised complete papers and 27 revised brief papers awarded have been rigorously reviewed and chosen from a complete of sixty seven complete paper submissions. The publication bargains topical sections on photograph compression and coding, video coding and processing, idea, snapshot processing, sign processing, and platforms and purposes.

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Extra resources for Wavelet Analysis and Its Applications: Second International Conference, WAA 2001 Hong Kong, China, December 18–20, 2001 Proceedings

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The interpolation postfilter and prefilter are formulated, which are capable to provide a better approximate image at each coarser resolution level. A design process is given to obtain both filters having compact supports, if exist. Image compression performances of some multiwavelet systems are studied in comparison to those of single wavelet systems. 1 Nonorthogonal Multiwavelet Subspaces Let us define a multiresolution analysis of L2 (R) generated by several scaling functions, with an increasing sequence of function subspaces {Vj }j∈Z in L2 (R): {0} ⊂ .

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Then the reconstruction formula can be rewritten in the Z-transform domain as cj (z) = 2 HT (z)U2 cj−1 (z) + GT (z)U2 dj−1 (z) (24) The decomposition and reconstruction systems implemented by multiwavelet filterbanks are shown in Figure 3, where the system (a) is the exact implementation of our equations derived. If we take reverse indexing for all filters, we have the system (b), and the multiwavelet decomposition formulas become ˜ = D2 H(z)c j (z), ˜ dj−1 (z) = D2 G(z)c j (z), j−1 (z) (25) (26) A Study on Preconditioning Multiwavelet Systems for Image Compression 27 and the reconstruction formula becomes j (z) = 2 [H∗ (z)U2 j−1 (z) + G∗ (z)U2 j−1 (z)] .

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Wavelet Analysis and Its Applications: Second International Conference, WAA 2001 Hong Kong, China, December 18–20, 2001 Proceedings by John Daugman (auth.), Yuan Y. Tang, Pong C. Yuen, Chun-hung Li, Victor Wickerhauser (eds.)


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