Towards global design of orthogonal filter banks and wavelets
نویسندگان
چکیده
منابع مشابه
Orthogonal complex filter banks and wavelets: some properties and design
Recent wavelet research has primarily focused on real-valued wavelet bases. However, complex wavelet bases offer a number of potential advantageous properties. For example, it has been recently suggested that the complex Daubechies wavelet can be made symmetric. However, these papers always imply that if the complex basis has a symmetry property, then it must exhibit linear phase as well. In th...
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Complex wavelet transforms offer the opportunity to perform directional and coherent processing based on the local magnitude and phase of signals and images. Although demising, segmentation, and image enhancement are significantly improved using complex wavelets, the redundancy of most current transforms hinders their application in compression and related problems. In this paper we introduce a...
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Wavelets, filter banks and multiresolution signal analysis, have been used independently in the fields of applied mathematics, computer vision and signal processing. It is interesting to note that they performed similar functions in different fields. It is recently, that they converged to form a single theory. In the paper, it is shown that the fundamental idea was the same in all the fields i....
متن کاملX.-P. ZHANG ETAL, ORTHOGONAL COMPLEX FILTER BANKS AND WAVELETS 1 Orthogonal Complex Filter Banks and Wavelets: Some Properties and Design
Recent wavelet research has primarily focused on real-valued wavelet bases. However, complex wavelet bases ooer a number of potential advantageous properties. For example, it has been recently suggested 1], 2] that the complex Daubechies wavelet can be made symmetric. However, these papers always imply that if the complex basis has a symmetry property then it must exhibit linear phase as well. ...
متن کاملTwo-dimensional Linear Phase Orthogonal Filter-banks and Wavelets
Two-dimensional compactly supported, orthogonal wavelets and lter-banks having linear phase are presented. Two cases are discussed, wavelets with twofold symmetry (centrosymmetric), and wavelets with four-fold symmetry that are symmetric (or anti-symmetric) about the vertical and horizontal axes. We show that imposing the requirement of linear phase in the case of factorable wavelets, imposes a...
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ژورنال
عنوان ژورنال: Canadian Journal of Electrical and Computer Engineering
سال: 2009
ISSN: 0840-8688
DOI: 10.1109/cjece.2009.5599421