A Study on Preconditioning Multiwavelet Systems for Image Compression
WAA '01 Proceedings of the Second International Conference on Wavelet Analysis and Its Applications
A multivariate thresholding technique for image denoising using multiwavelets
EURASIP Journal on Applied Signal Processing
Generalized interpolating refinable function vectors
Journal of Computational and Applied Mathematics
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This paper considers the classical sampling theorem in multiresolution spaces with scaling functions as interpolants. As discussed by Xia and Zhang (1993), for an orthogonal scaling function to support such a sampling theorem, the scaling function must be cardinal (interpolating). They also showed that the only orthogonal scaling function that is both cardinal and of compact support is the Haar function, which is not continuous. This paper addresses the same question, but in the multiwavelet context, where the situation is different. This paper presents the construction of compactly supported orthogonal multiscaling functions that are continuously differentiable and cardinal. The scaling functions thereby support a Shannon-like sampling theorem. Such wavelet bases are appealing because the initialization of the discrete wavelet transform (prefiltering) is the identity operator