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Design of Wavelet Filter Banks for Any Dilation Using Extended Laplacian Pyramid Matrices
Youngmi Hur, Sungjoo Kim · 2024-09-12 · via cs.IT updates on arXiv.org

In this paper, we present a new method for designing wavelet filter banks for any dilation matrices and in any dimension. Our approach utilizes extended Laplacian pyramid matrices to achieve this flexibility. By generalizing recent tight wavelet frame construction methods based on the sum of squares representation, we introduce the sum of vanishing products (SVP) condition, which is significantly easier to satisfy. These flexible design methods rely on our main results, which establish the equivalence between the SVP and mixed unitary extension principle conditions. Additionally, we provide illustrative examples to showcase our main findings.

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