Adaptation of a 2-D Nonseparable Wavelet Filter Bank with Variable Number of Zero Moments (CROSBI ID 488753)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Seršić, Damir ; Vrankić, Miroslav
engleski
Adaptation of a 2-D Nonseparable Wavelet Filter Bank with Variable Number of Zero Moments
In this paper, we compare different adaptation criterions of the proposed two dimensional wavelet filter bank with a variable number of zero moments. Twodimensional generalization of the previously reported 1- D algorithm is based on nonseparable quincunx scheme. 2-D filters were designed directly, rather then obtained from 1-D filters using pyramid scheme. Filter banks with more zero moments are better for representing smooth parts of the analyzed signal, while shorter filters are more suitable for edges and singularities. When applied to images, variable zero moment 2-D wavelets result in low ripple on edges and good concentration of wavelet coefficients in smooth parts. We discuss different adaptation algorithms based on the size of adaptation area. Chosen criterion determines decomposition properties and robustness. Results on synthetic and real images are presented.
2D wavelet filter bank; non-separable wavelets; adaptive zero moments
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Podaci o prilogu
257-260-x.
2002.
objavljeno
Podaci o matičnoj publikaciji
A Proceedings of the Second IAESTED International Conference on Visualization, Imaging and Image Processing
Villanueva, J.J.
Anaheim : Calgary : Zurich: ACTA Press
Podaci o skupu
The Second IAESTED International Conference on Visualization, Imaging and Image Processing
predavanje
09.09.2002-12.09.2002
Málaga, Španjolska