Title :
On the coding gain of separable 2D wavelet filter banks
Author :
Adams, Michael D.
Author_Institution :
Dept. of Elec. & Comp. Eng., Univ. of Victoria, Victoria, BC
Abstract :
It has been observed that filter banks from a certain popular separable 2D wavelet class always appear to have a higher coding gain with respect to a separable image model than with respect to an isotropic one. This behavior is examined in detail and an explanation for it is offered. As it turns out, for such filter banks, it is highly improbable (if not impossible) for the isotropic coding gain to exceed the separable coding gain.
Keywords :
filtering theory; image coding; wavelet transforms; 2D wavelet filter banks; image coding; isotropic coding gain; separable image model; wavelet transforms; Autocorrelation; Channel bank filters; Convolution; Councils; Filter bank; Fourier transforms; Image coding; Sampling methods; Terminology; Wavelet transforms; coding gain; filter banks; image coding; separable/isotropic image models; wavelet transforms;
Conference_Titel :
Image Processing, 2008. ICIP 2008. 15th IEEE International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-1765-0
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2008.4711977
