New Perspectives on Image Compression using a Cartoon - Texture Decomposition Model (CROSBI ID 489860)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Šprljan, Nikola ; Izquierdo, Ebroul
engleski
New Perspectives on Image Compression using a Cartoon - Texture Decomposition Model
A new method for multilayered image representation and its application in image compression are presented. The basic idea is to separate an image into two different layers having fundamentally different structures. Non-linear diffusion is used to smooth out image texture in order to obtain a large scale piecewise smooth image representation called "cartoon". The residual part is considered as "pure texture". Since the best approximations of these two structurally different image layers can be realised by different transforms, higher compression ratios are achieved using suitably chosen transforms prior to individual encoding of each layer. Transform basis tailored to each layer are derived from a comprehensive empirical study. Several experiments were conducted to evaluate the performance of the proposed approach. The results show that in most cases the proposed technique achieves objectively slightly better and subjectively superior results than wellestablished image compression algorithms.
multilayered image coding; wavelet transform; piecewise smooth signals; texture
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Podaci o prilogu
359-368-x.
2003.
objavljeno
Podaci o matičnoj publikaciji
PROCEEDINGS EC-VIP-MC 2003
Grgić, Mislav ; Grgić, Sonja
Zagreb: Fakultet elektrotehnike i računarstva Sveučilišta u Zagrebu
Podaci o skupu
4th EURASIP Conference focused on Video/Image Processing and Multimedia Communications
predavanje
02.07.2003-05.07.2003
Zagreb, Hrvatska