Optimization of Filter Parameters in Wavelet Image Compression (CROSBI ID 473605)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Ravnjak, Mario ; Grgić, Mislav ; Kos, Tomislav
engleski
Optimization of Filter Parameters in Wavelet Image Compression
The aim of this work is to create a set of functions (filters) for implementation of wavelets in still image processing and to emphasize the advantage of this transformation relating to today's methods such is DCT. Here are given the samples and comparison of the most used filters and also comparison of quality for different image sizes. Filters taken in this test are: Haar filter (as the basis), orthogonal Daubechies' and Battle-Lemarie filters such is Least Asymmetric, Shannon and Coiflet, and symmetric Biorthogonal filter. Objective and subjective picture quality characteristics of images coded using wavelet transform with different filters are given. The comparison between JPEG coded picture and the same picture coded with wavelet transform is given. For higher compression ratios it is shown that wavelet transform has better S/N than JPEG.
Image Compression; Wavelets; PSNR; JPEG
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Podaci o prilogu
201-204-x.
1999.
objavljeno
Podaci o matičnoj publikaciji
Proceedings IWSSIP'99 6th International Workshop on Systems, Signals and Image Processing
Polec, Jaroslav ; Podhradsky, Pavol ; Rozinaj, Gregor
Bratislava: Slovak Telecommunications Users Group in FABER
Podaci o skupu
IWSSIP'99 6th International Workshop on Systems, Signals and Image Processing
predavanje
02.06.1999-04.06.1999
Bratislava, Slovačka