Naslov
Filter Comparison in Wavelet Transform of Still Images

Autori
Grgić, Mislav ; Ravnjak, Mario ; Zovko-Cihlar, Branka

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the IEEE International Symposium on Industrial Electronics (ISIE'99) / - Piscataway (NJ) : IEEE Service Center, 1999, 105-110

ISBN
0-7803-5662-4

Skup
IEEE International Symposium on Industrial Electronics

Mjesto i datum
Bled, Slovenija, 12.07.1999. - 16.07.1999

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
image coding; wavelet transform; filter comparison; subjective picture quality; objective picture quality; JPEG

Sažetak
This paper discusses the features of wavelet filters in compression of still images and characteristic that they show for various image content and size. The aim of this work is to create a palette of functions (filters) for implementation of wavelet in still image processing and to emphasize the advantage of this transformation relating to today's methods. Filters taken in the test are some of the most used: Haar filter (as the basis), orthogonal Daubechies' and Battle-Lemarie filters such are Least Asymmetric, Shannon and Coiflet, and symmetric Biorthogonal filter. All these filters give various performances for images of different content. 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.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA