Naslov
Adaptive edge-preserving denoising by point-wise wavelet basis selection

Autori
Tomić, Mladen ; Seršić, Damir

Izvornik
IET signal processing (1751-9675) 6 (2012), 1; 1-7

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
adaptive lifting scheme ; adaptive wavelet transform ; ICI rule ; signal denoising ; edge-preserving denoising

Sažetak
Wavelet transforms found widespread application in signal denoising. Many adaptive algorithms were proposed to improve their performance, especially about edges in a signal. In this paper, we propose a novel denoising method based on adaptive edge-preserving lifting scheme – ICI-EPL. By incorporating the statistical method of intersection of confidence intervals rule into the lifting scheme, we are able to select the most appropriate wavelet on a point-by-point basis. The resulting transform adapts very well to local signal properties and significantly improves denoising performance. Simulations on various signal classes show that the ICI-EPL in most cases easily outperforms other considered transforms, with the greatest improvement being about edges in a signal. Achieved results bring confidence that the ICI-EPL can be used to improve performance in a variety of denoising applications.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Računarstvo

POVEZANOST RADA