Naslov
SVD Block Processing for Non-linear Image Noise Filtering

Autori
Devčić, Željko ; Lončarić, Sven

Izvornik
CIT. Journal of computing and information technology (1330-1136) 7 (1999), 3; 255-259

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

Ključne riječi
image processing; image enhancement; noise filtering; non-linear filtering

Sažetak
A new algorithm for noise filtering, based on non-linear processing of image in blocks, using singular value decomposition (SVD) is presented in this paper. Noise filtering is performed in the domain of singular values and singular vectors. A priori noise variance knowledge is not required, because a singular value-based noise variance estimation is performed in the first phase of the procedure. The non-linear filtering is based on eliminating changes in singular values and singular vectors caused by additive Gaussian white noise. Processing of image in smaller blocks makes SVD-based procedure computationally feasible. Experimental results have demonstrated the validity of the approach.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA