Naslov
SVD Block Processing for non-linear image noise filtering

Autori
Devčić, Željko ; Lončarić, Sven

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

Izvornik
Proceedings of the 20th Int'l Conference Information Technology Interfaces / Kalpić, D. - Zagreb, 1998, 371-376

Skup
20th Int'l Conference Information Technology Interfaces

Mjesto i datum
Pula, Hrvatska, 15.06.1998. - 18.06.1998

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
singular value decomposition; image enhancement

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