Naslov
Lossy Image Reconstruction Using Adaptive Wavelet Filter Bank

Autori
Vrankić, Miroslav ; Seršić, Damir ; Štajduhar, Ivan

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

Izvornik
Proceedings of the Fifth IASTED International Conference on Signal and Image Processing / Hamza, M. H. - Anaheim : Calgary : Zurich : ACTA Press, 2003, 245-248

Skup
IASTED International Conference on Signal and Image Processing

Mjesto i datum
Honolulu (HI), Sjedinjene Američke Države, 13.08.2003. - 15.08.2003

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
lossy image reconstruction; wavelets; quincunx interpolating filters; adaptive lifting scheme

Sažetak
In this paper we have used a previously reported adaptive filter bank structure for image decomposition and lossy reconstruction. We used a robust 2D windowed LS (LSW) adaptation algorithm to change the filter parameters and to adapt them to the local image properties. To improve the coding gain of the lossy image compression scheme, quantization of the adapted filter parameters has been explored. We used a CDF-based method followed by an optimization procedure to find the best quantization values. The proposed method was applied to a number of synthetic and real world images. Reconstructed images were perceptually superior, achieving lower square error norm when compared to the well-known fixed wavelet scheme.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Računarstvo

POVEZANOST RADA