Naslov
Influence of Downsampling Filters Characteristics on Compression Performance in Scalable Video Coding

Autori
Žgaljić, Toni ; Mrak, Marta ; Izquierdo, Ebroul

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

Izvornik
Proceedings of the 4th IET International Conference on Visual Information Engineering, VIE 2007 / - , 2007, CD 1 - CD 6

Skup
4th IET International Conference on Visual Information Engineering, VIE 2007

Mjesto i datum
London, Ujedinjeno Kraljevstvo, 25.07.2007. - 27.07.2007

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
scalable wavelet-based video coding; spatial scalability; downsampling filters

Sažetak
The application of different downsampling filters in video coding directly models visual information at lower resolutions and influences the compression performance of a chosen coding system. In wavelet based scalable video coding the spatial scalability is achieved by the application of wavelets as downsampling filters. However, characteristics of different wavelets influence the performance at targeting spatio-temporal decoding points. In this paper an analysis of different downsampling filter in popular wavelet-based scalable video coding schemes is presented. Evaluation is performed for both intra and inter coding schemes using wavelets and standard downsampling strategies. Based on the obtained results a new concept of inter-resolution prediction is proposed which maximises the performance at all decoding points using combination of standard downsampling filters and wavelet-based coding.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Računarstvo

POVEZANOST RADA