Title :
Uniform motion-compensated 5/3 filterbank for subband video coding
Author :
Pau, Grégoire ; Pesquet-Popescu, Béatrice
Author_Institution :
Dept. of Signal & Image Process., ENST, Paris, France
Abstract :
Motion-compensated temporal filtering is an essential ingredient of recently developed wavelet-based scalable video coding schemes. Lifting implementation of these decompositions represents a versatile tool for spatio-temporal optimizations and numerous improvements have thus been proposed. In this paper, we propose an alternative structure for the temporal prediction in the 5/3 filterbank. It significantly reduces the ghosting artefacts in the temporal approximation subband frames, providing a higher quality scalability and improved compression performance, for an equivalent complexity.
Keywords :
channel bank filters; computational complexity; filtering theory; image resolution; motion compensation; motion estimation; optimisation; video coding; wavelet transforms; computational complexity; lifting scheme; motion estimation; motion-compensated filterbank; spatio-temporal optimization; subband video coding; temporal filtering; video compression; wavelet-based scalable video coding scheme; Electronic mail; Filter bank; Filtering; Low pass filters; Motion estimation; Scalability; Video codecs; Video coding; Video sequences; Wavelet transforms;
Conference_Titel :
Image Processing, 2004. ICIP '04. 2004 International Conference on
Print_ISBN :
0-7803-8554-3
DOI :
10.1109/ICIP.2004.1421773