DocumentCode :
3421171
Title :
Analysis of redundant-wavelet multihypothesis for motion compensation
Author :
Fowler, James E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Mississippi State Univ., MS, USA
fYear :
2006
fDate :
28-30 March 2006
Firstpage :
352
Lastpage :
361
Abstract :
An analysis is presented that examines multihypothesis motion-compensated video coding using a redundant wavelet transform to produce multiple predictions that are diverse in transform phase. In such redundant-wavelet multihypothesis, the corresponding multiple-phase inverse transform implicitly combines the phase-diverse predictions into a single spatial-domain prediction. The performance advantage of this approach is investigated analytically, invoking the fact that the multiple-phase inverse involves a projection that significantly reduces the power of the noise not captured by the motion model. The analysis predicts that, under the assumption of a simple translational motion model, redundant-wavelet multihypothesis is capable of up to a 7-dB reduction in prediction-error variance over an equivalent single-phase, single-hypothesis approach. Experimental results support the performance advantage for real motion-compensation residuals.
Keywords :
motion compensation; transform coding; video coding; wavelet transforms; motion compensation; multiple-phase inverse transform; phase-diverse predictions; prediction-error variance; redundant wavelet transform; redundant-wavelet multihypothesis; single spatial-domain prediction; video coding; Analysis of variance; Discrete wavelet transforms; Motion analysis; Motion compensation; Noise reduction; Performance analysis; Predictive models; Video coding; Wavelet analysis; Wavelet transforms;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Data Compression Conference, 2006. DCC 2006. Proceedings
ISSN :
1068-0314
Print_ISBN :
0-7695-2545-8
Type :
conf
DOI :
10.1109/DCC.2006.7
Filename :
1607270
Link To Document :
بازگشت