Title :
Video coding by region-based motion compensation and spatio-temporal wavelet transform
Author :
Polzer, Andreas ; Klock, Hansjörg ; Buhrmann, J.M.
Author_Institution :
Rheinische Friedrich-Wilhelms-Univ., Bonn, Germany
Abstract :
We present a low bit-rate video compression system that integrates region-based motion estimation and motion compensation with spatio-temporal wavelet transform coding. The paper focusses on the motion segmentation module, which determines maximum likelihood estimates of region motion parameters employing the expectation-maximization (EM) algorithm and mean field techniques. Preliminary results show the competitiveness of this approach
Keywords :
data compression; image segmentation; maximum likelihood estimation; motion compensation; motion estimation; transform coding; video coding; wavelet transforms; EM algorithm; expectation-maximization algorithm; low bit-rate video compression; maximum likelihood estimation; mean field techniques; motion segmentation module; parameter estimation; region-based motion compensation; region-based motion estimation; spatio-temporal wavelet transform; video coding; wavelet transform coding; Computer vision; Maximum likelihood estimation; Motion compensation; Motion estimation; Motion segmentation; Stochastic processes; Transform coding; Video coding; Video compression; Wavelet transforms;
Conference_Titel :
Image Processing, 1997. Proceedings., International Conference on
Conference_Location :
Santa Barbara, CA
Print_ISBN :
0-8186-8183-7
DOI :
10.1109/ICIP.1997.632149
