Title :
Video Compressed Sensing with Multihypothesis
Author :
Tramel, Eric W. ; Fowler, James E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Geosystems Res. Inst. (GRI) Mississippi State Univ., Starkville, MS, USA
Abstract :
The compressed-sensing recovery of video sequences driven by multihypothesis predictions is considered. Specifically, multihypothesis predictions of the current frame are used to generate a residual in the domain of the compressed-sensing random projections. This residual being typically more compressible than the original frame leads to improved reconstruction quality. To appropriately weight the hypothesis predictions, a Tikhonov regularization to an ill-posed least-squares optimization is proposed. This method is shown to outperform both recovery of the frame independently of the others as well as recovery based on single-hypothesis prediction.
Keywords :
data compression; least squares approximations; video coding; Tikhonov regularization; ill-posed least-squares optimization; multihypothesis prediction; single-hypothesis prediction; video compressed sensing; video sequences; Approximation methods; Computational complexity; Image reconstruction; Optimization; Transforms; Video compression; Video sequences;
Conference_Titel :
Data Compression Conference (DCC), 2011
Conference_Location :
Snowbird, UT
Print_ISBN :
978-1-61284-279-0
DOI :
10.1109/DCC.2011.26