DocumentCode :
2162188
Title :
Motion estimation by affine transforms based on codirectionality of movements
Author :
Mohrekesh, M. ; Samavi, S. ; Karimi, N. ; Shirani, S. ; Behnamfar, P.
Author_Institution :
Dept. of Electr. & Comput. Eng., Isfahan Univ. of Technol., Isfahan
fYear :
2009
fDate :
3-6 May 2009
Firstpage :
995
Lastpage :
998
Abstract :
Motion estimation is a critical part of any video coding scheme. Block matching schemes, though being easy to implement, could produce poor results when multiple moving objects exist in one block. In this paper a new mesh-based algorithm is presented which uses affine transforms. The algorithm searches for codirectionality among pixels of a mesh element. When objects pass each other in a scene the superiority of the proposed algorithm is more apparent. The results from implementation of the proposed algorithm show its overall advantage in most instances with respect to comparable algorithms of its class.
Keywords :
affine transforms; image matching; mesh generation; motion estimation; video coding; affine transforms; block matching; mesh-based algorithm; motion estimation; movement codirectionality; video coding scheme; Cameras; Equations; Error correction; Interpolation; Layout; Motion estimation; Shape; Shearing; Video coding; Video sequences; Motion estimation; affine transforms; mesh-based; motion vector; video coding;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical and Computer Engineering, 2009. CCECE '09. Canadian Conference on
Conference_Location :
St. John´s, NL
ISSN :
0840-7789
Print_ISBN :
978-1-4244-3509-8
Electronic_ISBN :
0840-7789
Type :
conf
DOI :
10.1109/CCECE.2009.5090279
Filename :
5090279
Link To Document :
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