ICIP 2006, Atlanta, GA

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Atlanta Conv. & Vis. Bureau


Technical Program

Paper Detail

Session:Image and Video Coding - I
Time:Tuesday, October 10, 15:00 - 15:20
Presentation: Lecture
Authors: Edson Hung; Universidade de Brasilia 
 Ricardo de Queiroz; Universidade de Brasilia 
 Debargha Mukherjee; Hewlett-Packard Laboratories 
Abstract: In the H.264/AVC video coding standard, motion compensation can be performed by partitioning macroblocks into square or rectangular sub-macroblocks in a quadtree decomposition. This paper studies a motion compensation method using wedges, i.e. partitioning macroblocks or sub-macroblocks into two regions by an arbitrary line segment. This technique allows the shapes of the divided regions to better match the boundaries between moving objects. However, there are a large number of ways to slice a block and searching exhaustively over all of them would be an extremely computer-intensive task. Thus, we propose a fast algorithm which detects the predominant edge orientations within a block in order to pre-select candidate wedge lines. Finally a comparison among macroblock partition methods is performed, which points to the higher performance of the wedge partition method.