Improved parabolic prediction-based fractional search for H.264/AVC video coding

NCUIR > College of Electrical Engineering & Computer Science > Graduate Institute of Communication Engineering > journal & Dissertation > Item 987654321/29078

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/29078

Title:	Improved parabolic prediction-based fractional search for H.264/AVC video coding
Authors:	Lin,Y;Wang,YC
Contributors:	通訊工程研究所
Keywords:	BLOCK MOTION ESTIMATION;ALGORITHM
Date:	2009
Issue Date:	2010-06-29 20:12:46 (UTC+8)
Publisher:	中央大學
Abstract:	In this study, the authors propose an efficient fractional pixel search algorithm for H.264/AVC video coding to reduce the computational complexity in half/quarter-pixel motion estimation. A prediction for the optimal motion vector is derived under the assumption that the sum of absolute transform differences error surface is a symmetric parabolic function. With the optimal region, a decision rule for half-pixel search is proposed. The experimental result shows that approximately two search points are required. Based on the half-pixel search, a hierarchical quarter-pixel search is described and an extra three search points, on average, are consumed for each quarter-pixel search. Experimental results show that significant reduction in computation can be achieved, while maintaining high coding efficiency.
Relation:	IET IMAGE PROCESSING
Appears in Collections:	[Graduate Institute of Communication Engineering] journal & Dissertation

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