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Fast Sub-pixel Precision Variable Block Size Motion Estimation

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/39747

Title: Fast Sub-pixel Precision Variable Block Size Motion Estimation
Authors: Zhang, Ying Browse this author
Siu, Wan-Chi Browse this author
Shen, Tingzhi Browse this author
Keywords: Video Coding
Motion estimation
Motion Vector
Variable Block Size
Fast Block Type Decision
Issue Date: 4-Oct-2009
Publisher: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference, International Organizing Committee
Journal Title: Proceedings : APSIPA ASC 2009 : Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference
Start Page: 465
End Page: 468
Abstract: Fast sub-pixel precision variable block size motion estimation is a key issue for real-time application of the H.264. Many fast schemes have been proposed for fast variable block size sub-pixel motion estimation. Most of them are based on the analysis of the current frame. In this paper, we propose a new way to classify macroblocks of the current frame making use of the statistical information of the classified block types and motion activities of the previous frame, and the motion activities of the current frame. This forms a new and comprehensive scheme for fast variable block size motion estimation with sub-pixel refinement. With this prior knowledge, we can make decision on early rejection of sub-partition modes and early termination to skip candidate checking points. The new algorithm is able to alleviate substantially the computational effort of sub-pixel motion estimation. Extensive experimental work has been done, results of which show that our approach gives a speedup of 5 times over that of the fast algorithm in JM and a similar peak signal-to-noise ratio (PSNR) as the full search.
Description: APSIPA ASC 2009: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference. 4-7 October 2009. Sapporo, Japan. Poster session: Image, Video, and Multimedia Signal Processing 2 (6 October 2009).
Conference Name: APSIPA ASC 2009: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference
2009年アジア太平洋信号情報処理連合学会アニュアルサミット・国際会議
Conference Place: Sapporo
Type: proceedings
URI: http://hdl.handle.net/2115/39747
Appears in Collections:北海道大学サステナビリティ・ウィーク2009 (Sustainability Weeks 2009) > 2009年アジア太平洋信号情報処理連合学会アニュアルサミット・国際会議 (2009 APSIPA Annual Summit and Conference)

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