NDLI: A non-iterative motion vector based global motion estimation algorithm

Content Provider	IEEE Xplore Digital Library
Author	Yeping Su Ming-Ting Sun
Copyright Year	2004
Description	Author affiliation: Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA (Yeping Su; Ming-Ting Sun)
Abstract	Global motion compensation (GMC) is a coding tool introduced in MPEG-4 advanced simple profile (ASP); it can improve the coding efficiency on video sequences with global motion. Conventional pixel-domain iterative global motion estimation (GME) algorithms for estimating the perspective transform model parameters are very computationally demanding, and thus its applicability is restricted. A fast non-iterative GME algorithm is proposed for estimating the perspective transform global motion parameters from the motion vectors (MV) obtained from the block matching process. The proposed algorithm first fits multiple global motion models from groups of input MVs, then, a robust estimate is formed by a histogram-based postprocessing. Simulation results show the proposed algorithm can achieve superior coding performance while using much fewer computations compared to the iterative approaches.
Starting Page	703
Ending Page	706
File Size	243141
Page Count	4
File Format	PDF
ISBN	0780386035
DOI	10.1109/ICME.2004.1394289
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-27
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Motion estimation Iterative algorithms MPEG 4 Standard Noise robustness Application specific processors Video sequences Computational modeling Video compression Sun Motion compensation
Content Type	Text
Resource Type	Article

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