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Flexible Triangle Search Algorithm for Block-Based Motion Estimation

EURASIP Journal on Advances in Signal Processing volume 2007, Article number: 028782 (2006) Cite this article

Abstract

A new fast algorithm for block-based motion estimation, the flexible triangle search (FTS) algorithm, is presented. The algorithm is based on the simplex method of optimization adapted to an integer grid. The proposed algorithm is highly flexible due to its ability to quickly change its search direction and to move towards the target of the search criterion. It is also capable of increasing or decreasing its search step size to allow coarser or finer search. Unlike other fast search algorithms, the FTS can escape from inferior local minima and thus converge to better solutions. The FTS was implemented as part of the H.264 encoder and was compared with several other block matching algorithms. The results obtained show that the FTS can reduce the number of block matching comparisons by around 30–60% with negligible effect on the image quality and compression ratio.

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering, University of Victoria, P.O. Box 3055, Victoria, BC, V8W 3P6, Canada

    Mohamed Rehan, Pan Agathoklis & Andreas Antoniou

Authors
  1. Mohamed Rehan
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  2. Pan Agathoklis
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  3. Andreas Antoniou
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Correspondence to Mohamed Rehan.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( https://creativecommons.org/licenses/by/2.0 ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Rehan, M., Agathoklis, P. & Antoniou, A. Flexible Triangle Search Algorithm for Block-Based Motion Estimation. EURASIP J. Adv. Signal Process. 2007, 028782 (2006). https://doi.org/10.1155/2007/28782

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