Journal ArticleDOI
A novel four-step search algorithm for fast block motion estimation
Lai-Man Po,Wing-Chung Ma +1 more
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TLDR
Simulation results show that the proposed 4SS performs better than the well-known three- step search and has similar performance to the new three-step search (N3SS) in terms of motion compensation errors.Abstract:
Based on the real world image sequence's characteristic of center-biased motion vector distribution, a new four-step search (4SS) algorithm with center-biased checking point pattern for fast block motion estimation is proposed in this paper. A halfway-stop technique is employed in the new algorithm with searching steps of 2 to 4 and the total number of checking points is varied from 17 to 27. Simulation results show that the proposed 4SS performs better than the well-known three-step search and has similar performance to the new three-step search (N3SS) in terms of motion compensation errors. In addition, the 4SS also reduces the worst-case computational requirement from 33 to 27 search points and the average computational requirement from 21 to 19 search points, as compared with N3SS.read more
Citations
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Journal ArticleDOI
Efficient architecture for global elimination algorithm for H.264 motion estimation
P. Muralidhar,C. B. Ramarao +1 more
TL;DR: Adaptive Global Elimination algorithm has been implemented which reduces the computational complexity of motion estimation algorithm and thus resulted in low power dissipation.
Dissertation
Securing Multi-Layer Communications: A Signal Processing Approach
TL;DR: This dissertation demonstrates that signal processing techniques, along with optimization, scheduling, and beneficial techniques from other related fields of study, can be successfully integrated into security solutions in practical communication systems.
Book ChapterDOI
Accurate Estimation of Motion Vectors Using Active Block Matching
TL;DR: An active block matching algorithm for motion estimation that dynamically determines the search area and the matching metric and can yield very accurate block motion vectors.
Proceedings ArticleDOI
Performance analysis of Orthogonal - Diamond Search algorithm for Motion Estimation
TL;DR: Simulation result show that the proposed Orthogonal-Diamond Search (ODS) can find motion vector with fever number of search points while maintains close performance of video quality with other selected algorithms.
Proceedings ArticleDOI
Fast Motion Estimation using Hexagon-Based Search Pattern in Predictive Search Range
Jui-Chiu Chiang,W.T. Kuo,L.Y. Su +2 more
TL;DR: A fast motion estimation algorithm to further reduce the search points demanded by HEXBS algorithm by exploiting the statistical property of motion vectors of the neighboring blocks to lower the number of selected candidate points on the hexagon endpoints.
References
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Journal ArticleDOI
Displacement Measurement and Its Application in Interframe Image Coding
TL;DR: The motion compensation is applied for analysis and design of a hybrid coding scheme and the results show a factor of two gain at low bit rates.
Journal ArticleDOI
A new three-step search algorithm for block motion estimation
Reoxiang Li,Bing Zeng,M.L. Liou +2 more
TL;DR: Simulation results show that, as compared to TSS, NTSS is much more robust, produces smaller motion compensation errors, and has a very compatible computational complexity.
Journal ArticleDOI
New fast algorithms for the estimation of block motion vectors
Bede Liu,Andre Zaccarin +1 more
TL;DR: Two algorithms for block motion estimation that produce performance similar to that of exhaustive search but with computation reduced by a factor of 8 or 16 are presented.
Journal ArticleDOI
Predictive Coding Based on Efficient Motion Estimation
R. Srinivasan,K. R. Rao +1 more
TL;DR: A computationally simpler and effective method is proposed for estimating motion in a video sequence based on conjugate directions and another simpler technique called the one-at-a-time search, adopted as the basis for further research.