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
A Fast Fractal Video Coding Algorithm Using Cross-Hexagon Search for Block Motion Estimation
TL;DR: Experimental results indicate that the proposed algorithm spends less encoding time and achieves higher compression ratio and compression quality compared with the traditional CPM/NCIM method.
Block-Matching Algorithm Based on Dynamic Search Window Adjustment
TL;DR: Experimental results show that the proposed Dynamic search window adjustment for block-matching algorithm based on the block similarity to overcome the computational complexity of full search BMA has good performance in terms of the number of matching blocks, and sum of absolute error for each block.
Proceedings ArticleDOI
Four-step genetic search for block motion estimation
TL;DR: A four-step genetic search algorithm is proposed for the block matching algorithm (BMA) and the simulation result shows the proposed method has a similar performance to full-search (FS) in terms of the MSE.
Journal ArticleDOI
A New Survey on Block Matching Algorithms in Video Coding
L.C. Manikandan,R. K. Selvakumar +1 more
TL;DR: This paper is a survey of the existing block matching algorithms used for motion estimation in video coding and aims to provide the succeeding researchers with some constructive information in design of the fast motion estimation (ME) algorithms.
Proceedings ArticleDOI
Spatio-temporal correlation based fast motion estimation algorithm for MPEG-2
K. Ramkishor,S. Krishna +1 more
TL;DR: A fast motion estimation algorithm having computational complexity independent of search range is presented for MPEG-2 video encoding and yields good tradeoff between motion estimation distortion and number of computations.
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.