An efficient block matching algorithm for fast motion ESTIMATION USING COMBINED THREE STEP SEARCH...
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Transcript of An efficient block matching algorithm for fast motion ESTIMATION USING COMBINED THREE STEP SEARCH...
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Presented BySantosh Kumar Chhotray
National Institute of Technology, Durgapur
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Introduction
Video Compression Process
Block Matching Algorithms
Problem Definition
Proposed Algorithm
Simulation Result
Conclusion
References
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Why Block Matching Algorithm?
Factors affecting motion estimation
Object Movement
Environment movement
Video Compression Process
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Exhaustive Search
Three Step Search
Four Step Search
Diamond Search
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Modified Three Step Search
1. Case-1:Search at centre
2. Case-2:Search at corner
3. Case-3:Search at axis
Sub_case-1:Search at corner
Sub_case-2Search at axis
Search for local minima
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Case-1:Best possible search
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Case-2:Search at corners
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Case-3:Diamond Search initiated
Sub_case-1: Search at corner
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Case-3:Diamond Search
Sub_case-2: Search at axis
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Search for local minima
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Moderate PSNR value
Reduced computational time
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[1] Shilpa P. Meher and Sanjay Talbar, ―Fast motion estimation using modified orthogonal search algorithm for video compression‖, Springer Journal ,SIViP (2010) 4:123–128.
[2] Renxiang Li, Bing Zeng, and Ming L. Liou, ―A New Three-Step Search Algorithm for Block Motion Estimation‖, IEEE Trans. Circuits And Systems For Video Technology, vol 4., no. 4, pp. 438-442, August 1994
[3] Jiang li et. al. ―Bi-level video: video communication at very low bit rates‖. original work of Microsoft research china,MM01,pp.392-401,Ottawa,Canada.2001
[4] Anil Kishore Saxena, ,"Rate Optimal Motion Estimation and Compensation in Transform Domain",ABV-IIITM Gwalior, February, 2005
[5] Amit k. Pandit, Sekhar Verma,G.S Tomar,Dheeraj Kannoujia,"Fastmotion estimation using modified new block matching algorithm:MTSSDS for efficient video compression in mobile domain",CICN,Nov, 2011
[6] V.Argyriou and T.Vlachos, ―using gradient correlation for sub-pixel motion estimation of video sequence‖ in Proc2005, july2005, pp.1432-1435
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[7] Shan Zhu, and Kai-Kuang Ma, ― A New Diamond Search Algorithm for Fast Block-Matching Motion Estimation‖, IEEE Trans. Image Processing, vol 9, no. 2, pp. 287-290, February 2000
[8] Yao Nie, and Kai-Kuang Ma, ―Adaptive Rood Pattern Search for Fast Block-Matching Motion Estimation‖, IEEE Trans. Image Processing,vol 11, no. 12, pp. 1442-1448, December 2002
[9] Chun-Ho Cheung, and Lai-Man Po, ―A Novel Small Cross-Diamond Search Algorithm for Fast Video Coding and Video Conferencing Applications‖, Proc. IEEE ICIP, September 2002
[10] Iain E. G. Richardson, Video Codec Design, West Sussex: John Wiley & Sons Ltd., 2002, Ch. 4, 5, & 6
[11] C. W. Lam, L. M. Po and C. H. Cheung, "A New Cross-Diamond Search Algorithm for Fast Block Matching Motion Estimation", Proceeding of 2003 IEEE International Conference on Neural Networks and Signal Processing, pp. 1262-1265, Dec. 2003, Nanjing, China
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