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An Adaptive Fast Motion Estimation Based on Directional Correlation and Predictive Values in H.264
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  • An Adaptive Fast Motion Estimation Based on Directional Correlation and Predictive Values in H.264
저자명
김정길,Kim. Cheong-Ghil
간행물명
정보통신설비= Journal of information and telecommunication facility engineering
권/호정보
2011년|10권 2호|pp.53-61 (9 pages)
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한국정보통신설비학회
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

This research presents an adaptive fast motion estimation (ME) computation on the stage of uneven multi-hexagon grid search (UMHGS) algorithm included in an unsymmetrical-cross multi-hexagon-grid search (UMHexagonS) in H.264 standard. The proposed adaptive method is based on statistical analysis and previously obtained motion vectors to reduce the computational complexity of ME. For this purpose, the algorithm is decomposed into three processes: skipping, terminating, and reducing search areas. Skipping and terminating are determined by the statistical analysis of the collected minimum SAD (sum of absolute difference) and the search area is constrained by the slope of previously obtained motion vectors. Simulation results show that 13%-23% of ME time can be reduced compared with UMHexagonS, while still maintaining a reasonable PSNR (peak signal-to-noise ratio) and average bitrates.