A fuzzy search block-matching chip for motion estimation
Integration, the VLSI Journal
Algorithms and DSP implementation of H.264/AVC
ASP-DAC '06 Proceedings of the 2006 Asia and South Pacific Design Automation Conference
IEEE Transactions on Circuits and Systems for Video Technology
IEEE Transactions on Circuits and Systems for Video Technology
Prediction-based directional search for fast block-matching motion estimation
Proceedings of the 2010 Symposium on Information and Communication Technology
Expert Systems with Applications: An International Journal
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Abstract motion estimation plays an important role for the compression of video signals. This paper presents a new prediction search algorithm (PSA) for block motion estimation. The proposed method utilizes the linear weighting of the motion vectors of the three adjacent blocks to obtain a prediction motion vector, namely, the initial search point. Using a 3×3 movable search window, it then searches from the prediction point with a fixed search step size of one until it reaches the boundary of search area or its local minimum point lies in the center of search window. Based on the spatial characteristics of the center-biased distance between a motion vector and the corresponding prediction vector and the temporal correlation of motion vectors, this method can significantly reduce the search times. Simulation results show that the proposed PSA is better than the three-step search algorithm and the four-step search algorithm in terms of MSE with smaller computational requirement