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Motion vector estimation based on statistical features of an image frame
Motion vector estimation based on statistical features of an image frame
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机译:基于图像帧统计特征的运动矢量估计
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摘要
A method for estimating motion vectors between a current frame and a reference frame of a video signal wherein the current frame is divided into a plurality of search blocks and the reference frame and is defined to include a plurality of search regions corresponding to the plurality of search blocks, each of the plural search regions having a plurality of candidate blocks. The method includes the steps of calculating horizontal and vertical features of a reference frame based on pixel data of the reference frame; storing the calculated horizontal and vertical features; computing horizontal and vertical features of a kth search block of the plurality of search blocks; comparing the horizontal and vertical features of the kth search block with those of each of the plurality of candidate blocks of the reference frame in a corresponding search region using a computationally-efficient error measure; selecting a candidate block which yields a minimal error measure; and computing a motion vector for the kth search block based on the selected candidate block.
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