Motion estimation is the key to video encoding technology, its basic principle is the use of the adjacent time frame relevant, through the forecast period to reduce redundancy. In the actual code, in order to save bit rate and does not transfer all the data of each frame, but the use of motion estimation for each frame obtained with the prediction of the difference between the reference frame. Motion estimation more accurate, more closer to the margin and the distribution of zero, the smaller the energy difference between blocks, after transform, quantization and entropy coding of the code produced by the bit stream bit rate is less. Therefore, the motion estimation search accuracy of the direct impact on the performance of the compression coding.

运动估计源码
............\运动估计方法比较
............\................\Debug
............\................\inf.h
............\................\main.cpp
............\................\zhang.dsp
............\................\zhang.dsw
............\................\zhang.ncb
............\................\zhang.opt
............\................\zhang.plg
............\................\说明.txt

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