首先利用灰度投影法得到相邻两幅图像的平移量，在此基础上再利用块匹配算法进行分块处理。
First, we calculate the translation between two images by gray projection algorithm, then we use the block-matching algorithm in the divided blocks.
此判别法表明，相邻编码帧宏块条码率的频域互相关能够有效反映图像活动性变化的特点。
The correlation of adjacent slices bitrates in frequency domain can effectively reflect the activity of the motion pictures.
本文给出了一种基于宏块的差图像直方图法，并根据图像复杂度在编码单元之间合理分配比较率。
First of all, a macroblock-based histogram of difference is introduced, and bits are allocated rationally among coding units according to image complexities.
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