This function calculate block motion vectors (with integer pel accuracy), using hierarchical block matching algorithm. ％An example of main function calling this function is "MEMBA", which can be entered on the command window. ％The function also u

本文提出一种基于H．264低比特率视频流的半脆弱盲水印方法，通过在H．264特有的的帧内预 测和运动向量预测中分别嵌入鲁棒水印和脆弱水印，达到版权保护和内容完整性认证的双重目的．通过在嵌入强 度和预测模式选择的拉格朗日乘子中引入H．264量化因子，增强了水印对重量化编码的抵抗力，取得更好的率 失真平衡，减小水印嵌入对视频流比特率的影响．该算法可以实现水印的快速嵌入提取，满足视频实时处理的要 求，实验结果证明了该算法的有效性．-A novel semi—fragile blind

一种基于秘密共享与运动矢量的视频水印算法A motion vector based on secret sharing and video watermarking algorithm-A motion vector based on secret sharing and video watermarking algorithm