一个获取镜头运动特征的有效算法

一个获取镜头运动特征的有效算法 Efficient Algorithm of Acquiring Shot Motion Features 郑鹏 ZHENG Peng 1 2 first-author 卢金波 LU Jin-bo 1 2 周洞汝 ZHOU Dong-ru 1 2 武汉大学计算机学院 武汉大学计算机学院 School of Computer, Wuhan University School of Computer, Wuhan University 武汉大学计算机学院,湖北,武汉,430072 武汉大学计算机学院,湖北,武汉,430072 提出了一个直接利用MPEG视频中的压缩参数信息,获取镜头运动特征的算法.算法中利用的压缩参数主要有帧类型、宏块类型、DC系数、运动矢量.与已有的算法相比,此算法具有计算成本低,识别率高的特点,能有效地区分镜头运动和溶暗、划出等镜头渐变,具有鲁棒性. We present an algorithm that acquires shot motion features using compressed parameters by MPEG provided. Compressed parameters include type of frame, type of macroblock, DC coefficients, and motion vectors. Compared with the exist algorithms, the algorithm has lower cost of computing and higher recognized ratio, and it can distinguish motion of shot and gradual transition efficiently, such as dissolve and wipe. It is robust against noise and moving objects. 镜头 推拉 摇动 压缩视频 shot zoom pan compressed video TP311.13 国家自然科学基金资助项目（60173045;F020204） 2004-03-01 2021-04-01 3