视频分割中特殊编辑的一种检测算法

AN ALGORITHM FOR SPECIAL EFFECT EDIT DETECTION IN VIDEO PARSING

在现有的编辑以及镜头操作的检测方法中 ,对突然变化的检测相对容易一些 ,而对镜头操作的检测比较困难 .提出了一种在压缩域上 ,对 MPEG流 DCT变换的直流分量沿时间轴形成的 3维数据空间中 ,运动向量随时间累积的分布效果进行分析的方法 ,来对特殊编辑与镜头操作进行检测 .与现有的视频分割方法相比较 ,有较好的对光照度变化。

With the existing shot change and camera operation detection algorithms, abrupt changes are detected fairly well. It is more difficult and challenging to detect gradual changes such as camera operation. In this paper, a novel algorithm for detecting special edit and camera operation is presented. This algorithm works in compressed video flow, using the DC component of the DCT transform, and analyzing the difference accumulation effect in 3 dimensional space along the time axis. Compared with the existing algorithms, it is more robust against light variation and object motion.