关键词: 摄像机跟踪, 摄像机标定, 特征块, 随机统计, 投影变换

Abstract: This paper presents a camera tracking algorithm based on the statistics of feature blocks，it can be used to track the movement of camera in video files.First，spilling N random points in the region of video，finding out the block that having maximal differences of color nearby the random point.Then the authors analyzes adjacent frame to find the new position of the feature block that best matched.According to the movement of all blocks，the authors seek the mean and eliminate the blocks which having excessive variance of movement，using the remaining blocks to do the statistics.Last，the authors figures out the parameters of linear transformation equation by the Least-squares method.Experiments show that the algorithm achieves more accurate and robustness tracking effect with various types of video files in ordinary PC.

Key words: camera tracking, camera calibration, feature blocks, random statistic, projection transform