增强视频镜头边界检测鲁棒性算法的研究

为有效避免闪光和字幕等因素对镜头边界检测造成的影响,提高视烦镜头边界检测的查准率,根据镜头转换的特点和颜色空间的特征,选取YUV颜色空间,对亮度信息进行分析.采用改进的直方图分块加权法计算视频帧的帧间差,结合其变化规律,将全局阈值和自适应阈值相结合,对突变检测加以控制,并依据视频中闪光具有的特性,检测出闪光序列,使其不参与自适应阈值的计算,提高阈值的准确度,从而增强镜头检测的鲁棒性.

Research on improving robustness of shot boundary detection algorithm

To effectively avoid flash and subtitles and other factors on the impacts of shot boundary detection,and improve precision rate,according to characteristics of lens conversion and features of color space,YUV color space is selected to analyze brightness information,and frame difference with a improved method named histogram partitioned weighted algorithm is calculated.Based on the frame changing,global and self-adaptive threshold is combined to control the process of abrupt detection,and according to featur...