关键词: 数字视频缺陷, 计算机视觉, OpenCV

Abstract: It becomes increasingly important to locate degraded video（video with defects） with the wide application of digital media.For simple form of digital video defects，such as black frame，red，blue and green frame，detection algorithms are proposed.In these algorithms，some typical features，such as mean，Absolute Difference（AD），are used.For the complex video flaw，exactly mosaic，a fast and effective detection algorithm is proposed based on analysis of existing approaches.Two tricks are adopted to speed up the detection：A new template matching strategy and the preprocessing of the edge image.All above defect detection algorithms are implemented based on the OpenCV library，which make the development of the system pleasant and easy.Experiments are carried out and the results show that the proposed algorithm has good performance.

Key words: digital video defect, computer vision, OpenCV