用于视频拷贝检测的，提取关键帧后，进行视频关键帧序列匹配，-For video copy detection, key frame extraction for video key frame sequence matching,

For the detection of sign each frame is analysed. First the image is Converted into gray scale image and then threshold is performed. Then by using blob analysis portion of red part is extracted. Then this extracted part is compared with each t