Detection of Line Scratch in Video

Most common defects are flicker, dirt, dust and line scratches.Here we consider line scratch detection.Line scratches appear as thin bright or dark line.This line are usually straight and vertical.The restoration of old videos is based on primary interest because of great quantity of old film records. But manual digital restoration of videos is time consuming process. To detect the scratch in films or video is very difficult task because of the various characteristics of the detected defects. There are main problems created during line scratch detection like sensitivity to noise and texture or some time wrong detection due to thin structure related to scene. In this method, robust and automatic algorithm for frame scratch detection in videos and an temporal algorithm for filtering wrong detection is applied. Hence in this, there is relax some of the techniques used for detection which causes more number of scratches are detected. In this way effectiveness and lack of some external parameters are acquire by combining of a contrario methodology as well as local statistical estimation. In this way ,scratch detection in textures is reduced fast.The filtering algorithm eliminates wrong detection due to vertical structure by exploiting the coherence of motion in videos.