Scratch tracking for 2 in video tape applications
Javier Valls Catalá, Neal R. Harvey, Stephen Marshall · Electronics Letters · 1998
Physical scratches on 2 in video tapes cause severe degradation in viewable picture quality. A new algorithm for locating these defects is presented, based on the way in which the data are mapped onto the tape and how the scratches affect corresponding image pixels. Also, the mapping onto tape results in optimal image feature preservation, i.e. only the features affected by the scratch are processed.