Journal of Electronic ImagingDefect detection from scratched 2 in. quadruplex video tape
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A technique is described for the detection of defects in digital video images, caused by scratching to the original 2 in. quadruplex video tape. This technique relies upon the reorientation of the digital video data into a manner similar to that in which the original analogue data would have been found on the video tape. This brings the scratched data into alignment and makes the task of detecting the scratched positions a great deal easier. In addition to enabling the detection of scratches in the video data, the technique enables new insight into the mechanisms through which the scratching was first brought about.