Video signal processing

H - Electricity – 04 – N

Patent

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Details

H04N 5/253 (2006.01) H04N 5/21 (2006.01)

Patent

CA 2404651

In video scratch repair, scratches are treated as additive pedestals which are constant or slowly changing along the scratch. For a given picture, these pedestals are estimated and subtracted from the video input to reveal original picture detail. The pedestal can be estimated by heavily filtering along the direction of the presumed scratch, the output of a prior art scratch detector.

La présente invention concerne la réparation d'accrocs vidéo. Selon cette invention, les accrocs sont traités comme des décollements additifs, qui sont constants ou légèrement variables le long de l'accroc. Pour une image donnée, ces décollements sont évalués et soustraits de l'entrée vidéo, afin d'afficher les détails de l'image originale. Les décollements peuvent être évalués par un filtrage important de la sortie d'un détecteur d'accroc de l'état de la technique, le long de l'accroc supposé.

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