アーカイブス映像の劣化修復システムの開発 : アナログVTR素材の劣化修復(<フィールド論文小特集>放送現業・コンテンツ制作)

概要

論文の詳細を見る
This paper describes a method for restoring the defects inherent in video archives recorded in analog mode. The requirements for the restoration system are that it takes a short time and that it does not cost much. First, the nature and occurrence of the defects are examined for video archives. A restoration method is then proposed that is based on the characteristics of the defects. The method uses temporal and spatial median filters, the differences in luminance levels between the original and filtered images, and the chrominance levels of the original images. It restores not only the defects in small motion areas but also conspicuous white scratches without producing any artifacts. It has a semiautomatic mode, and it enables the selection of the temporal and spatial median filters and the number of frames for the temporal filter or the macroblock size for the spatial filter.
社団法人映像情報メディア学会の論文
2005-02-01