ウェーブレット変換を用いた動画像向け電子透かし方式

概要

論文の詳細を見る
With the advent of digital videoand digital broadcasting, copyright protection of video data has become an important issue. A novel method is described for digitally watermarking video data that is based on the discrete wavelettransform. The watermark is embedded in a multiresolution representation of each frame in the uncoded video by using controlled quantization. The watermark can be extracted directly from the decoded video without accessing the original video. Experimental results showed that the proposed method gives the watermarked image better quality and is robustagainst MPEG coding and re-coding. Also described is multiple watermarking with regard to generational copy control for video contents.
社団法人映像情報メディア学会の論文
2000-11-20