改ざんを考慮した動画像の電子透かしに関する二, 三の考察

概要

論文の詳細を見る
Since illegal copying of digital contents is becoming a serious problem, this paper proposes a new digital watermarking method using motion compensated vectors of a digital video coding algorithm such as MPEG. The embedded information is protected by error correcting code from an alteration attack. The error probability of the embedded information after a re-encoding attack can potentially be made less than 10^<-5> for appropriate parameter values. The relationship between the SNR of the proposed method and resistance to re-encoding attack is also considered. We also propose several new embedding methods that can improve the SNR of a video signal with a digital watermark by controlling the embedding area adaptively. We expect the proposed method to play am important role in copyright protection of multimedia contents in the coming network society.
社団法人映像情報メディア学会の論文
2000-04-20