17-1 動画領域分割による不可視の電子透かしと潜像の共存方法の一検討(第17部門画像符号化2)

抄録

Mutual interference caused by dual embedding would degrade the performance of both types of watermark. Frequency filtering is used to divide the content into two types of region. The emergable watermark is embedded in a plain large region with low spatial frequency while the invisible one is not. Use of this method should help deter illegal copying of videos