17-1 Study on a Method for Using both Invisible and Emergable Watermarks by Dividing Regions in Video Content

Abstract

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