An automated monitoring service downloads image files (including, e.g., graphic and video files) and audio files from various Internet sites, and checks these files for the presence of embedded digital watermark data. When found, such data is decoded and used to identify the proprietor of each watermarked...http://www.google.fr/patents/US6647128?utm_source=gb-gplus-shareBrevet US6647128 - Method for monitoring internet dissemination of image, video, and/or audio files
Method for monitoring internet dissemination of image, video, and/or audio files
