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公开(公告)号:US07098931B2
公开(公告)日:2006-08-29
申请号:US09858336
申请日:2001-05-15
IPC分类号: G09G5/02
CPC分类号: G06T1/0021 , G01C11/00 , G06F21/6209
摘要: Digital watermarking technology is used in an image management system. Images are uniquely identified by digital watermarks. The images are stored so as to be indexed according to their unique identifiers. In the preferred embodiment, related images are linked together by the unique watermark identifier. The unique watermark identifiers are also used to manage metadata, and provide forensic tracking.