发明名称 Feature-based watermarks and watermark detection strategies
摘要 Processes and apparatus for improving the state of the art for watermarking and data protection. The disclosure includes feature-based watermarks, auto- and cross-correlation techniques for determining scaling and rotation, transitions in time based watermarking, autocorrelation watermarks for images, and dynamic content scrambling of static files.
申请公布号 US7020303(B2) 申请公布日期 2006.03.28
申请号 US20010810079 申请日期 2001.03.16
申请人 DIGIMARC CORPORATION 发明人 LEVY KENNETH L.;DECKER STEPHEN K.
分类号 G06K9/00 主分类号 G06K9/00
代理机构 代理人
主权项
地址