发明名称 Halftone watermarking and related applications
摘要 Digital watermark embedding is incorporated into processes for generating halftone images. In a halftone process using a halftone screen, the halftone screen is used to determine the geometric distortion of an image. After determining the geometric distortion, a watermark decoder compensates for this distortion and retrieves an embedded digital watermark.
申请公布号 US2004258273(A1) 申请公布日期 2004.12.23
申请号 US20040781056 申请日期 2004.02.17
申请人 BRUNK HUGH L. 发明人 BRUNK HUGH L.
分类号 G06T1/00;H04N17/00;(IPC1-7):G06K9/00;G06K9/18 主分类号 G06T1/00
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