发明授权
- 专利标题: Infrared watermarking of photographic images by matched differential black strategies
- 专利标题(中): 通过匹配差分黑色策略的摄影图像的红外水印
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申请号: US12106709申请日: 2008-04-21
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公开(公告)号: US08111432B2公开(公告)日: 2012-02-07
- 发明人: Reiner Eschbach , Martin S. Maltz
- 申请人: Reiner Eschbach , Martin S. Maltz
- 申请人地址: US CT Norwalk
- 专利权人: Xerox Corporation
- 当前专利权人: Xerox Corporation
- 当前专利权人地址: US CT Norwalk
- 代理机构: Fay Sharpe LLP
- 主分类号: H04N1/40
- IPC分类号: H04N1/40 ; H04N1/46 ; G06K9/00
摘要:
A system and method for infrared watermarking using gray component replacement and other color removal schemes is shown. This method includes providing a substrate and implementing two infrared absorption strategies, one with low infrared absorption and the other with high infrared absorption. These two strategies are then combined in order to form two gamuts with substantially similar shapes. This combination can be made by blending the gamuts at areas where one of the strategies do not meet or implementing the intersection of the two gamuts. A watermark is then printed along with an image. The resultant image with watermark is void of artifacts while still having a consistent watermark signal.
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