Invention Grant
- Patent Title: Infrared watermarking of photographic images by matched differential black strategies
- Patent Title (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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Application No.: US12106709Application Date: 2008-04-21
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Publication No.: US08111432B2Publication Date: 2012-02-07
- Inventor: Reiner Eschbach , Martin S. Maltz
- Applicant: Reiner Eschbach , Martin S. Maltz
- Applicant Address: US CT Norwalk
- Assignee: Xerox Corporation
- Current Assignee: Xerox Corporation
- Current Assignee Address: US CT Norwalk
- Agency: Fay Sharpe LLP
- Main IPC: H04N1/40
- IPC: H04N1/40 ; H04N1/46 ; G06K9/00

Abstract:
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.
Public/Granted literature
- US20090262400A1 INFRARED WATERMARKING OF PHOTOGRAPHIC IMAGES BY MATCHED DIFFERENTIAL BLACK STRATEGIES Public/Granted day:2009-10-22
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