Invention Grant
- Patent Title: Two layer correlation marks with variable data hiding layer
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Application No.: US17113075Application Date: 2020-12-06
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Publication No.: US11218607B1Publication Date: 2022-01-04
- Inventor: Edward N. Chapman
- Applicant: Xerox Corporation
- Applicant Address: US CT Norwalk
- Assignee: Xerox Corporation
- Current Assignee: Xerox Corporation
- Current Assignee Address: US CT Norwalk
- Agency: Ortiz & Lopez, PLLC
- Agent Luis M. Ortiz; Kermit D. Lopez
- Main IPC: H04N1/08
- IPC: H04N1/08 ; H04N1/00 ; H04N1/32 ; H04N1/387

Abstract:
A method and system for rendering a correlation mark, can involve determining a combined path of a foreground comprising a first layer based on a first correlation pattern and a background comprising a second layer based on a second correlation pattern. The size of the second layer of the second layer can be calculated based on a trade off between how well the second layer hides a correlation effect and a readability of the second layer. The combined path can be filled with variable data at the size of the second layer at a selected color or a third correlation pattern to produce a two-layer correlation mark having a variable data hiding layer for rendering on or through a recording medium.
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