Invention Grant
- Patent Title: Counterfeit deterrence using dispersed miniature security marks
- Patent Title (中): 使用分散的微型安全标记的假冒威慑
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Application No.: US11656667Application Date: 2007-01-23
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Publication No.: US07949175B2Publication Date: 2011-05-24
- Inventor: Zhigang Fan
- Applicant: Zhigang Fan
- Applicant Address: US CT Norwalk
- Assignee: Xerox Corporation
- Current Assignee: Xerox Corporation
- Current Assignee Address: US CT Norwalk
- Agency: MH2 Technology Law Group LLP
- Main IPC: G06K9/00
- IPC: G06K9/00 ; H04N1/40

Abstract:
A method is disclosed for detection of miniature security mark configurations within documents and images, wherein the miniature security marks are in the form of dispersed miniature security marks and may include data marks or a combination of data marks and anchor marks. The method includes sub-sampling a received image, which is a digital representation possible recipient(s) of the miniature security marks, to generate a reduced-resolution image of the received image. Maximum/minimum points detection is performed and the maximum/minimum points are grouped into one or more clusters according to location distances between the maximum/minimum points. Group configuration is checked to match the clusters with a pre-defined template configuration. Dot parameter verification is then performed to verify mark location and configuration between the received image and a pre-defined template dot specification.
Public/Granted literature
- US20080174101A1 Counterfeit deterrence using dispersed miniature security marks Public/Granted day:2008-07-24
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