Invention Grant
- Patent Title: System and method for detection of miniature security marks
- Patent Title (中): 用于检测微型安全标记的系统和方法
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Application No.: US11502808Application Date: 2006-08-11
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Publication No.: US07676058B2Publication Date: 2010-03-09
- 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
- Main IPC: G06K9/00
- IPC: G06K9/00

Abstract:
A method is disclosed for detection of miniature security mark configurations within documents and images, wherein the miniature security marks 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. Shape verification is then performed to verify mark location and configuration between the reduced-resolution image and the received image.
Public/Granted literature
- US20080037821A1 System and method for detection of miniature security marks Public/Granted day:2008-02-14
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