发明名称 |
SYSTEM AND METHOD FOR RECOGNIZING MARKERS ON PRINTED CIRCUIT BOARDS |
摘要 |
A system and method for recognizing markers on, e.g., a PCB (printed circuit board). In one aspect, a system for recognizing a marker in an image comprises an image capture module (14) for extracting image features associated with an input image of a ROI (region of interest) captured through a lens 15, an image processor (16) comprising a first marker recognition processor (17) for recognizing a marker in the input image based on a normalized correlation and a second marker recognition processor (18) for recognizing a marker in the input image based on gray value histograms; a training module 19 for building template images and histograms that are used by the image processor (16) to detect a marker in the input image and a database (20) for indexing and storing trained template images and trained histograms.
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申请公布号 |
WO02080645(A1) |
申请公布日期 |
2002.10.10 |
申请号 |
WO2002US09032 |
申请日期 |
2002.03.26 |
申请人 |
SIEMENS CORPORATE RESEARCH, INC. |
发明人 |
NEUBAUER, CLAUS;FANG, MING |
分类号 |
G06K9/32;G06K9/46;G06K9/64;H05K13/08;(IPC1-7):H05K13/08 |
主分类号 |
G06K9/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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