发明名称 |
Surface texture recognition using multi-directional scanning |
摘要 |
In the invention, a light beam is scanned along a surface bearing data, such as a serial number. Reflected light is measured and processed for character recognition. The invention wobbles or dithers the light beam during the scan, and takes reflectivity measurements several times within a region on the surface, the region being called a pixel. This procedure enhances the reflectivity signature of edges, thus improving the ability to recognize characters.
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申请公布号 |
US4695721(A) |
申请公布日期 |
1987.09.22 |
申请号 |
US19850813360 |
申请日期 |
1985.12.26 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
FULKERSON, EMMET M.;SOMERS, RALPH M.;COMPTON, DIANA R. |
分类号 |
G06K9/20;(IPC1-7):G06K9/30 |
主分类号 |
G06K9/20 |
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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