发明名称 |
Arrangement for measuring depth based on lens focusing |
摘要 |
A pattern of light is projected upon a surface to be measured which may be devoid of surface detail. A sharply focused image of the surface provides distance discrimination. Although the projected pattern may be separate from the imaging optics, a common optics path removes distortion, provides maximum sensitivity and eliminates processing for misalignment between projector and imager. Sequential cross-correlation, synchronous detection or percent modulation processing methods may be readily implemented to develop three-dimensional co-ordinates relative to the sensor for all in-focus regions of the image. Refocusing the lens provides depth coverage.
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申请公布号 |
US4629324(A) |
申请公布日期 |
1986.12.16 |
申请号 |
US19830566687 |
申请日期 |
1983.12.29 |
申请人 |
ROBOTIC VISION SYSTEMS, INC. |
发明人 |
STERN, HOWARD |
分类号 |
G01B11/24;(IPC1-7):G01B11/24 |
主分类号 |
G01B11/24 |
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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