发明名称 |
APPARATUS FOR MEASURING THREE-DIMENSIONAL COORDINATE |
摘要 |
Slit light pulses are projected onto an object to pick up the image of line segments on it by a TV camera, and the video signals of the image are used to obtain the three-dimensional coordinates of the object on the basis of the scanning signal of the TV camera. The image position of a line segment on the TV camera is detected based on the weighted average of intensities of the video signals. A look-up table is provided which contains the correlation between the positions of segment images and actual three-dimensional coordinates of the object. The correlation is corrected in accordance with the distortion of the TV camera lens. The output from the look-up table is stored in synchronism with the emission of the slit light pulses. The apparatus correctly detects three-dimensional coordonate values of an object whose physical position changes at high speeds or whose reflective index changes greatly. <IMAGE> |
申请公布号 |
EP0462289(A4) |
申请公布日期 |
1993.02.24 |
申请号 |
EP19910901636 |
申请日期 |
1990.12.26 |
申请人 |
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO |
发明人 |
OZEKI, OSAMU;HIGUCHI, KAZUNORI, NAGAKUTE-SHATAKU 405;YAMAMOTO, SHIN |
分类号 |
G01B11/00;G01S7/497;G01S17/42;G01S17/89 |
主分类号 |
G01B11/00 |
代理机构 |
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主权项 |
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