System for measuring shapes and dimensions of gaps and flushnesses on three dimensional surfaces of objects
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United States of America Patent
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-
Jul 7, 1992
Grant Date -
N/A
app pub date -
Jun 15, 1990
filing date -
Dec 15, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for measuring three-dimensional shapes and dimensions includes: an imaging unit which faces an object with shape changes on the surface and images by means of a TV camera the slit line formed on the object surface by projecting slit light from a slit light source at a fixed angle; and a surface feature extraction member for extracting features representing the shape changes of the object surface, based on the changes of the XYZ coordinate values of the object surface detected by triangulation based on the centroid position of the intensity distribution of the slit line image corresponding to the scanning lines from the TV camera. Based on features thus extracted, the surface shape of the object can be measured rapidly with high precision.
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Cited Art Landscape
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