1 May 1998 Retroreflective grating analysis versus physical measurements of surface contour
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Optical Engineering, 37(5), (1998). doi:10.1117/1.601661
Abstract
The technique of retroreflective grating analysis is presented to measure surface contour. This noncontacting optical method can detect a dent with maximum depth less than 10 mm. A comparison with some physical measuring systems indicates that it has advantage over such contacting measurements, especially for specular surfaces.
XianZhu Zhang, Walter P. T. North, "Retroreflective grating analysis versus physical measurements of surface contour," Optical Engineering 37(5), (1 May 1998). http://dx.doi.org/10.1117/1.601661
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KEYWORDS
Retroreflectors

Inspection

Light sources

Fringe analysis

Image processing

Light

Signal processing

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