Machine vision for ice layer thickness measurements

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ConferenceCanadian Conference on Electrical and Computer Engineering, May 25-28, 1997, St. John's, NF
Subjectremote ice detector; ice layer; machine vision; layer thickness measurement
AbstractA patented technique for remotely measuring layer thickness of transparent fluids and solids on surfaces has been incorporated into Canpolar East's Smart Camera (VE-262) and been validated for measurement of ice layer thickness. This application addresses the need for reliable detection of icing on aircraft. The thickness measurement technique is carried out by directing a laser beam at the surface with the ice layer. A pattern of illumination appears on the surface as a result of internal reflection of the laser light within the ice layer. The layer thickness is calculated by a simple formula involving the size of the image pattern and the refractive index of layer material. The system was tested using a wedge-shaped ice sample with a maximum thickness of about 10 mm. The data indicated a system measurement accuracy of ±0.1 mm.
Publication date
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedNo
NRC number5502
NPARC number8895761
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Record identifierc1fdb5dd-3b7d-4ca3-b7af-52258c59937b
Record created2009-04-22
Record modified2016-05-09
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