Machine vision for ice layer thickness measurements

Ivi Hermanto; R. E. Gagnon

doi:10.1117/12.262511

19 December 1996 Machine vision for ice layer thickness measurements

Ivi Hermanto, R. E. Gagnon

Proceedings Volume 2911, Advanced Sensor and Control-System Interface; (1996) https://doi.org/10.1117/12.262511
Event: Photonics East '96, 1996, Boston, MA, United States

Abstract

A patented technique for remotely measuring layer thickness of transparent fluids and solids on surfaces has been incorporated into Canpolar East's Smart Camera 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.

Citation Download Citation

Ivi Hermanto and R. E. Gagnon "Machine vision for ice layer thickness measurements", Proc. SPIE 2911, Advanced Sensor and Control-System Interface, (19 December 1996); https://doi.org/10.1117/12.262511

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