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Optical edge-projection method for three-dimensional profilometry.

C J Tay·H Miao·Y Fu
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Abstract

A novel optical edge-projection method is proposed for surface contouring of an object with low reflectivity. A structured light edge is projected onto a dark surface, and the image is captured by a CCD camera. The object contour is evaluated with an active triangular projection algorithm, and one obtains a whole-field three-dimensional contour of the object by scanning the optical edge over the entire object surface. The proposed method is applied to a black nonreflective object made from woven carbon fiber and is also applied to measure the profile of a small object (a coin). The results show that an accurate profile of the specimen can be obtained.

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AlgorithmsCorneal TopographyEquipment DesignEquipment Failure AnalysisImage EnhancementImage Interpretation, Computer-AssistedImaging, Three-DimensionalReproducibility of ResultsSensitivity and SpecificityJournal Article

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C J Tay, H Miao, Y Fu. 2005-10-15. Optical edge-projection method for three-dimensional profilometry.. https://doi.org/10.1364/ol.30.002718

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