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<p>Improvements to the triangulation range-sensing technique are described. The improvements greatly increase the range-data collection rate, while simultaneously providing for improved data integrity and a low-cost implementation. These benefits are achieved by using some unique abilities of the charge-injection-device image sensor. A laser-based investigation system has been built around a personal computer and used to evaluate the effectiveness of the improvements. Range data results are shown for the proposed application of printed-circuit board inspection.</p>
CCD image sensors; surface topography measurement; triangulation-based 3-D imaging; orthonormal data projections; error detection; charge-injection-device image sensor; laser-based investigation system; printed-circuit board inspection; CCD image sensors; computer vision; inspection; laser beam applications; printed circuit testing; surface topography measurement
D.D. Harrison, M.P. Weir, "High-Speed Triangulation-Based 3-D Imaging with Orthonormal Data Projections and Error Detection", IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 12, no. , pp. 409-416, April 1990, doi:10.1109/34.50627
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