6 September 2017 An edge sensitive 3D measurement using two directional laser stripes scanning with a laser projector
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Abstract
Laser scanning is widely used in on-line industrial 3D inspection, cultural heritage conservation and reverse engineering. However, in the traditional laser scanning, the most widely-used approach is based on the projection of a single directional laser stripe over an object. Because the width of the laser stripe is physically difficult to compress enough to be fine at the edge of the object, the traditional measurement method is not accurate for edge measurements. This paper proposes an edge sensitive 3D measurement system which is fast and accurate, using two directional laser stripes scanning with a laser projector. Scanning metal edge steps and complex surface edge with this system only require a single scanning to perform 3D reconstruction. So this scanning method has the advantages of high efficiency, high speed and edges with high precision.
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Dong Li, Xiang Zhou, Changda Xu, Chao Wang, Jiayu Guo, "An edge sensitive 3D measurement using two directional laser stripes scanning with a laser projector", Proc. SPIE 10410, Unconventional and Indirect Imaging, Image Reconstruction, and Wavefront Sensing 2017, 1041010 (6 September 2017); doi: 10.1117/12.2276848; https://doi.org/10.1117/12.2276848
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