Tay C J, Miao H, Fu Y
Department of Mechanical Engineering, National University of Singapore.
Opt Lett. 2005 Oct 15;30(20):2718-20. doi: 10.1364/ol.30.002718.
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.
提出了一种用于低反射率物体表面轮廓测量的新型光学边缘投影方法。将结构化光边缘投影到深色表面上，并用电荷耦合器件（CCD）相机采集图像。采用主动三角投影算法评估物体轮廓，通过在整个物体表面扫描光学边缘来获取物体的全场三维轮廓。该方法应用于由编织碳纤维制成的黑色非反射物体，也用于测量小物体（一枚硬币）的轮廓。结果表明，可以获得试样的精确轮廓。
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