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.
© 2005 Optical Society of America
Full Article | PDF ArticleMore Like This
Chenggen Quan, Hong Miao, and Yu Fu
Appl. Opt. 45(20) 4815-4820 (2006)
Hua Du and Zhaoyang Wang
Opt. Lett. 32(16) 2438-2440 (2007)
Dalip Singh Mehta, Satish Kumar Dubey, M. Mosarraf Hossain, and Chandra Shakher
Appl. Opt. 44(35) 7515-7521 (2005)