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http://dx.doi.org/10.7736/KSPE.2015.32.6.537

Measurement of 3D Shape of Fastener using Camera and Slit Laser  

Kim, Jin Woo (Graduate School of Automotive Engineering, Seoul National University of Science and Technology)
Song, Tae Hun (Graduate School of Automotive Engineering, Seoul National University of Science and Technology)
Ha, Jong Eun (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of the Korean Society for Precision Engineering / v.32, no.6, 2015 , pp. 537-542 More about this Journal
Abstract
The measurement of 3D shape is important in inspecting the quality of product. In this paper, we present a 3D shape measurement system of fastener using a camera and a slit laser. Calibration structure with slits is used in the extrinsic calibration of the camera and laser. The pose of the camera and laser is computed under the same world coordinate system in the calibration structure. Reflection of laser light on the metal surface causes many difficulties in the robust detection of them on image. We overcome this difficulty by using color and dynamic programming. Motor stage is used to rotate the fastener to recover the whole 3D shape of the surface of it.
Keywords
3D shape measurement; Camera calibration; Extrinsic calibration; Machine vision;
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