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Automation of Optical 3D-Measurement and Camera Calibration Using Circular Coded Target

: Ahn, S.J.; Rauh, W.; Westkämper, E.

Kyungnam Univ. Korea:
Innovations in Mechatronics and Intelligent System : Proceedings of the 2000 International Symposium on Mechatronics and Intelligent Mechanical System for 21 Century, Oct. 4-7, 2000, KyongSangNam-Do, Korea
KyongSangNam-Do, Korea, 2000
International Symposium on Mechatronics and Intelligent Mechanical System for 21 Century (ISIM) <2000, KyongSangNam-Do Korea>
Korea International Machinery Expo (KIMEX) <2000, KyongSangNam-Do, Korea>
Fraunhofer IPA ()
3D-Messen; 3D measurement; camera calibration; Circular Coded Target

Solving the correspondece problem (i.e. finding homologous image points in multiple images) is one of the primary, but tedious, tasks for the user and developer of an optical 3D-measurement system. With the solution, error-free correspondence and accurate measurement of image points are of great importance, on which the qualitative results of succeeding camera calibration and 3D-measurements are immediately dependent. In fact, the automation of measurement processes is getting more important with progresses in production, and hence, of increasing topical interest. In this paper, we present a circular coded target for automatic image point measurement and identification. The applied image processing method will be described in detail, and we will show some application examples of the circular coded target to optical 3D-measurement techniques.