3D imager for dimensional gauging of industrial workpieces: state of the art of the development of a robust and versatile system

Author

Sansoni, Giovanna ; Lazzari, Sara ; Peli, Stefano ; Docchio, Franco

Author_Institution

Dept. of Electron. for Autom., Brescia Univ., Italy

fYear

1997

Firstpage

19

Lastpage

26

Abstract

In our laboratory, the performance of a 3D imaging system, based on structured light projection, has been improved by means of the development of three procedures, which are based on (i) the Gray Code projection Method (GCM), (ii) the Phase Shift Method (PSM), and (iii) the combination of GCM and PSM. In this paper, all the procedures are described and the results of the measurement performed on target objects are presented. The analysis of the systematic height error due to the crossed axes optical geometry of the system is performed, and the procedure for its compensation is presented

Keywords

Gray codes; computer vision; production engineering computing; 3D imaging; Gray Code projection Method; Phase Shift Method; dimensional gauging; industrial workpieces; optical geometry; structured light projection; systematic height error; Encoding; Frequency; Gratings; High-resolution imaging; Laboratories; Optical imaging; Performance evaluation; Reflective binary codes; Robustness; Shape measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

3-D Digital Imaging and Modeling, 1997. Proceedings., International Conference on Recent Advances in

Conference_Location

Ottawa, Ont.

Print_ISBN

0-8186-7943-3

Type

conf

DOI

10.1109/IM.1997.603844

Filename

603844