Automatic 3D Measurement System by the Grid Illumination Type Moire Method
Yasuhiko Arai*, Shunsuke Yokozeki** and Tomoharu Yamada*
* Department of Mechanical Engineering, Faculty of Engineering, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka 564, Japan
** Department of Mechanical System Engineering, Faculty of Computer Science and System Engineering, Kyushu Institute of Technology, 680-4, Kawazu, lizuka, Fukuoka 820, Japan
This paper describes an installation of the fringe scanning method into a shadow-type Moire Topography. The result is a high-precision three-dimensional measuring system and automatic fringe order measuring system using a liquid crystal plate. A description of this fullyautomatic measuring system, which does not require the user to have knowledge of measuring instruments, is also provided. This system was constructed by achieving the automation of Moire topography, which is regarded as difficult due to problems concerning the linkage of independent processes. The validity of the system is illustrated by experimental results for spheres and for planes with a difference in level.