Three-dimensional profiling using the Fourier transform method with a hexagonal grating projection.
We present three-dimensional profilometry based on triangulation in which a hexagonal pattern is projected on the object. To obtain an accurate result with a one-shot photographic image, the Fourier transform method and method of excess fraction are adopted. The three grating components of the hexagonal pattern are used. For compactness a new pattern projection scheme is introduced. The experimental results show that the constructed optical system works well for measuring the profile of a mannequin with a height resolution of ~ +/- 1 mm.
Iwata
Koichi
K
Technology Research Institute of Osaka Prefecture, Osaka, Japan. k-iwata@tri.pref.osaka.jp
Kusunoki
Fuminori
F
Moriwaki
Kousuke
K
Fukuda
Hiroki
H
Tomii
Takaharu
T