Chinese Optics Letters, 2014, 12 (12): 121101, Published Online: Nov. 19, 2014
3D shape measurement of larger complex objects based on fringe cycle correction Download: 588次
110.6880 Three-dimensional image acquisition 120.2650 Fringe analysis 120.2830 Height measurements 100.5088 Phase unwrapping
Abstract
The grating fringe on the reference plane is broadened in the intersecting axis system because of oblique-angle projection. In order to solve this problem, we study the theoretical model of the temporal phase unwrapping method based on the fringe cycle correction. We also study the 3D shape measurement theoretical model of the larger complex objects after considering the coordinate deviation and lens distortion. Experimental results demonstrate that the fringe cycle on the reference plane can be corrected to a constant value, the lens distortion can be corrected, and 3D shape of larger complex objects can be accurately measured.
Yanjun Fu, Jie Yang, Zhigang Wang, Haitao Wu. 3D shape measurement of larger complex objects based on fringe cycle correction[J]. Chinese Optics Letters, 2014, 12(12): 121101.