Title :
A practical means for the calibration of a binocular structured light system
Author :
Hui Chen ; Zexi Feng ; Zhan Song
Author_Institution :
Inst. of Adv. Mater., Univ. of Posts & Telecommun., Nanjing, China
Abstract :
This paper presents a practical means for the calibration of a binocular structured light system (SLS). Considering the characteristics of binocular SLS, 3D coordinates of space points are indicated by the average values of two cameras and then used to calibrate the projector. According to the idea of bundle adjustment, an error function is constructed to minimize the whole calibration errors. And a non-linear least squares function is applied to find the minimum to the sum of squares of the function. The experimental results show that, with the optimized calibration results, less calibration errors and better alignment of 3D scanning data can be obtained.
Keywords :
calibration; cameras; least squares approximations; optical projectors; optical scanners; 3D scanning data alignment; 3D space point coordinate; SLS; binocular structured light system; calibration; camera; nonlinear least square function; projector; Accuracy; Calibration; Cameras; Measurement errors; Measurement uncertainty; Optimization; Three-dimensional displays; 3D alignment; Binocular structured light; projector calibration;
Conference_Titel :
Information Science and Technology (ICIST), 2014 4th IEEE International Conference on
Conference_Location :
Shenzhen
DOI :
10.1109/ICIST.2014.6920553
