Out-of-Focus Projector Calibration Method with Distortion Correction on the Projection Plane in the Structured Light Three-Dimensional Measurement System

被引:7
作者
Zhang, Jiarui [1 ]
Zhang, Yingjie [1 ]
Chen, Bo [1 ]
机构
[1] Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
calibration; out-of-focus projector; distortion correction; focal plane; projection plane; PULSE-WIDTH MODULATION; 3-D SHAPE MEASUREMENT; CAMERA CALIBRATION; ACCURATE CALIBRATION; BINARY; COMPENSATION; PROFILOMETRY;
D O I
10.3390/s17122963
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The three-dimensional measurement system with a binary defocusing technique is widely applied in diverse fields. The measurement accuracy is mainly determined by out-of-focus projector calibration accuracy. In this paper, a high-precision out-of-focus projector calibration method that is based on distortion correction on the projection plane and nonlinear optimization algorithm is proposed. To this end, the paper experimentally presents the principle that the projector has noticeable distortions outside its focus plane. In terms of this principle, the proposed method uses a high-order radial and tangential lens distortion representation on the projection plane to correct the calibration residuals caused by projection distortion. The final accuracy parameters of out-of-focus projector were obtained using a nonlinear optimization algorithm with good initial values, which were provided by coarsely calibrating the parameters of the out-of-focus projector on the focal and projection planes. Finally, the experimental results demonstrated that the proposed method can accuracy calibrate an out-of-focus projector, regardless of the amount of defocusing.
引用
收藏
页数:23
相关论文
共 44 条
[1]   Direct Linear Transformation from Comparator Coordinates into Object Space Coordinates in Close-Range Photogrammetry [J].
Abdel-Aziz, Y. I. ;
Karara, H. M. .
PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING, 2015, 81 (02) :103-107
[2]  
[Anonymous], 1997, IMAGE UNDERSTANDING
[3]   Pulse-width modulation in defocused three-dimensional fringe projection [J].
Ayubi, Gaston A. ;
Ayubi, Jaime A. ;
Matias Di Martino, J. ;
Ferrari, Jose A. .
OPTICS LETTERS, 2010, 35 (21) :3682-3684
[4]  
Bacakoglu H, 1997, IEEE INT CONF ROBOT, P1347, DOI 10.1109/ROBOT.1997.614324
[5]   Automatic Radial Distortion Estimation from a Single Image [J].
Bukhari, Faisal ;
Dailey, Matthew N. .
JOURNAL OF MATHEMATICAL IMAGING AND VISION, 2013, 45 (01) :31-45
[6]   Accurate calibration method for camera and projector in fringe patterns measurement system [J].
Chen, Rui ;
Xu, Jing ;
Chen, Heping ;
Su, Jianhua ;
Zhang, Zonghua ;
Chen, Ken .
APPLIED OPTICS, 2016, 55 (16) :4293-4300
[7]  
Claus D, 2005, PROC CVPR IEEE, P213
[8]  
D'Apuzzo N., 2006, P SPIE EL IM SAN JOS, P605
[9]  
FAIG W, 1975, PHOTOGRAMM ENG REM S, V41, P1479
[10]  
Gao W., 2008, OPTICAL ENG, V47, P767