A flexible new three-dimensional measurement technique by projected fringe pattern

• Published in: Optics and laser technology Vol. 38; no. 8; pp. 585 - 589
• Main Authors: Tian, Ailing, Jiang, Zhuangde, Huang, Yanqun
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.11.2006; Elsevier Science
• Subjects: 3D measurement; Camera calibration; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Lenses, prisms, and mirrors; Optical elements, devices, and systems; Optics; Perspective projection model; Physics; Projected fringe pattern; 3D measurement; Camera calibration; Projected fringe pattern; Perspective projection model; CCD camera; Measuring methods; Calibration; Experimental study; Optical lens
• ISSN: 0030-3992; 1879-2545
• DOI: 10.1016/j.optlastec.2005.02.006

Aimed at the problems of inferior precision and bad maneuverability for three-dimensional (3D) measurement by projected fringe pattern, a flexible new 3D technique for performing system calibration and measuring was proposed. First, we analyzed the principle of conventional 3D measurement with projected fringe pattern, and pointed out the shortcoming of measurement system. Then, the CCD camera calibration technique is analyzed and we set up the perspective projection model which transforms the computer image coordinate to 3D world coordinate, and we get the coordinate of the CCD camera image lens. Third, the position of projection lens optical center can be obtained using the above model. At last, some experiment results presented show that this technique is more simple and robust in engineering than conventional measurement method.