シャ　キンカ   Jinhua She   佘　錦華    所属   工学部 機械工学科    職種   教授
言語種別	英語
発行・発表の年月	2011/12
形態種別	学術論文
査読	査読あり
標題	A Calibration Method for A Linear Structured Light System with Three Collinear Points
執筆形態	共著
掲載誌名	International Journal of Computational Intelligence Systems
出版社・発行元	Taylor & Francis Group
巻・号・頁	4(6),pp.1298-1306
著者・共著者	Yan Liu, Qinglin Wang, Yuan Li, and Jinhua She
概要	A calibration method to calibrate both the camera intrinsic parameters and the structured light projector based on three collinear points with any known distance is presented. First, fix one point of the target and move it in the camera field of view with unknown viewpoint at least six times. Next, use camera to obtain the image of the points so as to identify the camera intrinsic parameters. Then, move the target in the structure light plane at least twice. Using the calibrated camera obtains the images of the three points and adopts the principle of triangulation to work out the coordinates of the calibration points in the camera coordinate system. Finally, employ the random sample consensus algorithm to eliminate the outlier and adopt the genetic algorithm for system identification to find the coefficients of the structured light plane. The average absolute error and the average relative error of the segment measurement with this structured light system are 0.13 mm and 0.04%, respectively. Those show that the measuring accuracy of this system achieves the requirements of the basic error limit. Comparison results show that the measurement accuracy of our method is superior to the other method for the same targets.
DOI	10.1080/18756891.2011.9727879