title: Improved camera calibration method based on perpendicularity compensation for binocular stereo vision measurement system.
abstract: High-precision calibration of binocular vision systems plays an important role in accurate dimensional measurements. In this paper, an improved camera calibration method is proposed. First, an accurate intrinsic parameters calibration method based on active vision with perpendicularity compensation is developed. Compared to the previous work, this method eliminates the effect of non-perpendicularity of the camera motion on calibration accuracy. The principal point, scale factors, and distortion factors are calculated independently in this method, thereby allowing the strong coupling of these parameters to be eliminated. Second, an accurate global optimization method with only 5 images is presented. The results of calibration experiments show that the accuracy of the calibration method can reach 99.91%.
authors.forename: Zhenyuan
authors.initials: Z
authors.lastname: Jia
authors.forename: Jinghao
authors.initials: J
authors.lastname: Yang
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.forename: Fuji
authors.initials: F
authors.lastname: Wang
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.forename: Lingli
authors.initials: L
authors.lastname: Wang
authors.forename: Chaonan
authors.initials: C
authors.lastname: Fan
authors.forename: Kai
authors.initials: K
authors.lastname: Zhao