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论文类型：期刊论文

发表时间：2015-06-15

发表刊物：OPTICS EXPRESS

收录刊物：SCIE、EI、Scopus

卷号：23

期号：12

页面范围：15205-15223

ISSN号：1094-4087

摘要：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%. (C) 2015 Optical Society of America.