• Optics and Precision Engineering
  • Vol. 19, Issue 5, 1134 (2011)
YANG Jian*1,2,*, L Nai-guang2,3, QIN Ping-le1, and YANG Qiu-xiang1
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
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    DOI: 10.3788/ope.20111905.1134 Cite this Article
    YANG Jian*, L Nai-guang, QIN Ping-le, YANG Qiu-xiang. Camera calibration based on flexible spliced two-dimensional target[J]. Optics and Precision Engineering, 2011, 19(5): 1134 Copy Citation Text show less

    Abstract

    A camera calibration method based on the flexible spliced two-dimensional target is proposed to orercome the problems in the camera calibration that a large scale target with high precision is hard to fabricate, and the smaller one cannot satisfy the required accuracy. According to this problem. The flexible spliced two-dimensional target consists of many small planar targets (called sub-target). Each sub-target includes a matching area and an extending area. Those sub-targets are combined into a virtual large scale planar target (called mother-target) by encode in the matching area and the camera parameters are calibrated by the mother-target. Simulation and real experiment results indicate that the accuracy of the proposed calibration method is almost the same as that of Zhang’s calibration method using a large planar target with the point numbers similar to that of the flexible spliced two-dimensional target. The relative error of the calibration result of them is less than 2%. This method shows his advantages in that the target is convenient to be fabricated, and the area of target can be extended infinitely.
    YANG Jian*, L Nai-guang, QIN Ping-le, YANG Qiu-xiang. Camera calibration based on flexible spliced two-dimensional target[J]. Optics and Precision Engineering, 2011, 19(5): 1134
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