Camera calibration approach using circle-square-combined target

Fuqiang Zhou; Yexin Wang; Yi Cui; Haishu Tan

doi:doi:10.3788/col201210.021003

Chinese Optics Letters, 2012, 10 (2): 021003, Published Online: Sep. 21, 2011

Camera calibration approach using circle-square-combined target Download： 828次

论文大纲

Fuqiang Zhou Yexin Wang Yi Cui Haishu Tan

Author Affiliations

100.2000 Digital image processing 150.1488 Calibration

Abstract

Calibrating a small field camera is a challenging task because the traditional target with visible feature points that fit the limited space is difficult and costly to manufacture. We demonstrate a novel combined target used in camera calibration. The tangent points supplied by one circle located at the center of a square are used as invisible features, and the perspective projection invariance is proved. Both visible and invisible features extracted by the proposed feature extraction algorithm are used to solve the calibration. The target supplies a sufficient number of feature points to satisfy the requirements of calibration within a limited space. Experiments show that the approach can achieve high robustness and considerable accuracy. This approach has potential for computer vision applications particularly in small fields of view.

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Fuqiang Zhou, Yexin Wang, Yi Cui, Haishu Tan. Camera calibration approach using circle-square-combined target[J]. Chinese Optics Letters, 2012, 10(2): 021003.

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