An accurate approach for calibrating rotational angle of camera

Zhenqi Niu; Kuo Liu; Zonghua Zhang

doi:10.1117/12.2245820

24 November 2016 An accurate approach for calibrating rotational angle of camera

Zhenqi Niu, Kuo Liu, Zonghua Zhang

Proceedings Volume 10023, Optical Metrology and Inspection for Industrial Applications IV; 1002312 (2016) https://doi.org/10.1117/12.2245820
Event: SPIE/COS Photonics Asia, 2016, Beijing, China

Abstract

In order to obtain the scene information of a larger or 360 degrees field of view, it is necessary to accurately know the rotational angle of a camera around a fixed axis, which directly affects the quality of point cloud registration and integration. This paper presents a novel rotational angle calibration method by using an extra large viewing-angle camera and high precise checkerboard. The large viewing-angle camera is fixed and has the same imaging direction as the calibrated camera. The checkerboard is placed in front of the two cameras to determine their relative positions. The experimental results show that the error between the actual rotational angle and the calibration result is below 0.0959 degrees. The proposed calibration method can accurately and effectively obtain the rotational angle of a camera.

Citation Download Citation

Zhenqi Niu, Kuo Liu, and Zonghua Zhang "An accurate approach for calibrating rotational angle of camera", Proc. SPIE 10023, Optical Metrology and Inspection for Industrial Applications IV, 1002312 (24 November 2016); https://doi.org/10.1117/12.2245820

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