Projector calibration algorithm in omnidirectional structured light

Hongyu Wang; Chengdong Wu; Tong Jia; Xiaosheng Yu

doi:10.1117/12.2293993

15 November 2017 Projector calibration algorithm in omnidirectional structured light

Hongyu Wang, Chengdong Wu, Tong Jia, Xiaosheng Yu

Proceedings Volume 10605, LIDAR Imaging Detection and Target Recognition 2017; 106052M (2017) https://doi.org/10.1117/12.2293993
Event: LIDAR Imaging Detection and Target Recognition 2017, 2017, Changchun, China

Abstract

This paper aims to study the projector calibration algorithm in omnidirectional structured light (OSL). The traditional projector calibration method can not directly be used in omnidirectional system, because the projector is perpendicular to the omnidirectional camera in our experiment. Therefor, we design a complete algorithm for the calibration of omnidirectional structured light. Firstly, a calibration plane is applied. And a checkerboard calibration board are placed on that and the checkerboard pattern projected from the projector onto that. Secondly, the equation of the calibration plane are computed based on the extrinsic parameters of the calibration board. Thirdly, the corners of the projected pattern are detected in the image captured by omnidirectional camera. Lastly, 3D projected points for each projected corner are obtained based on the ray-plane intersection. We designed a complete set of OSL calibration toolbox based on the proposed methods in Matlab. The proposed method and toolbox in Matlab have been shown to be accurate and easyto-use in projector calibration.

Citation Download Citation

Hongyu Wang, Chengdong Wu, Tong Jia, and Xiaosheng Yu "Projector calibration algorithm in omnidirectional structured light", Proc. SPIE 10605, LIDAR Imaging Detection and Target Recognition 2017, 106052M (15 November 2017); https://doi.org/10.1117/12.2293993

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