Fast external calibration of camera based on point set matching

Hu Ye; Kai Guo; Honglin Chen; Junhao Gu; Zinian Zhao

doi:10.1117/12.2623256

16 February 2022 Fast external calibration of camera based on point set matching

Hu Ye, Kai Guo, Honglin Chen, Junhao Gu, Zinian Zhao

Proceedings Volume 12083, Thirteenth International Conference on Graphics and Image Processing (ICGIP 2021); 120830F (2022) https://doi.org/10.1117/12.2623256
Event: Thirteenth International Conference on Graphics and Image Processing (ICGIP 2021), 2021, Kunming, China

Abstract

For increasing speed of camera external calibration, ensuring the same size of two control point sets and increasing matching rate of camera images after projection transformation, a fast extraction method of control points is established and a point set matching method based on Delaunay triangulation is proposed. Experimental result shows the extraction method can extract all the control points correctly without spurious and lost extraction. In addition, we obtain simulation images with projection transformation according to camera imaging principle. Through simulation we can see the point set matching method can adapt to the projection transformation and improve matching rate in the limited angle range. Lastly, the experimental result shows the external calibration relative error based on our method is below 0.3% compared with manual external calibration.

Citation Download Citation

Hu Ye, Kai Guo, Honglin Chen, Junhao Gu, and Zinian Zhao "Fast external calibration of camera based on point set matching", Proc. SPIE 12083, Thirteenth International Conference on Graphics and Image Processing (ICGIP 2021), 120830F (16 February 2022); https://doi.org/10.1117/12.2623256

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KEYWORDS

Cameras

Calibration

Imaging systems

Detection and tracking algorithms

Control systems

3D image processing

Matrices

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