Camera calibration method based on an isosceles right triangle planar pattern

Xukui Hou; Ende Wang; Liangyu Peng; Xuepeng Li; Kai Qi

doi:10.1117/12.2524241

6 May 2019 Camera calibration method based on an isosceles right triangle planar pattern

Xukui Hou, Ende Wang, Liangyu Peng, Xuepeng Li, Kai Qi

Proceedings Volume 11069, Tenth International Conference on Graphics and Image Processing (ICGIP 2018); 1106936 (2019) https://doi.org/10.1117/12.2524241
Event: Tenth International Conference on Graphic and Image Processing (ICGIP 2018), 2018, Chengdu, China

Abstract

Camera calibration is one of the key steps of 3D reconstruction. Aiming at improving the accuracy and solving the complex problems of camera calibration, based on the camera model, a practical approach of camera calibration based on an isosceles right triangle planar pattern was presented. The camera coordinate system was set as the world coordinate system. Five camera intrinsic parameters needed to be calibrated. The planar pattern contained three apexes of the triangle and two arbitrary points on two right angle sides. More than six pattern images were captured from different poses, the improved Harris detector was used to obtain the sub-pixel coordinates of the corners. Established the constraint equations according to the right angle, camera intrinsic parameters can be calculated. This method reduced the requirements of pattern and was simple and convenient to operate. Experiment shows that the approach is accurate.

Citation Download Citation

Xukui Hou, Ende Wang, Liangyu Peng, Xuepeng Li, and Kai Qi "Camera calibration method based on an isosceles right triangle planar pattern", Proc. SPIE 11069, Tenth International Conference on Graphics and Image Processing (ICGIP 2018), 1106936 (6 May 2019); https://doi.org/10.1117/12.2524241

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KEYWORDS

Calibration

Cameras

3D modeling

Reconstruction algorithms

Corner detection

3D image processing

Image processing

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