Kang, Dong-Joong Ha, Jong-Eun Jeong, Mun-Ho 2024-01-20T22:34:12Z 2024-01-20T22:34:12Z 2021-09-03 2008-10 1598-6446 https://pubs.kist.re.kr/handle/201004/133117 This paper proposes a method to detect calibration patterns for accurate camera calibration Under complicated backgrounds and Uneven lighting conditions of industrial Fields. Required to measure object dimensions, the preprocessing of camera calibration must be able to extract calibration points From a calibration pattern. However, industrial fields for Visual inspection rarely provide the proper lighting conditions for camera calibration of a measurement system. In this paper, a probabilistic criterion is proposed to detect a local set of calibration Points, Which Would guide the extraction of other calibration points in a Cluttered background under irregular lighting conditions. If only a local part of the calibration pattern can be seen, input data can be extracted for camera calibration. In an experiment using real images, we verified that the method can be applied to camera calibration for poor quality images obtained under uneven illumination and Cluttered background. English INST CONTROL ROBOTICS & SYSTEMS, KOREAN INST ELECTRICAL ENGINEERS Detection of calibration patterns for camera calibration with irregular lighting and complicated backgrounds Article 1 INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS, v.6, no.5, pp.746 - 754 INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS 6 5 746 754 scie scopus kci ART001281354 000259604100013 2-s2.0-53549128941 Automation & Control Systems Automation & Control Systems Article camera calibration detection of calibration pattern length measurement system machine vision uneven illumination