Investigation of Factors Influencing Calibration Accuracy of Camera

Abstract:

Camera calibration is the basis of vision-based 3D measurement. While many calibration methods have been proposed, the problem encountered in the practice of camera calibration is how to get accurate calibration parameters, which is seldom involved in references. This paper is focused on investigation of main factors influencing calibration accuracy, including manufacturing error of calibration rig, extracting error of control point and their combination. Based on the popular calibration method, simulation experiments are conducted at different error level, and the results show that the extracting error of control point has greater effect on calibration accuracy than manufacturing error of calibration rig. The manufacturing tolerance of calibration rig and extracting tolerance of control point is suggested to satisfy usual machine vision application.

• Periodical: Advanced Materials Research (Volumes 712-715)
• Pages: 2331-2335
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.712-715.2331
• Online since: June 2013
• Authors: Jian Hua Wang, Yu Ping Wu, Zhao Yang
• Keywords: Accuracy, Camera Calibration, Extracting Error of Control Point, Manufacturing Error of Calibration Rig

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