Image Distortion and Rectification Calibration Algorithms and Validation Technique for a Stereo Camera

• Main Authors: Jonguk Kim, Hyansu Bae, Suk Gyu Lee
• Format: Article
• Language: English
• Published: MDPI AG 2021-02-01
• Series: Electronics
• Subjects: camera calibration; stereo camera; calibration board
• Online Access: https://www.mdpi.com/2079-9292/10/3/339

This paper focuses on the calibration problem using stereo camera images. Currently, advanced vehicle systems such as smart cars and mobile robots require accurate and reliable vision in order to detect obstacles and special marks around. Such modern vehicles can be equipped with sensors and cameras together or separately. In this study, we propose new methodologies of stereo camera calibration based on the correction of distortion and image rectification. Once the calibration is complete, the validation of the corrections is presented followed by an evaluation of the calibration process. Usually, the validation section is not jointly considered with the calibration in other studies. However, the mass production of cameras widely uses the validation techniques in calibrations owned by manufacturing businesses. Here, we aim to present a single process for the calibration and validation of stereo cameras. The experiment results showed the disparity maps in comparison with another study and proved that the proposed calibration methods can be efficient.