Abstract

The accuracy of binocular visual system calibration using the traditional method is poor in the depth direction. To enlarge the high-accuracy field of view (FOV) of a binocular visual system, a 3D spatial distortion model (3DSDM) based on the 3D Lagrange difference is proposed to minimize 3D space distortion. In addition, a global binocular visual model (GBVM) is proposed that contains the 3DSDM and a binocular visual system. The GBVM calibration method and 3D reconstruction method are based on the Levenberg–Marquardt method. Experiments were carried out to verify the accuracy of our proposed method by measuring the length of the calibration gauge in a 3D space. Experiments show that compared to traditional methods our method can improve the calibration accuracy of a binocular visual system. Our GBVM has a lower reprojection error, higher accuracy, and a larger working field.

© 2023 Optica Publishing Group

Calibration method for large-field-of-view stereo vision system based on distance-related distortion model

Xu Wang, Yang Gao, and Zhenzhong Wei
Opt. Express 31(13) 21816-21833 (2023)

High-precision binocular camera calibration method based on a 3D calibration object

Xiaowen Zhang, Tiegang Lv, Wang Dan, and Zhang Minghao
Appl. Opt. 63(10) 2667-2682 (2024)

LiDAR-assisted accuracy improvement strategy for binocular visual measurement

Junfeng Chen, Jingjing Bai, Yunpeng Cheng, Yunpeng Ma, and Qingwu Li
Appl. Opt. 62(9) 2178-2187 (2023)

Research on calibration of a binocular stereo-vision imaging system based on the artificial neural network

FangFang Han, YongXin Bian, Bin Liu, Qi Zeng, and YiFan Tian
J. Opt. Soc. Am. A 40(2) 337-354 (2023)

Precise and robust binocular camera calibration based on multiple constraints

Xia Liu, Zhenyu Liu, Guifang Duan, Jin Cheng, Xuetao Jiang, and Jianrong Tan
Appl. Opt. 57(18) 5130-5140 (2018)