Improved separated-parameter calibration method for binocular vision measurements with a large field of view | Zendy

Yang Zhang | Zendy; Wei Liu | Zendy; Fuji Wang | Zendy; Yongkang Lu | Zendy; Wenqi Wang | Zendy; Fan Yang | Zendy; Zhenyuan Jia | Zendy

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Improved separated-parameter calibration method for binocular vision measurements with a large field of view

Author(s) -

Yang Zhang,

Wei Liu,

Fuji Wang,

Yongkang Lu,

Wenqi Wang,

Fan Yang,

Zhenyuan Jia

Publication year - 2020

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.379099

Subject(s) - calibration , field of view , computer science , optics , stereoscopy , computer vision , artificial intelligence , binocular vision , camera resectioning , physics , quantum mechanics

Large field-of-view (FOV) calibration is indispensable to ensure the accuracy of vision measurement systems for large aviation components. We propose an improved separated-parameter calibration method for large-FOV binocular vision measurements with a high flexibility and accuracy. Firstly, the camera parameters are separately calibrated according to the sub-area features of image. Subsequently, based on the spatial-calibration accuracy, a stereoscopic calibration object is devised. The mean error of the proposed method is experimentally obtained as 0.13 mm for a FOV of 2.0 m × 1.5 m. Its feasibility and effectiveness for the measurement in the field is validated by workshop calibration.

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