Fisheye camera calibration system, method and device, electronic equipment and storage medium

Abstract

The invention discloses a fisheye camera calibration system, method and device, electronic equipment and a storage medium. The system comprises a hemispherical target, a fisheye camera and electronicequipment, wherein the hemispherical target comprises a hemispherical inner surface and a plurality of mark points arranged on the hemispherical inner surface; the fisheye camera is used for shootingthe hemispherical target and collecting a target image, and the target image comprises the hemispherical target and images of a plurality of mark points arranged on the hemispherical inner surface ofthe hemispherical target; the electronic equipment is used for obtaining initial values of k1, k2, k3, k4, k5, u0, v0, mu and mv, and Levenberg-Marquardt algorithm is used for optimizing initial values of k1, k2, k3, k4, k5, u0, v0, mu and mv to determine imaging model parameters of the fisheye camera. Through the hemispherical target, a plurality of target images are acquired without moving the target or a camera, and rapid and high-precision calibration of the fisheye camera can be realized only by acquiring one target image.

Description

technical field [0001] The present application relates to the technical field of camera calibration, and more specifically, to a fisheye camera calibration system, method, device, electronic equipment, and storage medium. Background technique [0002] Camera calibration is one of the key technologies in machine vision, photogrammetry, 3D imaging, and image geometry correction. Its main function is to estimate the internal and external parameters of the camera. The accuracy of the calibration results and the stability of the calibration algorithm directly affect the accuracy of subsequent work. In the general calibration method, multiple images need to be collected, so it is necessary to manually move the calibration plate or the camera. In practical applications, it is not only time-consuming and laborious, but also increases the production cost. Contents of the invention [0003] The present application proposes a fisheye camera calibration system, method, device, electr...

AI Technical Summary

Problems solved by technology

In the general calibration method, multiple images need to be collected, so it is necessary to manually move the calibration plate or camera. In practical applications, it is not only time-consuming and laborious, but also increases the production cost.

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