Electronic Distortion Coefficient Measuring Instrument for Automobile Shape Measuring System

Abstract

The invention discloses an electronic type distortion factor measuring instrument of an automobile morphology measuring system and aims to solve the problem that a distortion factor of a camera lens of an automobile morphology visual detection system cannot be measured simply and conveniently. The electronic type distortion factor measuring instrument of the automobile morphology measuring system mainly comprises a triangular steel frame (1), a steel wire (2), a long sleeve (3), an adjusting stud (4), a short sleeve (5), an encoder bracket (6), an encoder (7) and a sliding steel sheet (9), wherein the adjusting stud (4) controls stretching of the steel wire, and the distortion factor is obtained according to steel wire displacement measured by the encoder (7). The electronic type distortion factor measuring instrument of the automobile morphology measuring system is simple in structure, high in detection precision, simple and convenient to operate, easy to mount, lower in cost and reliable in performance.

Description

technical field [0001] The invention relates to a verification device for a detection device in the field of the automobile industry, more specifically, it relates to an electronic distortion coefficient measuring instrument for an automobile shape measurement system. Background technique [0002] The ideal imaging model of the automobile body shape detection system is linear, but due to the nonlinear distortion of the camera lens, the pixels in the actual collected image cannot correspond to the pixels of the ideal image one by one, and the outline and shape of the object will change. Bending changes, which will reduce the measurement accuracy and affect the 3D reconstruction of the car body. At present, the generated image is processed, and the distortion parameter model of the camera is calibrated, which is complex and requires a large amount of calculation. By adjusting the steel wire, the spatial straight line on the image is corrected to become a straight line, and th...

AI Technical Summary

Problems solved by technology

[0002] The ideal imaging model of the automobile body shape detection system is linear, but due to the nonlinear distortion of the camera lens, the pixels in the actual collected image cannot correspond to the pixels of the ideal image one by one, and the outline and shape of the object will change. Bending changes, which will reduce the measurement accuracy and affect the 3D reconstruction of the car body

At present, the generated image is processed to calibrate the distortion parameter model of the camera, which is complex and requires a large amount of calculation.

Images