Three-dimensional calibrating target for laser scanning plane of active vision measurement of automobile morphology

Abstract

The invention discloses a three-dimensional calibrating target for a laser scanning plane of active vision measurement of automobile morphology, and aims to solve the problem that laser planar calibration of an active vision measurement system of automobile morphology cannot be realized by adopting the three-dimensional calibrating target to collect an image by a camera. The three-dimensional calibrating target for the laser scanning plane of active vision measurement of automobile morphology consists of a target frame (1), a steel wire rope (2), a double-screw bolt (3) and a bolt (4). The invention provides the three-dimensional calibrating target for the laser scanning plane of active vision measurement of automobile morphology, wherein the base level of a target coordinate system can be superposed with that of a world coordinate system of a detection line and calibration can be realized by collecting one image. The three-dimensional calibrating target for the laser scanning plane of active vision measurement of automobile morphology is simple in structure, high in detection precision, small in accumulated error, integral in function, simple and convenient to operate, easy to install, strong in universality and reliable in performance and can satisfy the quick calibration demand on the laser scanning plane of active vision measurement of automobile morphology in the automobile detection industry.

Description

technical field [0001] The invention relates to a calibration instrument for detection equipment in the field of automobile industry, more specifically, it relates to a laser scanning plane three-dimensional calibration target for active visual measurement of automobile topography. Background technique [0002] In order to ensure the safe driving of the car, it is one of the main inspection items in the field of automobile inspection to detect the overload and size modification of the automobile reasonably and quickly, and to measure the shape and size of the automobile body. At present, the measurement of vehicle size is mainly based on manual meter measurement, which has low efficiency, poor accuracy, and high labor intensity for staff. The method of scanning the car body with a laser plane and collecting the car image through the camera to realize the measurement of the shape and size of the whole vehicle is expected to solve the above technical bottlenecks due to its cha...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the present situation that the laser scanning plane of the active visual measurement of the vehicle shape cannot be calibrated at one time using a three-dimensional calibration target, and provides a method that can make the reference plane of the coordinate system of the calibration plate and the world coordinate system of the detection line The reference plane coincides, and the calibration can be completed by collecting an image. The structure is simple, the detection accuracy is high, the cumulative error is small, the function is complete, the operation is simple, the installation is easy, the versatility is strong, and the performance is reliable. Laser scanning plane for visual measurement for rapid calibration 3D calibration target for laser scanning plane for active visual measurement of automobile shape

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