Calibration system for vehicle shape detection structured light based on point-to-origin distance constraint

Abstract

The invention discloses a calibration system for automobile morphology detection structured light based on distance constraint from a point to an original point and aims to solve the problem that a laser plane equation under a world coordinate system cannot be directly obtained by the existing method at present. A camera calibrating target for an automobile vision inspection system based on spherical coordinates mainly comprises a three-dimensional calibrating plate (1) and a calibrating rod (2). The provided calibration system for the automobile morphology detection structured light based on distance constraint from the point to the original point has the advantages of simple structure, high detection precision, small accumulated error, complete functions, high simplicity and convenience for operation, easiness for mounting, high generality, lower cost and reliable performance; the non-contact detection requirement on an automobile body in the detection industry can be met.

Description

technical field [0001] The invention relates to a calibration device for detection equipment in the field of the automobile industry, and more specifically, it relates to a calibration system for structured light detection of vehicle shape detection based on distance constraints from a point to an origin. 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 overloading and size modification of the automobile reasonably and quickly, and to carry out the visual measurement of various geometric angles of the automobile. At present, the measurement of vehicle size and angle is mainly based on manual meter ruler measurement, which has low efficiency, poor accuracy and high labor intensity for staff. The use of machine vision measurement technology for non-contact detection of automotive geometric parameters is expected to solve the above technical bottlenecks due to...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the existing calibration method cannot directly obtain the laser plane equation in the world coordinate system, the present invention provides a method that can directly obtain the light plane position equation in the world coordinate system, has a simple structure, high calibration accuracy, small cumulative error, and functional A complete, easy-to-operate, easy-to-install, versatile, low-cost, and reliable performance-based calibration system for vehicle shape detection structured light based on point-to-origin distance constraints that can meet the requirements of the automotive inspection industry for visual detection of vehicle shape

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