Automobile feature point visual reconstruction system and method based on one-dimensional reference object

Abstract

The invention discloses an automobile feature point visual reconstruction system and method based on a one-dimensional reference object, and aims to solve the problem of automobile feature point visual detection based on the one-dimensional reference object. The automobile feature point visual reconstruction system based on the one-dimensional reference object is mainly composed of a line laser (1), a demarcation device sleeve (2), a one-dimensional target (3), a spherical fixing frame (4), a triangular frame (5) and a camera (6). The spherical fixing frame (4) is formed by welding a hollow iron ball and a rectangular steel plate, wherein a surface of the hollow iron ball is provided with a set of circular through holes with axes penetrating through the center of the ball, and a surface ofthe rectangular steel plate is provided with four through holes. The one-dimensional target (3) penetrates into the spherical fixing frame (4) through the circular through holes of the spherical fixing frame (4) and is in transition fit with the spherical fixing frame (4), and the spherical fixing frame (4) is fixedly connected with foundation bolts on the ground through the four through holes inthe rectangular steel plate. The automobile feature point visual reconstruction system and method based on the one-dimensional reference object are simple in structure and reliable in performance.

Description

technical field [0001] The invention relates to a vehicle detection device and detection method, more specifically, a system and method for visual reconstruction of vehicle feature points based on one-dimensional reference objects. Background technique [0002] As an important link in the field of traffic detection, vehicle feature point reconstruction has important application prospects in the aspects of vehicle shape position deviation, wheelbase difference, shape reconstruction, vehicle classification, overloading and illegal modification, etc. The camera calibration based on the 2D plane in the existing reconstruction technology needs to display the plane pattern in several different directions, and the constraint equation is established by using the property of the unit orthogonal matrix. The calibration accuracy is limited by the measurement distance and the number of collected images; binocular vision In the 3D survey coordinate system of , the distance error between ...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at solving the reconstruction error problem in the process of vehicle reconstruction, and provides a reliable visual reconstruction method of vehicle feature points based on one-dimensional reference objects, and uses one-dimensional target 3 with known distance target points to perform camera 6 calibration

Images