Cylindrical surface coordinate based camera calibration target of automobile vision detection system

A camera calibration and visual inspection technology, applied to measuring devices, instruments, optical devices, etc., can solve problems such as inability to obtain data points, achieve light weight, simple production, and reduce the difficulty of transportation and use

Inactive Publication Date: 2014-12-03
JILIN UNIV
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problem that the existing three-dimensional calibration objects can only directly obtain the three-dimensional data points in the Cartesian three-dimensional Cartesian coordinate system, but cannot obtain the data points determined by the cylinder radius and angle in the cylindrical coordinate system, and provides a A kind of cylindrical coordinates that can directly obtain the data points of the general positio...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cylindrical surface coordinate based camera calibration target of automobile vision detection system
  • Cylindrical surface coordinate based camera calibration target of automobile vision detection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0017] refer to Figure 1 to Figure 2 , the camera calibration target of the automobile vision inspection system based on cylindrical coordinates includes a base 1 and a cylindrical coordinate surface 2 .

[0018] The base 1 is a 90° fan-shaped thin-walled steel part and is tempered and blackened. The upper surface of the base 1 is processed with a fine fan-shaped groove, and the inner surface of the groove is electroplated. The end of the groove points to the fan-shaped center of the base 1. The cylindrical coordinate surface 2 is Quarter-cylindrical thin-walled steel parts are tempered and blackened, the lower surface of the cylindrical coordinate plane 2 is perpendicular to the busbar, and the inner surface of the cylindrical coordinate plane 2 is uniformly processed along the direction of the busbar and the vertical direction of the busbar. The inner surface of th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a cylindrical surface coordinate based camera calibration target of an automobile vision detection system, for the purpose of solving the problem that a conventional three-dimensional calibration object can only directly obtain three-dimensional data points under the condition of a Descartes three-dimensional rectangular coordinate system and cannot obtain data points decided by a cylindrical surface radius and an angle under the condition of a cylindrical surface coordinate system. The cylindrical surface coordinate based camera calibration target of the automobile vision detection system is mainly composed of a base (1) and a column coordinate surface (2). The cylindrical surface coordinate based camera calibration target of the automobile vision detection system has the advantages of simple structure, high detection precision, small accumulation errors, complete functions, simple operation, easy installation, high versatility, quite low cost and reliable performance, and can satisfy the requirement for visual sense detection of an automobile body in the automobile detection industry.

Description

technical field [0001] The invention relates to an inspection device in the field of automobile industry, more specifically, it relates to a camera calibration target of an automobile visual inspection system based on cylindrical coordinates. 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 its characteristics of fast, accurate and high reliability. Si...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01B11/26
Inventor 戴建国潘嵩岩徐观苏建李晓韬陈熔潘洪达张立斌刘玉梅林慧英卢雪孙丽娜刘换平郝照冰王启明张益瑞
Owner JILIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap