Vision measuring method for spaced round geometrical parameters

A stereoscopic vision measurement and space technology, applied in the field of measurement, can solve the problems of not realizing circle radius measurement, etc., and achieve the effect of reducing measurement error, improving the degree of automation, and broadening the scope of application

Inactive Publication Date: 2005-01-19
HUANGSHI BANGKE TECH CO LTD
View PDF0 Cites 65 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the plane where the circular hole is located is at a large angle to the two image planes of the sensors that make up the stereo vision, due to the shape distortion of

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
  • Vision measuring method for spaced round geometrical parameters
  • Vision measuring method for spaced round geometrical parameters
  • Vision measuring method for spaced round geometrical parameters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0069] According to the steps described above, use two Mintong 368P CCD cameras and a 25mm Japan Seiko lens to form a binocular stereo vision sensor, and measure a circular hole with a diameter of D = 45.50mm. first use figure 1 The shown planar calibration target calibrates the CCD camera and the structured light vision sensor, and the distance between adjacent feature points in the planar target is 9±0.005mm. The obtained calibration parameters are:

[0070] Internal parameters of the left camera: A l = 4215.176 0 253.506 0 4203.932 383.968 0 0 1 ...

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

This invention belongs to measuring technique field and relates to improvement for space round geometry parameters non-contact measuring method. This invention can calculate eh real three dimensional coordinates of round fringe by use of polar line restriction and calculate space round geometry parameters based on space round optimal fit. This invention reduces the measuring error caused by shape distortion of space round perspective projecting and increases the measuring accuracy of round geometry parameters based on the optical method. When the surface of space round to be measured is angle more than fifty degrees, the repeatability accuracy 3sigma of space round geometry center is superior to minus or plus 0.01 mm.

Description

technical field [0001] The invention belongs to the technical field of measurement and relates to the improvement of a non-contact measurement method for geometric parameters of a space circle. Background technique [0002] A circle is the basic geometric shape of an object, such as various workpieces, positioning holes on parts, etc. The three-dimensional space position of the geometric center of these round holes and the accuracy of the radius of the circle have a great influence on the successful installation of parts and the overall positioning of the object. Significance. The geometric parameters of the general round hole space can be measured by a three-coordinate measuring machine. The accuracy of the three-coordinate measuring machine can meet the accuracy requirements of the circle in most occasions. It cannot meet the needs of the installation site, especially the measurement of large round holes. Visual inspection technology is the most promising new technology ...

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): G01B11/03G02B27/22G06T15/00H04N5/225
Inventor 周富强张广军
Owner HUANGSHI BANGKE TECH CO LTD
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