System and method for measuring vision of variable optical axis

A visual measurement and boresight technology, applied in the field of visual measurement, can solve problems such as limiting the measurement range of the system, the limited number of boresight points, and reducing image resolution, so as to reduce the search range, expand the imaging field of view and measurement range, and ensure The effect of integration and economy

Active Publication Date: 2019-09-17
TONGJI UNIV
View PDF8 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common disadvantage of these methods is that the number of boresight points is limited, and all the target images collected under the boresight point share the imaging plane of the detector, which will inevitably reduce the image resolution and limit the measurement range of the system
In add

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
  • System and method for measuring vision of variable optical axis
  • System and method for measuring vision of variable optical axis
  • System and method for measuring vision of variable optical axis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0123] In this embodiment, the detailed steps of obtaining the three-dimensional contour information of the target by using the variable boresight visual measurement method are as follows:

[0124] S1. Key parameters of the calibration measurement system

[0125] S11. Establishing the camera coordinate system O C -X C Y C Z C , Prism coordinate system O P -X P Y P Z P and the world coordinate system O W -X W Y W Z W ;

[0126] S12. Separately calibrate the internal parameter matrix A of the industrial camera 1 using Zhang's plane calibration method int and distortion coefficient k 1 、k 2 ;

[0127] S13, install the adjustment mechanism 2 and the rotating prism device 3 carrying the industrial camera 1 on the base 5, and change the height and posture of the camera 1 through the camera adjustment mechanism 2, in order to ensure the axial alignment of the camera and the rotating prism Determine the relative rotation matrix R of the two based on PC and the relativ...

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 relates to a system and a method for measuring vision of a variable optical axis. The measuring system comprises a substrate, a camera, a rotary prism device and a computer, wherein the computer is connected with the camera and the rotary prism device respectively; the camera is arranged on the substrate through a camera adjusting mechanism; the rotary prism device is fixed on the substrate and aligns to the camera in the axial direction; an imaging plane of the camera and a prism plane of the rotary prism device are parallel to each other; and the rotary prism device comprises a prism capable of rotating in a complete cycle. Compared with the prior art, high-resolution target images can be collected by the camera under various optical axis pointing states respectively by sufficiently utilizing accurate pointing characteristic and wide-field scanning capacity of the rotary prism, the imaging view field and measuring range of the system can be enlarged obviously, relatively high imaging resolution and three-dimensional measurement accuracy are realized, and simultaneously, the integration and economical efficiency of system structure design also can be guaranteed.

Description

technical field [0001] The invention relates to the field of visual measurement, in particular to a variable visual axis visual measurement system and method. Background technique [0002] Visual measurement technology has the principle advantages of non-contact, high precision, strong real-time performance and rich information, and is widely used in the fields of automatic navigation, medical diagnosis, military reconnaissance and human-computer interaction. Especially in the field of advanced equipment manufacturing, visual measurement can provide important assistance and guidance for assembly line processing, automatic assembly, product quality inspection and other links on the industrial site. Traditional monocular vision measurement methods rely on prior information and external constraints, and are usually suitable for defect detection or orientation measurement of planar targets; binocular or multi-eye vision measurement methods have the problem of mutual constraints ...

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): G01B11/00G01B11/25
CPCG01B11/002G01B11/25
Inventor 李安虎
Owner TONGJI 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