Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Calibration plate and calibration method

A calibration method and calibration board technology, applied in image analysis, instruments, calculations, etc., can solve the problems of increasing the production cost of calibration boards, and achieve the effects of avoiding data errors in reading two-dimensional codes, saving costs, and ensuring accuracy

Pending Publication Date: 2021-01-05
HANGZHOU HIKROBOT TECH CO LTD
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when making this kind of calibration board, it is necessary to use two-dimensional code generation software, thereby increasing the production cost of the calibration board

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
  • Calibration plate and calibration method
  • Calibration plate and calibration method
  • Calibration plate and calibration method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0073] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0074] figure 1 A schematic diagram of an embodiment of the calibration plate of the present invention is shown, figure 2 A schematic diagram showing another embodiment of the calibration plate of the present invention, image 3 A specific embodiment of the positioning reference graphic unit in the calibration plate of the present invention is shown, Figure 4 Another specific embodiment of the positioning reference graphic unit in the calibration plate of the present invention is shown, wherein, image 3 The positioning datum graphic unit shown is figure 1 The positioning reference graphics unit used in , Figure 4 The positioning datum graphic unit shown is figure 2 The positioning reference graphics unit used in .

[0075] Such as figure...

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 calibration plate and a calibration method using the calibration plate. The calibration plate comprises: a substrate; a feature pattern which is printed on the surface of thesubstrate and is provided with a plurality of feature points; a positioning reference pattern unit printed on the substrate and surrounded by the feature pattern, wherein the positioning reference pattern unit comprises a static area; a orientation frame which is embedded in the static area; a central block which is positioned in the center of the inner region of the orientation frame and is positioned at any feature point in the feature pattern; and a coding matrix which is positioned in the internal region of the orientation frame and records the set coordinates of the central block. According to the calibration board and the calibration method, the positioning reference graphic unit containing the direction information and the index coordinate information is embedded into the characteristic pattern of the calibration board, the calibration board adopting a two-dimensional code for calibration is replaced, and the cost required by adopting two-dimensional code generation software issaved.

Description

technical field [0001] The invention relates to the technical field of machine vision, in particular to a calibration board and a calibration method. Background technique [0002] In the image measurement process and machine vision applications, in order to determine the relationship between the three-dimensional geometric position of a point on the surface of a space object and its corresponding point in the image, it is necessary to establish a geometric model of camera imaging, and these geometric model parameters are camera parameters. Under most conditions, these parameters must be obtained through experiments and calculations, and the process of solving these parameters is called camera calibration (or camera calibration). Whether it is in image measurement or machine vision applications, the calibration of camera parameters is a very critical link. The accuracy of calibration results and the stability of algorithms directly affect the accuracy of camera work results. ...

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): G06T7/80
CPCG06T7/80
Inventor 邓志辉王毅周杨
Owner HANGZHOU HIKROBOT TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com