Camera calibration board, calibration data acquisition method, distortion correction method and device

A camera calibration and data acquisition technology, applied in image data processing, instruments, calculations, etc., can solve the problems of unguaranteed accuracy, increased labor costs, and many operation steps, to improve efficiency, improve accuracy, and ensure stability. sexual effect

Active Publication Date: 2019-11-15
MEGVII BEIJINGTECH CO LTD
View PDF6 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when factory production is to be carried out, labor costs will increase significantly due to many operating steps, and the efficiency will be low

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
  • Camera calibration board, calibration data acquisition method, distortion correction method and device
  • Camera calibration board, calibration data acquisition method, distortion correction method and device
  • Camera calibration board, calibration data acquisition method, distortion correction method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0066] Embodiments according to the present invention will be described in detail below with reference to the drawings. When the description refers to the drawings, the same reference numerals in different drawings indicate the same or similar elements unless otherwise indicated. It should be noted that the implementations described in the following exemplary embodiments do not represent all implementations of the present invention. They are merely examples of apparatuses and methods consistent with aspects of the disclosure as recited in the claims, and the scope of the invention is not limited thereto. On the premise of no contradiction, the features in the various embodiments of the present invention can be combined with each other.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, 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 relates to a camera calibration board, a calibration data acquisition method and a distortion correction method and device, and relates to the technical field of machine vision, and themethod comprises the steps: collecting a checkerboard image through employing the camera calibration data acquisition method, and obtaining the serial numbers of all image corners in the checkerboardimage and the corresponding three-dimensional coordinates; selecting a plurality of angular points in the center of the checkerboard image, and determining the three-dimensional coordinates corresponding to the plurality of angular points; and optimizing the initial distortion parameter to obtain an optimized distortion parameter, and performing distortion correction according to the calculated optimized distortion parameter. Only one checkerboard image needs to be collected, and one-to-one correspondence of collected image corners and three-dimensional coordinates is completed through specialfixed corners. An ideal image corner is obtained to calculate an initial distortion parameter of the camera, and an accurate distortion parameter is obtained for correction after optimization. The accuracy of distortion correction is improved, the operation process is simplified, and the method is suitable for rapid production.

Description

technical field [0001] The invention relates to the technical field of machine vision, in particular to a camera calibration board, a calibration data acquisition method, a distortion correction method and a device. Background technique [0002] With the development of computer science and technology, machine vision (Machine Vision) has become one of the research hotspots in the field of image processing. The human visual system can perceive the three-dimensional world from two-dimensional images and obtain information about the three-dimensional world. The research goal of machine vision is to enable the computer to recognize the surrounding environment information through one or more images. With the continuous development of machine vision theory, its application field is also expanding rapidly, and has been widely used in traffic navigation, site survey, automatic production and virtual reality and other fields. [0003] To restore the three-dimensional information of ...

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
CPCG06T7/80G06T2207/30208
Inventor 胡刚
Owner MEGVII BEIJINGTECH 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