Multi-camera internal and external parameter calibration method based on three-point calibration object

A calibration method and a technology of internal and external parameters, applied in image data processing, instruments, calculations, etc., can solve the problems of increased difficulty, single camera angle of view cannot meet the expectations of a large-scale three-dimensional space, and low calibration accuracy, so as to achieve simple production and operability Strong performance and good algorithm robustness

Inactive Publication Date: 2017-11-17
北京轻威科技有限责任公司
View PDF6 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, with the vigorous development of virtual reality, the perspective of a single camera cannot meet people's expectations for a large-scale three-dimensional space, and multi-camera combination and calibration have gradually become a new...

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
  • Multi-camera internal and external parameter calibration method based on three-point calibration object
  • Multi-camera internal and external parameter calibration method based on three-point calibration object
  • Multi-camera internal and external parameter calibration method based on three-point calibration object

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] like Figures 1 to 5 As shown, the preferred embodiment of the present invention provides a method for calibrating internal and external parameters of a multi-camera based on a three-point calibrator, the method comprising the following steps:

[0042] S10: pixel data collection. The step S10 specifically includes:

[0043] S11, such as Figure 4 In the calibration scene shown, freely swing the T-shaped calibration rod equipped with three collinear infrared reflective points to control multiple cameras to collect calibration point data synchronously;

[0044] S12, placing an L-shaped rigid body with known side lengths in the center of the site, and controlling multiple cameras to collect rigid body data synchronously. ...

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 multi-camera internal and external parameter calibration method based on a three-point calibration object. The method comprises steps of S10, image point data acquisition; S20, every-two-camera internal and external parameter calibration; S30, multi-camera internal and external parameter calibration under a unified reference camera coordinate system; and S40, multi-camera internal and external parameter calibration under a designated world coordinate system. The method is advantaged in that a calibration tool is simple to make, limiting the calibration objects to move in a public view field of all the cameras is not needed, strong operability is realized, a multi-camera cascade path is determined through utilizing the common view field relationship, more image points participate into operation, and algorithm robustness is better.

Description

technical field [0001] The invention belongs to the technical field of computer vision and camera calibration, and in particular relates to a multi-camera internal and external parameter calibration method based on three-point calibration objects. Background technique [0002] Camera calibration technology uses the 2D image of the calibrated object to recover the internal and external parameters of the camera, and then reconstructs the 3D information of the scene. It is a key step in the field of computer vision and a prerequisite for the application of visual sensors in various fields. and other fields have a wide range of applications. [0003] In recent years, with the vigorous development of virtual reality, the perspective of a single camera cannot meet people's expectations for a large-scale three-dimensional space, and multi-camera combination and calibration have gradually become a new research hotspot. However, the existing multi-camera calibration methods often re...

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 郭路晗黄永鑫
Owner 北京轻威科技有限责任公司
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