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

Fisheye camera calibration method and device

A fisheye camera and calibration method technology, applied in image data processing, instrumentation, calculation and other directions, can solve the problems of poor calibration result accuracy and low applicability, etc.

Active Publication Date: 2015-03-04
KUNSHAN BRANCH INST OF MICROELECTRONICS OF CHINESE ACADEMY OF SCI
View PDF5 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of existing calibration technology is limited by the requirements of camera types and special calibration equipment, and the applicability is low; or limited by the calibration calculation model, the accuracy of the calibration results is poor

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
  • Fisheye camera calibration method and device
  • Fisheye camera calibration method and device
  • Fisheye camera calibration method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0052] As mentioned in the background art, the application of a fisheye camera often requires setting precise parameters of the fisheye camera, that is, calibration is required. The accuracy of fisheye camera calibration results = directly affects the accuracy of its derivatives, therefore, calibration technology has received widespread attention. However, the use of existing calibration technology is limited by the camera type and the requirement...

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 fisheye camera calibration method and device. The method includes the steps of establishing an imaging model of a fisheye camera, collecting multiple calibration plate images at different view angles, obtaining coordinates of feature points from the calibration plate images, adjusting the coordinates of the feature points according to the formats of the calibration plate images, determining world coordinates of the feature points according to the preset laws of the feature points in the calibration plate images, calculating the initial values of the distortion center deflection of the calibration plate images with the RMS reprojection error as the evaluation value, minimizing the RMS reprojection error, and optimizing internal parameters and external parameters. In this way, no special calibration devices need to be adopted for the technical scheme, the fisheye camera calibration method and device can be suitable for most fisheye cameras, and the applicability of the calibration method and the accuracy of the calibration result are improved.

Description

technical field [0001] The invention relates to the technical field of fisheye cameras, and more specifically, to a calibration method and a calibration device for a fisheye camera. Background technique [0002] In recent years, because the fisheye camera can provide a 180-degree field of view, it has been widely used in many fields, for example, in robot navigation, 3D modeling, driving safety and other fields. However, while the fisheye camera provides a wide-angle field of view, it is accompanied by fisheye distortion of the image. Therefore, the application of the fisheye camera often requires setting the precise parameters of the fisheye camera, that is, calibration. The accuracy of fisheye camera calibration results directly affects the accuracy of its derivatives, therefore, calibration technology has received widespread attention. However, the use of existing calibration technology is limited by the camera type and the requirements of special calibration equipment, ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T7/80
Inventor 徐以强李庆闫硕梁艳菊秦瑞高荣鲁斌常嘉义陆菁
Owner KUNSHAN BRANCH INST OF MICROELECTRONICS OF CHINESE ACADEMY OF SCI
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