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

Zoom pan-tilt camera calibration method and device and storage medium

A calibration method and camera technology, applied in the field of computer vision, can solve problems such as low calibration efficiency

Pending Publication Date: 2020-10-23
ZHEJIANG DAHUA TECH CO LTD
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the calibration of the zoom pan / tilt camera often needs to rely on reference objects such as calibration boards, and the calibration efficiency is 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
  • Zoom pan-tilt camera calibration method and device and storage medium
  • Zoom pan-tilt camera calibration method and device and storage medium
  • Zoom pan-tilt camera calibration method and device and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The solutions of the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, for purposes of illustration rather than limitation, specific details, such as specific system architectures, interfaces, and techniques, are set forth in order to provide a thorough understanding of the present application.

[0024] The terms "system" and "network" are often used interchangeably herein. The term "and / or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character " / " in this article generally indicates that the contextual objects are an "or" relationship. In addition, "many" herein means two or more than two.

[0025] The zoom pan / tilt camera incl...

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 provides a zoom pan-tilt camera calibration method and device and a storage medium. The calibration method comprises the steps of obtaining a first image at a first position and a secondimage at a second position under the same multiplying power, and the first image and the second image have an overlapped view field; extracting a plurality of first feature points of the first imageand a plurality of second feature points of the second image, and matching the plurality of first feature points with the plurality of second feature points to obtain a plurality of groups of featurepoint pairs; according to the multiple sets of feature point pairs and the camera imaging model, constructing multiple sets of unary quadratic equations with the focal length initial value as a dependent variable, and obtaining calibration parameters under the same multiplying power by solving the unary quadratic equations. According to the calibration method provided by the invention, the solvingprocess is simplified, and the calibration efficiency and flexibility are improved.

Description

technical field [0001] The invention relates to the technical field of computer vision, in particular to a calibration method, calibration equipment and a storage device for a zoom pan-tilt camera. Background technique [0002] The zoom pan-tilt camera (Pan-Tilt-Zoom, PTZ) can automatically adjust and control the focus distance, attitude, aperture, etc., and has the characteristics of flexibility, large field of view, and strong adaptability to lighting conditions. It has been widely used in various fields such as electronic security, robot navigation, and intelligent space. In the prior art, the calibration of the zoom pan / tilt camera often needs to rely on reference objects such as a calibration board, and the calibration efficiency is low. [0003] Therefore, in order to solve the above problems, it is necessary to provide a new calibration method, calibration equipment and storage medium for the zoom pan-tilt camera. Contents of the invention [0004] To achieve the ...

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): G06T7/80
CPCG06T7/80
Inventor 何曾范
Owner ZHEJIANG DAHUA 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