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Calibration template, calibration method, calibration operation method and calibration system

A calibration template and technology to be calibrated, applied in image data processing, instruments, calculations, etc., can solve the problems of too many calibration pictures and not suitable for use, and achieve the effect of high accuracy, strong practicability and fast calibration speed.

Pending Publication Date: 2017-11-07
CHENGDU TOPPLUSVISION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Zhang Zhengyou’s calibration method needs to take too many calibration pictures, and one calibration needs to process multiple frames of images, which is not suitable for the situation where a large number of cameras need to be calibrated or only simple and fast calibration is desired.

Method used

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  • Calibration template, calibration method, calibration operation method and calibration system
  • Calibration template, calibration method, calibration operation method and calibration system
  • Calibration template, calibration method, calibration operation method and calibration system

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Embodiment Construction

[0061] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0062] Any feature disclosed in this specification (including any appended claims, abstract), unless otherwise stated, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0063] (1) Calibration template

[0064] The present invention proposes a calibration template, which mainly includes a calibration substrate 1 and at least two spherical calibration parts 2 connected to the calibration substrate 1, and several marking structures 3 are arranged on the calibration substrate 1, and the spherical calibration parts 2 and the logo structure 3 are on the same visible surface. The same visible surface means that the spherical calibration...

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Abstract

The present invention discloses a calibration template, a calibration method, a calibration operation method and a calibration system. A substrate to be calibrated and a calibration template matching with at least two spherical calibration pieces are subjected to camera calibration, a camera to be calibrated collects a calibration image facing the calibration template, the at least two spherical calibration pieces are projected to an ellipse in the imaging of the camera to be calibrated, the calibration image comprises an array image having a fixed spacing and at least two ellipses, the major axes of the at least two ellipses are interacted, the interaction is employed to calculate the main point coordinate parameters of the camera to be calibrated. The calibration template, the calibration method, the calibration operation method and the calibration system can complete camera calibration based on a calibration image and a calibration template, and is high in practicability, fast in calibration speed and high in precision, etc.

Description

technical field [0001] The present invention relates to the field of camera calibration, in particular to a calibration template, a camera calibration method based on a single frame image and a single calibration template, a camera calibration operation method based on a single frame image and a single calibration template, and a camera calibration method based on a single frame image and a single calibration template. Camera calibration system for single frame image and single calibration template. Background technique [0002] Camera calibration is a very important technology in image processing technology. In the process of image measurement 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 the camera imaging Geometric model, these geometric model parameters are camera parameters. Under m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80
CPCG06T7/80G06T2207/30208
Inventor 晁志超周剑王诚
Owner CHENGDU TOPPLUSVISION TECH CO LTD
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