Supercharge Your Innovation With Domain-Expert AI Agents!

Self-calibrating, multi-camera machine vision measuring system

A technology of measuring systems and machines, applied in the direction of radio wave measuring systems, measuring devices, instruments, etc., can solve the problems of wasting time, high cost, clumsiness, etc.

Inactive Publication Date: 2007-10-31
SNAP ON INC
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It's time consuming, costly and clumsy

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
  • Self-calibrating, multi-camera machine vision measuring system
  • Self-calibrating, multi-camera machine vision measuring system
  • Self-calibrating, multi-camera machine vision measuring system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] A method and apparatus for automatic calibration of a machine vision measurement system containing more than one camera is described below. In the following text description, for purposes of explanation, various specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to avoid unnecessarily obscuring the understanding of the present invention.

[0036] Structure overview

[0037]Figure 1 is a schematic top view of certain units ("locators") in a computer-aided 3D automotive wheel alignment system. It generally comprises a left camera module 2 and a right camera module 4, which are used to align and position the wheels of the motor vehicle. Such a locator is an example of a machine vision measurement ...

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

An apparatus and method for calibrating machine vision measuring systems that have more than one camera are disclosed. A first calibration target is mounted in a fixed relationship to a first camera of the machine vision measuring system. A third camera mounted in a fixed relationship to a second camera of the machine vision measuring system. Second and third calibration targets are mounted in a fixed relationship to one another and viewable by the first camera and by the third camera. A data processor is programmed to compute calibration of the first camera and the second camera, based on a position of the second calibration target relative to the third calibration target and based on a position of the first camera with respect to the third camera. The apparatus and method provide a way to continuously measure the positions of two or more cameras used in the measuring system, and to use such measurements to calibrate the system. If the cameras move with respect to each other, their respective positions are calculated and used in subsequent measurements. The apparatus and method enable a machine vision measuring system to be used without field calibration at the time of installation.

Description

[0001] The present invention is a divisional application of the national application number 01807078.7 (PCT / US01 / 08584) filed on March 16, 2001, entitled "self-calibration, multi-camera machine vision measurement system". technical field [0002] The present invention relates generally to aligned machine vision measurement systems containing more than one camera, and more particularly to camera aligners that perform dynamic alignment without the need to know the exact positional relationship between the alignment camera and the alignment camera / target. Background technique [0003] Machine vision measurement systems containing more than one camera have been used in many places. For example, a computer-aided three-dimensional (3D) machine vision positioning device and related positioning method can be used to position the vehicle wheels on the positioning frame. A number of An example of a method and apparatus useful in 3D positioning of a motor vehicle. The devices describ...

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 Patents(China)
IPC IPC(8): G01B11/275B25J9/16G01C11/06G01S5/16
Inventor 戴维·A·杰克逊迈克尔·J·罗布唐纳德·L·瓦尔查克
Owner SNAP ON INC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com