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

Real-time three-dimensional measurement method based on color sine structured light coding

A structured light and color technology, applied in the field of optical three-dimensional sensing, can solve the problems of unstable phase expansion, low measurement accuracy, and weak anti-interference ability, and achieve real-time high-precision three-dimensional measurement, good robustness, and high three-dimensional The effect of measurement accuracy

Active Publication Date: 2014-08-06
SICHUAN UNIV
View PDF8 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method that combines color-coded phase measurement profilometry with passive stereoscopic Combined real-time three-dimensional measurement method, this method can achieve high three-dimensional measurement accuracy while ensuring real-time performance

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
  • Real-time three-dimensional measurement method based on color sine structured light coding
  • Real-time three-dimensional measurement method based on color sine structured light coding
  • Real-time three-dimensional measurement method based on color sine structured light coding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The present invention will be described in further detail below in conjunction with the accompanying drawings and working principles.

[0011] attached figure 1 It is a structural diagram of the three-dimensional measurement system of the present invention. The device used has a CASIO XJ-M140 projector, and the projector buffer frame size is pixels, the maximum output frequency of the projector is 150 frames / s; 2 Prosilica GC650 industrial cameras, the resolution is pixels, and the maximum capture frequency of the camera is 62 frames / s. 1 computer with Core i3 3530 CPU, 4GB RAM. The computer controls the structured light projection and shooting process.

[0012] attached figure 2 It is a working flow chart of the real-time three-dimensional measurement method based on color sinusoidal structured light encoding in this embodiment. The specific implementation steps of this example are as follows:

[0013] (1) Calibrate the two cameras, and the size of the two ca...

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 real-time three-dimensional measurement method based on color sine structured light coding in the three-dimensional sending technology. In the method, a single color sine structured light coding pattern is projected to the surface of an object through a projector; two camera shooting devices are utilized to record distorted color structured light images respectively, all the color structured light images are subjected to color separation, and then single-color structured light images corresponding to an R channel, a G channel and a B channel are obtained; the phase positions of the two camera shooting devices are calculated according to the single-color structured light images; phase matching is conducted according to the epipolar constraint relation between the two camera shooting devices, and then instantaneous three-dimensional coordinates of the surface of the object are obtained. Through the real-time three-dimensional measurement method based on color sine structured light coding, real-time three-dimensional measurement can be achieved; the method has the advantages of being good in robustness to unbalance of color brightness, coupling of color channels, nonlinearity of the projector and other interference factors, high in measurement accuracy and the like.

Description

technical field [0001] The invention relates to optical three-dimensional sensing technology, in particular to realizing real-time three-dimensional measurement on the surface of a target object by projecting a single color structured light coding pattern. Background technique [0002] The invention relates to a real-time optical three-dimensional measuring method. Real-time three-dimensional measurement technology can measure three-dimensional data on the surface of stationary objects and moving objects, and is basically not limited by the motion state of the measured object. Phase measuring profilometry (PMP) is a classic active three-dimensional measurement method, but this method needs to project three or more sinusoidal structured light patterns with phase shifts to the target object, which is difficult to meet the real-time requirements . In the paper "Color-encoded digital fringe projection technique for high-speed three-dimensional surface contouring [J]. Optical E...

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): G01B11/25
Inventor 刘凯龙云飞
Owner SICHUAN UNIV
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