A Video Optical Extensometer Based on Virtual Instrument

  • Yuanyin Wang
  • Shaopeng Ma
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 126)


A video optical extensometer based on the virtual instrument LabVIEW Vision software platform is developed in this paper. A general CCD camera DH-HV-1303UM with Dynamic Link Library is used to complete real-time image acquisition and LabVIEW Vision platform is used to complete image processing. The algorithm of the center of gravity is adopted for the displacement measurement. This smart extensometer shows the high ratio of performance to price and reliability. A calibration experiment is completed and if resolution large than 0.05 pixel, the relative error is less than 3.5%.


Marker Point Calibration Experiment Maximum Relative Error Virtual Instrument Video Extensometer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Blume, P.A.: The Labview Style Book, pp. 100–115. Publishing House Of Electronics Industry, Beijing (2009); Tranlate by Liu, Z.F., Yi, F.Z.Google Scholar
  2. 2.
    Wang, H.W., Kong, Y.L.: Digital marker recognition method and it’s application of material behavior. Experimental Mechanics 17, 434–437 (2004) (in Chinese) Google Scholar
  3. 3.
    Kenneth, R.C.: Digital Image Processing, pp. 68–90. Publishing House of Electronics Industry, Beijing (2002); Translate by Zhu, Z.G. Google Scholar

Copyright information

© Springer-Verlag GmbH Berlin Heidelberg 2012

Authors and Affiliations

  • Yuanyin Wang
    • 1
  • Shaopeng Ma
    • 1
  1. 1.School of Aerospace EngineeringBeijing Institute of TechnologyBeijingChina

Personalised recommendations