Loading...
  • High Resolution Visual Measurement of Deformation & Strain.

    Brochure

  • Proven Technology Backed by Scientific Research in ISI Journals.

    Download the Paper

  • Use a Single Calibrated Camera to Measure within Field of View.

    See How

Services.


We provide laboratory services to help you measure with your camera.

Camera Calibration.

Cameras take images and give measurements in pixels. Calibration allows measuring in metric scale!

Motion Capture.

We can help you take images from fast or slow events under controlled lighting condition for research purposes.

Measure Deformation & Strain.

You may use our field-proven technology to measure deformation and strain in 2D within your field of view.

VSG Features.


Visual measurement requires the following conditions to provide output results:

Environment

Conditions

white light; no lasers required

no camera motion with respect to specimen

non-contact measurement with suitable lens

Specimen

Preparation

Simple preparation using paint

Sample size from 1cm to 5 m is possible

Very high strain and displacement is possible

Output

Results

Measure in-plane displacements and strains

Inspect at possibly all visible points of interest easily

Output results to Tecplot/Excel/Photoshop

History.


The VSG was initially developed for the International Institute of Earthquake Engineering and Seismology, Tehran, Iran. The software requires special lighting and controlled condition for optimal image capture. The software uses optical flow methods for computation of motion between consecutive image frames. This motion is then converted to strain and displacement fields in X and Y directions. The output is validated using experimental and numerical methods. Using a procedure called calibration, the camera can make metric measurements. The most important step in this technology is take suitable images during the process.