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Computer Vision based measuring app

Main image

Introduction

This a computer vision based calibration app whose applications range from measurement of dimensions of critical parts to robotic hand-eye calibration.

Setup

The following libraries and softwares need to be installed to run the code:

  • Python3
  • OpenCV
  • Numpy
  • PIL
  • TKinter
  • OptParse
  • Math
  • CSV

Instructions for Use

Run

To start the app, run the following startscript:

./measure.sh

The script is structured in the following format:

python3 measurement.py -p <string Image-path> -s <float Scale-Factor> -t <string type("numpy","csv","tsv")> -c <int Space separated RGB code>

Measuring

Press the Measure button to start measuring distances.

  • Once in measure mode, select points on the displayed image using mouse clicks. This highlights the hole closest to the user’s choice. On choosing the second point, a line is drawn from start(Center of hole of start point) to goal (Center of hole of goal point) with the length of the line specified.
  • Any clicks beyond that over-write the second point.
  • The Clear button clears all the data and takes the user out of measure mode.
  • The 'Generate' button saves all the points selected by the user in one session in the appropriate format.

Results

Working GIF