University of illinois Urbana-Champaign

Image of the Week Gallery

Wheels of a Freight Train

Download original media

Media Details

Created 12/13/2001

Image of the wheels of a freight train with the wheel rim, bearing bolts, brake shoe, and spring locations identified using computer vision techniques. The image was taken by John M. Hart using the Nikon CoolPix995 at the Illinois Central maintenance facility in Champaign. Parts identified using algorithms developed by Nojun Kwak, visiting student to Prof Ahuja's Computer Vision and Robotics Laboratory. The results are part of a feasibility study for a cooperative effort with the Civil Engineering Department and the American Association of Railroads to automatically identify defective parts on moving freight cars.


  • John Hart , AI, Beckman Institute
  • Nojun Kwak , AI, Beckman Institute
Back to all images