Using Photometric Stereo Method in Evaluating the Volume of Potholes

The throw-and-roll method of temporary pothole patching, which is mostly accomplished manually, is to fill packing material into the depression on pavement. However, to determine the required filling volume to patch every individual pothole depends on the workers’ experience. The inappropriate patching may cause potential danger to the traffic. For the purpose of avoiding inappropriate pothole patching, the research team proposed a method to measure the volume of a pothole. The method applies photometric stereo technique by using only a camera and couples of spotlights to achieve the purpose. Comparing to other non-contact 3D scanning technology using lasers or x-ray equipment, the method only requires a readily available equipment, and is relatively low-cost. By processing a set of a pothole’s top view images taken with exact same viewing angle but different illumination angles, photometric stereo technique can be used to generate the 3D model of the pothole. After model reconstruction, the volume of the pothole is accessible. Result showed that models of potholes can be rebuilt by proposed method; however, it needs further improvement in its accuracy of volume measurement. Still, the team consider that based on the known volume of a pothole, the patching process can be more accurate and simpler. Furthermore, the method may enhance the possibility of developing an autonomous inspection and repair system as well as a cost estimation method for pothole patching activities.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 107-112
  • Monograph Title: Computing in Civil Engineering 2017: Sensing, Simulation, and Visualization

Subject/Index Terms

Filing Info

  • Accession Number: 01689753
  • Record Type: Publication
  • ISBN: 9780784480830
  • Files: TRIS, ASCE
  • Created Date: Oct 4 2018 4:27PM