Many state transportation departments examine roadways using special vans equipped with traditional video cameras. However, Kelvin Wang, a researcher at the University of Arkansas, Fayetteville, has built a prototype van that uses digital cameras to record images at a higher definition and produce data that can be stored on disk rather than tape. With the system, image-processing software can sift through the digital footage to find cracks and holes in the roadway and help generate a map noting the cracks' sizes and locations. The data provided are much more precise than what can be gleaned from video. The prototype equipment costs $500,000, but Wang predicts that the system will become more affordable because of continually decreasing computer costs. For municipalities that cannot afford digital equipment, Wang and some of his associates developed a system that can digitize analog video material and combine it with engineering data to create a digital file similar to one generated by a digital record. The state of Arkansas is using this system to enhance its video data.


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  • Accession Number: 00797274
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 28 2000 12:00AM