DEVELOPING AN INEXPENSIVE AUTOMATIC VIDEO RECORDING SYSTEM FOR PAVEMENT CRACK ANALYSIS. FINAL REPORT

Huge amounts of data need to be collected to closely monitor a pavement surface to determine preventive and corrective maintenance. A periodic evaluation of the rate of progress of the pavement deterioration helps highway engineers to determine the most efficient way in which to maintain a particular highway pavement. Typically, a multi-camera video system, along with an image processing system, is mounted in a van to record pavement conditions at high speeds. However, the cost of such a system is very high. Also, a high degree of accuracy is sacrificed for road-speed operation. Manual observation of a pavement block, although highly accurate and detailed in coverage, is very slow and labor intensive, yielding non-standard and non-repetitive results. The goal of this project was, therefore, to develop a system that is small, cheap, and portable, combining transducers with video image processing, including location referencing, that can be quickly located over pavement sections to be sampled for crack condition or surface texture. The first phase of the project resulted in the development of a prototype inspection conveyance containing a video still camera, an ultrasonic transducer and a dedicated, computer controlled data acquisition and storage system. The system has the capability to obtain and store highly accurate visual images and cross-slope profile data to merge them spatially into a map. The data collected is brought back to the office where it is retrieved for further processing. The visual images recorded by the still camera have to be transferred to a personal computer and digitized for image manipulations. Image enhancement and processing techniques are then applied to these digitized images to extract features of interest for evaluation of surface distress and determination of crack patterns.

Language

  • English

Media Info

  • Features: Appendices; Figures; Photos; References;
  • Pagination: 148 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00662813
  • Record Type: Publication
  • Report/Paper Numbers: K-TRAN: KSU-92-7
  • Contract Numbers: KSU-92-7 (C176)
  • Files: TRIS, STATEDOT
  • Created Date: Jul 8 1994 12:00AM