VIDEO RECORDING SYSTEM FOR INSPECTION OF LARGE STRUCTURES. FINAL TECHNICAL REPORT

A significant change in the last few years is the increase in resolution, and the decrease in required illumination level of video image recordings. These developments are the basis of this research. The results indicate that video recordings are suitable for inspection of portions of structures, particularly those which are inaccessable, in deep shadows or underwater. Using f=16-160mm zoom optics, the recording distance is 5-150 ft and 3-6 ft underwater. System resolution is satisfactory. It is possible to form images in nearly complete darkness (night time). Therefore, structures in deep shadows can be inspected. It is recommended that video-recording augment visual inspections after certain modifications.

• Corporate Authors:

  University of Washington, Seattle

  Department of Civil and Environmental Engineering, P.O. Box 352700
  Seattle, WA  United States  98195-2700

  Washington State Department of Transportation

  Transportation Building, 310 Maple Park Avenue SE, P.O. Box 47300
  Olympia, WA  United States  98504-7300

  Federal Highway Administration

  Engineering Research and Development Bureau, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Veress, S A
  • Kim, Y
  • Shyue, S-W
• Publication Date: 1986-4

Media Info

• Pagination: 88 p.

Subject/Index Terms

• TRT Terms: Bridge substructures; Distance; Inspection; Lighting; Television; Television cameras; Underwater photography; Videotapes
• Uncontrolled Terms: Resolution
• Subject Areas: Bridges and other structures; Design; Highways; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00460223
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: WA-RD-86.1
• Contract Numbers: Y-2870
• Files: TRIS, USDOT, STATEDOT
• Created Date: Dec 31 1986 12:00AM