AUTOMATIC EXTRACTION OF HIGHWAY TRAFFIC DATA FROM AERIAL PHOTOGRAPHS

The design of a system for scanning sequences of aerial photographs with a computer-controlled flying-spot scanner and automatically measuring vehicle locations is described. Hardware and software requirements for an operational system of this type are enumerated. Measurement accuracy is predicted to be comparable to that achieved with manual methods in high-volume applications. The cost of such a system is estimated to exceed $500,000. Efficient operation is shown to be critically dependent on the development of an algorithm for predicting vehicle positions that is significantly better than that now available.

• Corporate Authors:

  Transportation Systems Center

  55 Broadway, Kendall Square
  Cambridge, MA  United States  02142
• Authors:
  • Raudseps, J G
• Publication Date: 1975-4

Media Info

• Pagination: 78 p.

Subject/Index Terms

• TRT Terms: Aerial photography; Algorithms; Computers; Data processing equipment; Film; Highway traffic; Information processing; Microforms; Photogrammetry; Scanners; Software; Traffic flow; Traffic measurement; Vehicle detectors
• Old TRIS Terms: Computer systems hardware; Computer systems software; Film readers; Scanning; Vehicular traffic
• Subject Areas: Design; Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00091485
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: DOT-TSC-FHWA-75-1 Final Rpt.
• Files: NTIS, TRIS
• Created Date: Jul 24 1975 12:00AM