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https://nap.nationalacademies.org/catalog/27432/critical-issues-in-transportation-for-2024-and-beyond

Development of Visibility Assessment Method Using Images Recorded by Onboard Camera

Previous technologies for assessing visibility on the road were approximately accurate but could not provide timely and route-specific visibility information. It is required to develop a system to monitor visibility accurately and easily covered by whole highway. The objective of the present study investigate whether the weighted intensity of the power spectrum (WIPS) using still images recorded by on-board camera identify poor visibility road ahead. We measured the visibility by the vehicle-mounted visibility meter and the driving scene simultaneously using an instrumented vehicle. Results of the time series show that the per-second WIPS estimated using the image road ahead to closely follow the changes in visibility measured by the vehicle-mounted visibility meter. In fact, coefficient of determination between value of WIPS and visibility values was not high due to existence or none-existence of objects as backgrounds and difference in visibility assessment area between image and vehicle-mounted visibility meter. However, based on the results of the investigation, it might be reasonable to evaluate visibility as perceived by drivers using images recorded by the on-board camera.

  • Supplemental Notes:
    • This paper was sponsored by TRB committee AH010 Standing Committee on Surface Transportation Weather.
  • Authors:
    • Nagata, Yasuhiro
    • Hagiwara, Toru
    • Kaneda, Yasuhiro
    • Matsuoka, Naoki
    • Tanji, Kazuhiro
  • Conference:
  • Date: 2018

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Photos; References; Tables;
  • Pagination: 16p

Subject/Index Terms

Filing Info

  • Accession Number: 01657889
  • Record Type: Publication
  • Report/Paper Numbers: 18-04136
  • Files: TRIS, TRB, ATRI
  • Created Date: Jan 25 2018 9:33AM