Ground-based aerial photography to support traffic flow extraction

Nora Csanyi, Charles K. Toth, Pitu Mirchandani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Road traffic has been steadily increasing worldwide for several decades. With the rising number of vehicles using the transportation network, the effectiveness of traffic management is becoming more crucial, since new road construction does not keep up with the growth of the traffic volume. As a key for effective traffic management, monitoring traffic flow is of growing interest. Recently, new imaging-based systems have been introduced for traffic flow monitoring. These pole- or bridge-mounted cameras show encouraging performance, and the trend of switching toward imaging technologies is expected to increase. Vehicle (feature) extraction from the imagery is a computer vision task. Due to the oblique viewing angles of the pole-mounted cameras, the imagery is significantly distorted, and therefore to support the feature extraction process, it is important to rectify the imagery. This paper proposes a practical approach for rectifying the oblique imagery to the plane of the road surface. The method does not require an available digital elevation model for the rectification, it only requires measured distances from the camera to at least three points on the road surface well distributed in the image area. The paper provides a detailed description of the proposed method and an initial performance analysis.

Original languageEnglish (US)
Title of host publicationAmerican Society for Photogrammetry and Remote Sensing - ASPRS Annual Conference 2007
Subtitle of host publicationIdentifying Geospatial Solutions
Pages165-173
Number of pages9
StatePublished - Dec 1 2007
Externally publishedYes
EventASPRS Annual Conference 2007: Identifying Geospatial Solutions - Tampa, FL, United States
Duration: May 7 2007May 11 2007

Publication series

NameAmerican Society for Photogrammetry and Remote Sensing - ASPRS Annual Conference 2007: Identifying Geospatial Solutions
Volume1

Other

OtherASPRS Annual Conference 2007: Identifying Geospatial Solutions
CountryUnited States
CityTampa, FL
Period5/7/075/11/07

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ASJC Scopus subject areas

  • Information Systems
  • Computers in Earth Sciences

Cite this

Csanyi, N., Toth, C. K., & Mirchandani, P. (2007). Ground-based aerial photography to support traffic flow extraction. In American Society for Photogrammetry and Remote Sensing - ASPRS Annual Conference 2007: Identifying Geospatial Solutions (pp. 165-173). (American Society for Photogrammetry and Remote Sensing - ASPRS Annual Conference 2007: Identifying Geospatial Solutions; Vol. 1).