Paper Details

TRB 90th Annual Meeting (January 23-27, 2011)

Event Number:	390
Event Title:	Intelligent Transportation Systems Development and Applications
Event Date:	Jan 24 2011 7:30PM- 9:30PM
Event Location:	Marriott, Salon 2
Event Description:
Event Agenda:

Camera Calibration for Roundabout Traffic Scenes (11-2763)

In this paper, we present an approach to estimate camera intrinsic and extrinsic parameters for roundabout traffic scenes. Unlike many previous works on camera calibration for roadway scenes based on the parallel line method, our work addresses camera calibration for roundabout scenes by using a circle. The proposed method can estimate tilt angle, focal length, and camera height by matching the ellipse equation extracted from an image with the perspective-transformed equation of the corresponding real-world circle. The pan angle is not required in our method and only one image is needed for camera calibration. The method is validated with real-world roundabout traffic scenes and the results are comparable to those from the parallel line method in terms of accuracy.

Authors
     Dinh, Hai , University of Minnesota, Duluth
     Tang, Hua , University of Minnesota, Duluth
     Kwon, Eil , University of Minnesota, Duluth