NDLI: Safety of stereo driver assistance systems

Content Provider	IEEE Xplore Digital Library
Author	Khan, W. Morris, J.
Copyright Year	2012
Description	Author affiliation: Computer Science Department, Tamaki Campus, The University of Auckland, Auckland, New Zealand (Khan, W.; Morris, J.)
Abstract	The discrete nature of disparities observed by stereo systems results in complex behaviour of speeds measured by them and affects the efficacy of a stereo based driver assistance system. We describe a tool for a safety engineer which permits the safety of these systems to be estimated. It is based on a model which considers the true error in measured velocities of objects. Outputs from this tool show that choice of stereo system parameters so as to judiciously place the disparity change boundaries is critical to the effectiveness of such a system because the range of possible trajectories for a (possibly colliding) object reduces significantly when a feature point on that object crosses one of these boundaries. This factor also means that larger objects (e.g. trucks) are slightly better tracked by stereo than smaller ones (e.g. signs and pedestrians). Completely safe stereo based systems are also shown to issue many precautionary (and ultimately unnecessary) warnings if the stereo parameters are not chosen carefully.
Starting Page	469
Ending Page	475
File Size	580428
Page Count	7
File Format	PDF
ISBN	9781467321198
ISSN	19310587
e-ISBN	9781467321181
DOI	10.1109/IVS.2012.6232188
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-03
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vehicles Trajectory Image resolution Accuracy Hazards Cameras
Content Type	Text
Resource Type	Article

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