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Shadow-based vehicle detection in urban traffic

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Ibarra-Arenado, Manuel, Tjahjadi, Tardi, Pérez-Oria, Juan, Robla-Gómez, Sandra and Jiménez-Avello, Agustín (2017) Shadow-based vehicle detection in urban traffic. Sensors, 17 (5). 975. doi:10.3390/s17050975

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Official URL: http://dx.doi.org/10.3390/s17050975

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Abstract

Vehicle detection is a fundamental task in Forward Collision Avoiding Systems (FACS). Generally, vision-based vehicle detection methods consist of two stages: hypotheses generation and hypotheses verification. In this paper, we focus on the former, presenting a feature-based method for on-road vehicle detection in urban traffic. Hypotheses for vehicle candidates are generated according to the shadow under the vehicles by comparing pixel properties across the vertical intensity gradients caused by shadows on the road, and followed by intensity thresholding and morphological discrimination. Unlike methods that identify the shadow under a vehicle as a road region with intensity smaller than a coarse lower bound of the intensity for road, the thresholding strategy we propose determines a coarse upper bound of the intensity for shadow which reduces false positives rates. The experimental results are promising in terms of detection performance and robustness in day time under different weather conditions and cluttered scenarios to enable validation for the first stage of a complete FACS. View Full-Text

Item Type: Journal Article
Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Motor vehicles -- Collision avoidance systems, Traffic accidents -- Prevention, City traffic, Image processing, Shades and shadows
Journal or Publication Title: Sensors
Publisher: MDPI AG
ISSN: 1424-8220
Official Date: 27 April 2017
Dates:
DateEvent
27 April 2017Published
22 April 2017Accepted
Volume: 17
Number: 5
Article Number: 975
DOI: 10.3390/s17050975
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Funder: Spain. Ministerio de Economía y Competitividad [Ministry of Economy and Competitiveness] (MINECO)
Grant number: DPI2012-36959 (MINECO)

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