Determination of vehicle density from traffic images at day and nighttime

Mehrübe Mehrübeoğlu; Lifford McLauchlan

doi:10.1117/12.700982

26 February 2007 Determination of vehicle density from traffic images at day and nighttime

Mehrübe Mehrübeoğlu, Lifford McLauchlan

Author Affiliations +

Proceedings Volume 6496, Real-Time Image Processing 2007; 649603 (2007) https://doi.org/10.1117/12.700982
Event: Electronic Imaging 2007, 2007, San Jose, CA, United States

Abstract

In this paper we extend our previous work to address vehicle differentiation in traffic density computations¹. The main goal of this work is to create vehicle density history for given roads under different weather or light conditions and at different times of the day. Vehicle differentiation is important to account for connected or otherwise long vehicles, such as trucks or tankers, which lead to over-counting with the original algorithm. Average vehicle size in pixels, given the magnification within the field of view for a particular camera, is used to separate regular cars and long vehicles. A separate algorithm and procedure have been developed to determine traffic density after dark when the vehicle headlights are turned on. Nighttime vehicle recognition utilizes blob analysis based on head/taillight images. The high intensity of vehicle lights are identified in binary images for nighttime vehicle detection. The stationary traffic image frames are downloaded from the internet as they are updated. The procedures are implemented in MATLAB. The results of both nighttime traffic density and daytime long vehicle identification algorithms are described in this paper. The determination of nighttime traffic density, and identification of long vehicles at daytime are improvements over the original work¹.

Citation Download Citation

Mehrübe Mehrübeoğlu and Lifford McLauchlan "Determination of vehicle density from traffic images at day and nighttime", Proc. SPIE 6496, Real-Time Image Processing 2007, 649603 (26 February 2007); https://doi.org/10.1117/12.700982

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