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Thermal Image-Based Deer Detection to Reduce Accidents Due to Deer-Vehicle Collisions

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Thermal Image-Based Deer Detection to Reduce Accidents Due to Deer-Vehicle Collisions

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2013-01

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Intelligent Transportation Systems Institute, Center for Transportation Studies, University of Minnesota

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Report

Abstract

Deer-vehicle collision (DVC) is one of the most serious traffic issues in the Unite States. To reduce DVCs, this research developed a system using a contour-based histogram of oriented gradients algorithm (CNT-HOG) to identify deer through the processing of images taken by thermographic cameras. The system is capable of detecting deer in low visibility. Two motors are applied to enlarge the detection range and make the system capable of tracking deer by providing two degrees of freedom. The main assumption in the CNT-HOG algorithm is that the deer are brighter than their background in a thermo image. The brighter areas are defined as the regions of interest, or ROIs. ROIs were identified based on the contours of brighter areas. HOG features were then collected and certain detection frameworks were applied to the image portions in the ROIs instead of the whole image. In the detection framework, a Linear Support Vector Machine classifier was applied to achieve identification. The system has been tested in various scenarios, such as a zoo and roadways in different weather conditions. The influence of the visible percentage of a deer body and the posture of a deer on detection accuracy has been measured. The results of the applications on roadside have shown that this system can achieve high detection accuracy (up to 100%) with fast computation speed (10 Hz). Achieving such a goal will help to decrease the occurrence of DVCs on roadsides.

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13-06

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Department of Mechanical and Industrial Engineering, Northland Advanced Transportation Systems Research Laboratories, University of Minnesota Duluth

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Zhou, Debao. (2013). Thermal Image-Based Deer Detection to Reduce Accidents Due to Deer-Vehicle Collisions. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/144870.

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