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http://dx.doi.org/10.7470/jkst.2015.33.3.284

The Method of Wet Road Surface Condition Detection With Image Processing at Night  

KIM, Youngmin (Korea Institute of Civil Engineering and Building Technology)
BAIK, Namcheol (Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of Korean Society of Transportation / v.33, no.3, 2015 , pp. 284-293 More about this Journal
Abstract
The objective of this paper is to determine the conditions of road surface by utilizing the images collected from closed-circuit television (CCTV) cameras installed on roadside. First, a technique was examined to detect wet surfaces at nighttime. From the literature reviews, it was revealed that image processing using polarization is one of the preferred options. However, it is hard to use the polarization characteristics of road surface images at nighttime because of irregular or no light situations. In this study, we proposes a new discriminant for detecting wet and dry road surfaces using CCTV image data at night. To detect the road surface conditions with night vision, we applied the wavelet packet transform for analyzing road surface textures. Additionally, to apply the luminance feature of night CCTV images, we set the intensity histogram based on HSI(Hue Saturation Intensity) color model. With a set of 200 images taken from the field, we constructed a detection criteria hyperplane with SVM (Support Vector Machine). We conducted field tests to verify the detection ability of the wet road surfaces and obtained reliable results. The outcome of this study is also expected to be used for monitoring road surfaces to improve safety.
Keywords
HSI color model; image recognition; road surface condition at night; SVM; wavelet transform;
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Times Cited By KSCI : 2  (Citation Analysis)
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