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Traffic sign segmentation and classification using statistical learning methods
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DOI：10.1016/j.neucom.2014.11.026.png)
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Traffic signs are an essential part of any circulation system, and failure detection by the driver may significantly increase the accident risk. Currently, automatic traffic sign detection systems still have some performance limitations, specially for achromatic signs and variable lighting conditions. In this work, we propose an automatic traffic-sign detection method capable of detecting both chromatic and achromatic signs, while taking into account rotations, scale changes, shifts, partial deformations, and shadows. The proposed system is divided into three stages: (1) segmentation of chromatic and achromatic scene elements using L*a*b* and HSI spaces, where two machine learning techniques (k-Nearest Neighbors and Support Vector Machines) are benchmarked; (2) post-processing in order to discard non-interest regions, to connect fragmented signs, and to separate signs located at the same post; and (3) signshape classification by using Fourier Descriptors, which yield significant advantage in comparison to other contour-based methods, and subsequent shape recognition with machine learning techniques. Experiments with two databases of real-world images captured with different cameras yielded a sign detection rate of about 97% with a false alarm rate between 3% and 4%, depending on the database. Our method can be readily used for maintenance, inventory, or driver support system applications. (C) 2014 Elsevier B.V. All rights reserved.
Keyword:
Driver support system
Traffic sign detection
Chromatic and achromatic segmentations
Fourier Descriptors
Classification
Machine learning techniques
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期刊
IF:
6.5
论文数:
2.5W
被引数:
6.5W
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引用论文
Multi-ROI Association and Tracking With Belief Functions: Application to Traffic Sign Recognition具有信念功能的多ROI关联和跟踪: 在交通标志识别中的应用
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