Aimed at the complexity of the traffic, this paper presents a triangle traffic sign detection method using Radon transform . the process of detection consists of three parts. Firstly, the background in image is filtered by the color characteristics of triangle traffic sign. Then the target image is transformed from two-dimensional space to Radon projection space. Finally, triangle traffic signs in image are extracted according to characteristics of triangle in Radon projection space. Experimental results show that the proposed method has a good effect on accuracy of detection and also can detect traffic sign area for triangle traffic signs of geometric distortion.
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