Detection And Recognition Of Road Traffic Signs Using Street-based Images

Traffic sign detection and recognition is an important component of intelligent transportation part of the current international research hava too much, but a mature and comprehensive traffic sign recognition system have not yet. In this regard, the country’s relatively is late of the study, research work carried out is relatively small, but with the deepening of research, computer technology and image graphics development of new technologies, there will be more research there.In this paper, the most advanced current measurement system for mobile acquisition of real road image data, as the basis of traffic sign recognition data, the data with multi-scene, multi-temporal, multi-angle, high resolution, data continuity, etc., while the most important point is the collection of real images are essential to achieve the right image to the image being shot requirements, identify the work in the preprocessing of the image reduces the image to correct the workload.Detection and traffic signs in the recognition stage, for traffic signs have two important distinctive features:color and shape, respectively, from the color segmentation and geometry characteristics of the detection of image processing. First, start from the color segmentation, comprehensive comparison of a variety of color space model of the color information extraction, the final choice in the YCbCr color space model of the ban on red flags to color segmentation information, thresholding to obtain good results, then two value of the image will be isolated points and small regions of noise cancellation.Secondly, the paper through the traffic signs comparison of geometric features, using the triangle based on Hough transform and optimize the turning point detection and line detection methods to achieve a combination of geometrical feature extraction of traffic signs work.Finally, the ban on signs in the shape of the internal characteristics and color characteristics of a combination of the ban on signs in the temporary or long vehicle parking ban to prohibit the parking of long, stop into, slow down and give way, stop to wait a few kinds of sign detection and recognition of work carried out, using this approach to obtain better detection and recognition.