Study On The Subjective Evaluation Of Traffic Markings Based On Video-Processing Technique

When the way of reducing traffic accident's research which including strengthening the road designs, the reconstruction, management of the road monitoring and enhancing the research of people's transportation consciousness is being received the government's attention more and more the research about traffic signs and the markings is enhancing researchers'awareness. The traffic signs and the markings research not only can make up the insufficiency of traffic safety management of road monitoring, but also can reduces the reconstruction cost, and enhances the transportation participant's consciousness to obey the law greatly.This dissertation introduces the definition, the classification and influencing factors of road traffic markings (especially slowdown markings) at first. Then the dissertation states driver's visual traits under the influence of virtual slowdown markings. On the basis of that, the dissertation studies a simulation test of virtual road markings in real conditions and proposes effective ways to test visual effects of road slowdown markings.Firstly, based on the principle of cameral image formation and visual traits of human eyes, a couple of things are worth stressing when recording. By choosing cameral lens similar to our visual traits, road situation videos are recorded and collected. Secondly, this dissertation discusses the process of collecting video by using software such as Ulead Video Studio 9.0,3ds max,Premiere Pro, producing slowdown markings in real conditions and mixing virtual markings with videos in real conditions. By using video processing technology, the dissertation analyzes subjective recognition of road markings and proposes a research platform for visual assessment. In addition, four slowdown road markings, including parallel, Fishbone-shaped, Quadrangle and 3D markings, are designed. Based on traffic safety psychology and traffic safety engineering, a questionnaire of their subjective recognition is made out. Lastly, on the basis of the questionnaire, drivers will have speed illusions or anxiety towards the four slowdown markings at varying degree and respond with a spontaneous slowdown or brake, so the goal of slowdown is achieved.Through the simulation test of virtual road markings in a real condition, the study can not only be a solution to the problems of unreal road conditions of indoor static tests, but also to the poor flexibility and heavy workload under real road conditions. Therefore, this is a scientific way of assessment, making the establishment of traffic markings more effective and these markings fully display the management function and service function.