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1、此文档是毕业设计外文翻译成品（ 含英文原文+中文翻译），无需调整复杂的格式！下载之后直接可用，方便快捷！本文价格不贵,也就几十块钱！一辈子也就一次的事！外文标题：Improved Traffic Signal Detection and Classification via Image Processing Algorithms外文作者：Leonardo Bruno, Giuseppe Parla, Clara Celauro文献出处: Procedia - Social and Behavioral Sciences 53 (2018) 811 821 (如觉得年份太老，可改为近2年，毕竟很
2、多毕业生都这样做)英文3815单词，23514字符(字符就是印刷符)，中文5859汉字。（如果字数多了，可自行删减，大多数学校都是要求选取外文的一部分内容进行翻译的。）Improved Traffic Signal Detection and Classification via Image Processing AlgorithmsAbstract: An image analysis technique for automatic traffic sign detection and classification is proposed. It makes it possible, aft
3、er proper training, to detect, recognize and classify vertical road signs from video frames acquired on a moving vehicle equipped with cameras, as well as to identify anomalies with respect to road sign regulations (positioning and visibility). The experimental results show that this technique allow
4、s one to correctly detect and classify almost all vertical signs and, mainly in extra-urban environment, it can be considered as highly reliable, apart from being really versatile and user-friendly for road inventory and road maintenance purposes.Keywords: road signal; automatic detection; tracking
5、and classification; maintenance.1.IntroductionImproving traffic quality and safety cannot be achieved without correctly applying and maintaining road traffic signs, traffic signals and road markings. In fact, when road signs are not present, visible, and adequate with respect to the road and traffic
6、 conditions, meaning they do not comply with the requirements set by the regulations currently in force, late or insufficient perception of them contributes to an increase in the accident rate, as shown by road and traffic accident statistics. As is well known, a road sign correctly fulfills its pur
7、pose (that is, to convey correct information and guidance to drivers) only if well-designed, produced and installed; otherwise, it may also become a danger in itself, since it may lead to uncertainties in drivers behavior which is the main cause of road accidents, even with severe consequences. Road
8、 administrations should constantly monitor the correct positioning and maintenance of road signs. In Italy, as in other countries, it is mandatory by law that road authorities and private companies in charge of managing a road have to maintain it, including road signs, in perfect efficiency. Therefo
9、re, it is useful to develop and perfect tools that allow one to automatically recognize and classify the existing traffic signs along a road, with a low processing time. Moreover, developing this kind of tools is also important in view of improving intelligent driver support systems (IDSSs), advance
10、s in which afford a valid opportunity to aid mobility and road safety 1 2. In order to make a contribution to this, as concerns vertical road traffic signs, the potential afforded by branches of Image Analysis and Computer Vision is extremely interesting, since they deal with aspects related to both
11、 extraction of useful content from bi-dimensional images, as obtained by video frames taken from cameras mounted on instrumented vehicles. Ample bibliographic research allowed us to evaluate the most suitable techniques for analyzing video images in order to detect traffic signs from a road scene im
12、age. 2.Road traffic sign categoriesRoad traffic signs can be classified into several categories, since they convey information based on their visual features: color and shape, above all. The choice of adequate colors is based on human perception for perceiving colors in different weather conditions
13、(sunny, foggy, rainy and snowy conditions may occur, depending on the season), so that an adequate chromatic contrast between the sign and the surrounding environment is obtained, in every possible weather or lighting condition.In Italy, three main categories of traffic signs are defined by law, acc
14、ording to their meaning: warning, prescription and direction, as depicted in Figure 1:Fig. 1. Italian road signs (a) danger; (b) regulatory; (c) directionwarning signs: they pre-advise people of a specific type of potential danger and warn drivers to adopt prudential behavior. They are usually trian
15、gular in shape (upward equilateral triangle);regulatory signs: they make a prescription known with which the road users must comply. They are subdivided into give-way signs; prohibition signs and obligation signs;signs that provide information about the location of either the driver or possible dest
16、inations.Warning and prescription signs must be located along the right side of the road. A positioning distance is defined for placing warning and regulatory signs in order to allow drivers to make their behavior comply with what is indicated. These distances in Italy are set as in Table 1, based on the type of road.Table 1. Positioning distances for different signals as a function of the type of roadThe reason for misrecognizing
