基于51单片机的高速公路测速系统和车牌识别分析

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'基于51单片机的高速公路测速系统和车牌识别分析'
基于51单片机的高速公路测速系统和车牌识别分析添加时间:2020-09-20 11:19:19文章来源:文章作者:点击数:17688摘要鉴于髙速公路限速牌不能很好地对司机起到警示作用的作用,本文设计了一套基于MCS-51单片 机,包含光电探测装置和显示装置的电子屏幕。它不仅能方便设置并显示该路段的限制速度,以 完成普通电子限速牌的限速提示功能,同时能将测得的车速实时显示,并自动判断是否超速。另 外它低廉的造价和经计算证明较高的精度大大提高了它的可用性。车辆牌照口动识别系统是近儿年发展起来的妹于图像和字符识别术的智能化交通管理系统,是目 前国内外模式识别应用研究领域的一个热点。木文对系统中区域提収、图像预处理、字符分割和 字符识别等环节涉及的算法、设计做了一个比较详细的论述。本文在图像预处理中重点介绍一种 在图像获収阶段有忖的定位关注的物体,讨论了灰度图像二值化的多种算法,利川它在原始图像 形成的标识区域特性,在约束条件下,按照识别牌儿何特征提出了一种特殊的二值化处理方法。 实验证明该图像识别系统具冇较高的可靠性与稳定性,减小了进一步车牌识别中计算量大的问 题,从而提高了车牌识别的准确性和快速性。讨论了灰度图像二值化的多种算法基于数学形态学 的图像去除噪声的方法;谑翁У耐枷袢コ肷峭ü龑澩枷竦呢、闭操作有选择的去 噪声。可以去除宜径小于字符笔划半径的孤立噪声点;瓜晗傅亟樯芰嘶谧址翁值淖址 识别方法;谧址翁值淖址侗鸱椒ㄊ窃诙允肿址峁菇谐浞址治龅幕∩,对基 元检测,归纳字符形态特征,得到的快速字符识别方法。关键词:光电检测;车速测量;单片机;电子限速牌;车辆牌照;图像处理;基元检测;字符 识别基于51单片机的高速公路测速系统和车牌识别分析AbstractIn view of the highway speed limit unlicensed drivers should not very well serve as a warning to the role, this article has designed a single-chip based on the MCS-51, including the photoelectric detection devices and display devices of the electronic screen. It not only can easi ly set up and display the road speed 1 imi t in order to achieve common electronic speed limit signs prompt function, can be simultcineously measured real-time display of speed and automatically determine whether the speeding? In addition it is low cost and the higher the accuracy of calculations greatly cnhanee its usability. Vehicle License Plate Recognition system is developed in recent years based on the image and character recognition operation of the Intelligent Traffic Hanagement System, the application of pattern recognition at home and abroad are currently a hot area of research. In this paper, the system of regional extraction, image preprocessing, character segmentation and character recognition algorithm, such as aspect involved in the design to do a more detailed exposition. In this paper image pre-processing in the introduction of a focus at image acquisition phase has the purpose of positioning objects of concern, discussed the gray image binarization of a variety of algorithms, use it in the original logo image formation of regional characteristics, in binding conditions, identification card in accordance with the geometric characteristics of a particular binarization approach? Experiments prove that the image recognition system has high reliability and stability, further reduce the vehicle license plate recognition in the calculation of a large quantity of questions, thereby increasing the accuracy of license plate rccognition and speed? Discussed the gray image binarization algorithm of multiple images based on mathematical morphology method to remove noise? Images based on mathematical morphology to remove the image noise is through the open and close operation has chosen to noise? Can remove the character strokes of a diameter less than the radius of the isolated noise points? Also detail the division of character-based form of character recognition methods? Morphological character-based divisi
关 键 词:
基于 51 单片机 高速公路 测速 系统 车牌 识别 分析
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本文标题:基于51单片机的高速公路测速系统和车牌识别分析
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