基于Matlab的车牌识别技术的仿真

车牌识别系统包括五个核心部分,分别是图像采集、图像预处理、车牌定位、字符分割、字符识别。此系统的工作过程为:首先对车牌进行预处理,确定车牌水平位置和垂直位置,即车牌的具体位置;接下来经字符分割工作提取车牌字符;最后采用模板匹配的方法完成车牌字符的识别。Matlab仿真实验结果表明,本系统的车牌识别率可达96%。     

车辆牌照自动识别的设计与实现

本文采用VC++开发完成了"车辆牌照自动识别系统".首先简要介绍了该系统的概况,并时系统进行了详细设计开发,系统主要实现的功能为:对采集到的车辆牌照图像进行预处理、车牌定位、字符分割及字符识别.其次,采用实际车辆图像对该系统进行了车辆牌照识别实验,并结合实验结果对此系统识别性能进行了分析.     

车牌拍照识别技术研究动向

车牌识别技术是一项应用范围非常广的技术,在人们的生活中发挥着越来越重要的作用。汽车牌照识别技术是一个以特定目标为对象的专用计算机视觉系统,能从一幅图像中自动提取车牌图像,自动分割字符,进而对字符进行识别。该技术对采集到的汽车图像进行处理,能够实时准确地自动识别出车牌的数字、字母及汉字字符,并以计算机可直接运行的数据形式给出识别结果。     

一种基于边缘信息的车牌字符分割算法

提出了一种新型的基于边缘信息的车牌字符分割方法,首先对采集的彩色车牌进行灰度化,在去除噪声后,对车牌区域利用SUSAN算子进行边缘检测.通过垂直投影分割,确定字符区域的不同宽度,利用字符宽度的分类与区域前后文宽度的变化可降低误分割的概率.实验结果表明,采用该算法对车牌字符进行分割时,可显著提高分割的正确性.     

基于图像处理的钢管字符分割方法研究

钢管字符作为钢管的“身份证”号需清晰记录,但易受氧化、生锈等因素的影响,发生缺损或黏连。为解决受腐蚀字符以及黏连断裂字符的分割问题,设计一种改进的钢管字符分割算法。对原始图像进行二值化等预处理操作,利用黑白像素特点对图像进行修补填充,根据连通域的面积属性去除小噪声,将图像进行分类处理。通过最小二乘法对字符图像进行倾斜矫正,根据连通域边界外接框属性对字符部分进行定位,采用连通域提取法和上下轮廓分析法两种分割算法层层递进的方式完成分割任务。经验证,该方法可以较准确的分割出反光、模糊、断裂和黏连字符图像且明显优于传统方法。     

一种实用的光斑图像分割算法

对激光光斑图像准确分割能准确地提取质心、直径等参数。提出了一种实用的激光光斑分割算法,首先采集光斑及背景图像,然后对光斑图像与背景图像进行差分,最后采用最佳阈值分割。实验结果表明,本算法能够有效、正确地对光斑图像进行分割。     

基于改进的CNN喷码式不规则字符识别与提取方法

乳制品纸包装上的生产批号在喷码过程中由于各种原因部分字符出现粘连或缺失,影响字符的自动化识别。针对这一问题,提出了一种基于改进的CNN喷码式不规则字符识别与提取方法。首先,利用yolov3算法对生产日期区域进行提取;其次,对图像进行预处理;再次,通过一种基于字宽的分割算法结合投影法,利用相邻字符间的像素差异实现对粘连字符的分割;最后,对分割后的单个字符利用改进的CNN进行多标签分类训练得到模型。实验结果表明,改进后的模型对粘连字符和半或残缺字符的识别准确率分别为97.89%和96.71%,相较于模板匹配法、传统的LeNet-5模型、fast R-CNN+NMS模型和yolov3+K-means算法都有所提高。基于该方法设计的字符识别系统,提高了生产日期的在线识别准确率。     

基于MATLAB的车牌识别系统设计与实现

针对复杂的高速交通系统，设计了一套基于MATLAB的车牌识别系统，采用数字图像处理技术，自动识别车牌图像中的牌照信息，让交通系统实现数字化。具体过程是先对采集到的车牌图像进行灰度化，再进行边缘检测、形态学处理等，完成车牌的两次定位，成功后再进行倾斜校正、二值化、反色、字符分割，最后用模版匹配法对车牌字符进行识别。从实验结果看，该系统准确定位车牌并能准确快速地识别出车牌号码，实时性和实用性都较好。     

一种改进的车牌图像识别算法

提出了基于改进的边缘检测和数学形态学结合的车牌图像识别新方法.首先将采集到的彩色车牌图像转化为灰度车牌图像,然后利用Sobel算子进行边缘检测,接着对灰度化的车牌图像进行形态学的腐蚀处理,得到平滑图像的轮廓,再进行X方向的定位和Y方向的定位及区域校正得到车牌的区域.通过对车牌图像的二值化和形态滤波把车牌上的字符给有效分割出来,最后采用模版匹配的方法进行车牌字符的识别.从仿真的结果看:可以准确提取车牌位置的字符,字符识别的准确率较高,且识别的速度快.     

验证码字符图像分割技术研究

验证码字符图像分割质量很大程度上决定机器能否正确识别出验证码。针对验证码字符图像分割策略不同,通过研究投影分割法、连通域分割法、最短路径分割法3种验证码字符图像分割技术,分别探讨其特点和应用范围,给出了Web验证码3种分割技术的综合应用方法。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

The Reader Response Approach to Teaching of English Literature

During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context.