Http://www.pin5i.com/showtopic-22246.htmlDescribe the ideas and algorithms.The full text is divided into two parts, the first part of the recognition of the license plate recognition and common method of identification, the second part of the similar QQ verification code, Gmail verification code of this kind of abnormal authentication code recognition methods and ideas.First, the
1: color image to grayscale, weighted average W = 0.229 × R + 0 587xg + 0114xb (1) Reduce the image to 1/4 of the source Image 2: Median Filter: required or not. Check the result. 3: binarization: high legal threshold 4: edge extraction: a simple first-order differential operation can be used, either horizontally or vertically, or a soble operator with a filtering effect. 5: Rough License Plate Extract
To show you live software users to detailed analysis to share the meaning of the license plate.
Analytical sharing:
MO Show Live license plate is to see the micro-signal of the show, the street show live driving is the show live broadcast of the welfare, large-scale live, otaku welfare ~ on the street to find t
License plate Recognition technology (Vehicle License Plate RECOGNITION,VLPR) is an application of computer video image recognition technology in vehicle license plate recognition.License plat
Specific steps
1, the acquisition of the color license plate image conversion into a grayscale image2, the gray image uses the Gaussian smoothing processing, then carries on the direct filtering to it3, using Sobel operator to detect the edge of the image4, the two value of the image for corrosion, expansion, open operation, closed operation of the morphological combination transformation5, the morphologica
The Web Service license plate recognition is the server Edition license plate OCR recognition software, belongs to the backend recognition, theWeb service license plate recognition software currently supports Windows,Linux and ot
Regular Expression for mobile phone number and license plate number in Android, and regular expression for android
Mobile phone number
The description of the number segment of the mobile phone number is reproduced from: Regular Expression of the domestic mobile phone number | accumulation of snails
The mobile phone name is GSM:It indicates that only China Unicom or China Mobile 2G segments (130, 131, 132
License plate numberTime limit: 3000 ms | Memory limit: 65535 KB Difficulty: 1 Description Yan is very like to study the license plate number, from the license plate number can be seen registration of the morning and evening, acco
OPENCV based on the color of the license plate locationhttp://blog.csdn.net/superdont/article/details/24936341OPENCV based on the color of the license plate location2014-05-03 22:05 4626 People read Comments (3) favorite reports Classification:image Processing (a)OpenCV (in)Copyright NOTICE: This article for Bo Mast
Ext.: Https://github.com/fan-wenjie/EasyPR-JavaOne. Open source solutions.Easypr-javaIntroduction IntroductionEasypr-java is the Java version of LIURUOZE/EASYPR. EASYPR is a Chinese open-source license plate recognition system whose goal is to become a simple, efficient and accurate license plate recognition engine.Sup
Then the previous article, the above completed the Pai Chan positioning, then now the license plate character segmentation, the following program each step has a purpose to mark
%%%4.2 License plate Region thresholding (OSTU)I=imread (' C:\Users\Administrator\Desktop\Des.jpg ');I=rgb2gray (I);Figure (1);Subplot (2,1,1)
Article moved to the Http://lanbing510.info/2014/12/18/License-Plate-Detection-Recognition.html,CSDN on the blog is not in maintenance, thank you.
The recent project needs, the license plate, the first probably done the next research:
The basic methods of detection are:
1 Using edge detection + Contour extractio
First, preface
This paper only demonstrates the training of the positive and negative samples of the license plate region using the SVM functions already defined in the opencv2.4.6, and then uses the well-trained SVM model to predict the test samples.
second, the use of positive and negative samples first, I will be a series of images preprocessing, segmentation and other steps, this part of the content ca
---restore content starts---Nothing recently, the company leaders want us to understand the image processing, so learning the following! Because I am not very good at C + +, I can only try to write code in C #! However, there is little information about EMGU CV on the Internet, and many of them are in English, and they are not detailed. So slowly pondering. Wrote a C # positioning license plate code, but th
}) {5}$/ Port authentication :/^ ([0-9]|[ 1-9]\d{1,3}| [1-5]\d{4}|6[0-5]{2}[0-3][0-5]) $/Format is0-65535Divided into several parts to construct:60000-65535;10000-59999;1000-9999;100-999;10-99;0-9;The regular of each part is:6[0-5]{2}[0-3][0-5];[1-5]\d{4}; [1-9]\d{3}; [1-9]\d{2}; [1-9]\d; [0-9]After finishing is:([0-9]|[ 1-9]\d{1,3}| [1-5]\d{4}|6[0-5]{2}[0-3][0-5])Longitude Check:/^[\-\+]? (0?\d{1,2}|0?\d{1,2}\.\d{1,15}|1[0-7]?\d{1}|1[0-7]?\d{1}\.\d{1,15}|180|180\.0{1,15}) $/Latitude Check:/^[\-
Image Recognition exercise (character verification code, license plate number, ID card number)
Byoy 2012
You are welcome to discuss related issues with me. Contact: 1429013154
Code here (note that this version is not the final version)
Optical character recognition (OCR) is a very useful technology. In terms of verification code recognition, license
Identifying ideas:
1, through the camera to collect pictures
2, to the picture denoising, contrast enhanced processing and other operations
3, the location of the license plate position, collect the license plate information
4, the license
This blog is my undergraduate dissertation. It took me half a year to complete the system, and a lot of time was gained. Thanks for helping my teachers and classmates. Share with you here.This paper first introduces the background and research status of the project, then introduces the scheme selection and design process. The design process includes the license plate Recognition Program, the Guide program d
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