ocr | 易学教程

Character recognition

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问题 I am new to matlab and I am trying learn OCR in it. For now I am just trying to get a system working before diving into the theory for constructing my own system. Anyways I am following code snippet from here However whenever I try the code not only my rectangles appear inverted but they also aren't imposed on my original image. I am thinking that the problem might be here [Ilabel num] = bwlabel(Ifill); disp(num); Iprops = regionprops(Ilabel); Ibox = [Iprops.BoundingBox]; Ibox = reshape(Ibox,

Changing a String of Text and Numbers into Just Numbers

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问题 I'm currently using the OCR tools in Sikuli API to find a transaction ID from the following screen: It finds the text and returns the following after a little bit of cleanup: My question is...How would one best replace the letter characters generated from the OCR with proper Numbers? From what I can see, its fairly consistent with how it deciphers the letters. For example, a '0' usually ends up '1J', a '6' turns into a 'b', and a '7' turns into a 'T'. For those that are interested, I'll post

How to use OCR web service in android application. How can we send request and get response?

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问题 How can we use OCR web service in android application I have use this webservice. How can i pass data using soap base web service and get response back. How can i pass request for nested XML tags ? http://www.ocrwebservice.com/services/OCRWebService.asmx?op=OCRWebServiceRecognize Please help.. 回答1: Please check this library for Android: kSoap2. Also, check this similar question, that offers a few other solutions: "How to call web service with Android" Hope it helps! 回答2: Actually i got the

Text Extraction from Notebook

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问题 I am trying to extract handwritten text from images. I use python with opencv functions such us find_contours. It was all going pretty well when I used images like this one: It works fine because I have a plain background. But then I tested it with this image: Because of the notebook's lines in the background, I am not able to extract the text only. Although the text is red, I turn all images to grayscale or sometimes threshold so it all turns black just like the notebook lines. That way the

Strange Error When Using Tesseract in VB.net

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问题 I have the current code: Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim Bitmap As New Bitmap("image.png") Dim ocr As tessnet2.Tesseract = New tessnet2.Tesseract() ocr.SetVariable("tessedit_char_whitelit", "0123456789") ocr.Init("c:\", "fra", False) Dim result As List(Of tessnet2.Word) = ocr.DoOCR(Bitmap, Rectangle.Empty) For Each word As tessnet2.Word In result RichTextBox1.Text &= word.Text & "(" & word.Confidence & ") " Next

libxerces-c.so: undefined reference to many packages

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问题 I am getting the below error while running the steps (in make for seshat) I don't know why this is coming the seshat is written in c++ and I have never installed something in C++ kindly help how should I install this on my system(centos 7). If the question you find very naive then kindly help I know it might be as I am very new to cpp things. I am following this link for installing seshat My make file looks like this: CC=g++ LINK=-lxerces-c -lm FLAGS = -O3 -Wno-unused-result #-I/path/to/boost

OCR识别技术推动AI发展

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如今互联网技术的发展，无论是民生、交通、环保、旅游、机场，还是金融、银行等，都开始利用新兴技术实现跨界融合和价值体验。电子护照读取识别设备，在读护照时，往往有机读码（MRZ）：把可读的光学字符打印到证卡等载体上，识别时用专用的识别器判读。机读码已建立了国际ICAO标准，能快速准确地查验护照等证卡。国际上使用机读码的种类大致有3种，即多用于护照的2行44个字符类型，多用于签证的2行36个字符类型，多用于身份证卡3行30个字符类型。机读码包含持有证卡人的身份信息。《人脸比对系统》采用最新人脸识别深度学习算法，将人脸识别多个核心算法的人脸定位、人脸特征建模、人脸识别比对等进行了专门优化，支持特征值，空间，三维（多姿）多种比对算法，具有获取方式直接隐蔽、人脸特征信息编码数据量小、识别速度快、识别准确率高、拒识率低、甄别简便、安全性高、使用简便等特点，是一款能适应各种复杂环境的人脸识别高技术产品。人脸识别技术流程主要包括四个组成部分：人脸图像采集及检测、人脸图像预处理、人脸图像特征提取以及与证件资料照片匹配与识别，实现了人证合来源： CSDN 作者：赵保良链接： https://blog.csdn.net/weixin_45816494/article/details/103799966

Camera Preview and OCR

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问题 I am new to android development - I'm using Xamarin. I am trying to write an application that initiates the camera preview, and then constantly scans the incoming frames for text (I am using Xamarin.Tesseract from NuGet). In other words, I don't want to make the user take a photo and then do the OCR analysis, instead I want them to just point the video camera at some paper with text on it, i'll continually do the OCR analysis until I detect the specific text I'm searching for) at which point

Localization of numbers within a complex scene image

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问题 First of all, I very much appreciate the help provided by the experts here at SO. The questions posed by many and answered by the experts has been of immense benefit to me. It had helped me with a very crucial problem few months back when I was a student doing my thesis. Right now I am working on a problem to detect (and then recognize) numbers in a complex scene image. You can check out these images here: http://imageshack.us/g/823/dsc1757w.jpg/. These are pictures of marathon runners with

pytesseract don't work with one digit image

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问题 I have code using pytesseract and work perfect, only don't work when the image I try to recognize are 0 to 9. If image only have one digit don't give any result. This a sample of image I'm working https://drive.google.com/folderview?id=0B68PDhV5SW8BdFdWYVRwODBVZk0&usp=sharing And this the code I'm using import pytesseract varnum= pytesseract.image_to_string(Image.open('images/table/img.jpg')) varnum = float(varnum) print varnum Thanks!!!! With this code I'm able to read all numbers import