tesseract

针对公司系统现场查验场景中，需要用到拍照识别并查验证件信息的需求。对其中关键的ocr开源软件tesseract技术进行了简单试用记录。 1、新建一个winform测试项目，通过nuget搜索安装tesseract的sdk。 2、去github下载语言包： https://github.com/tesseract-ocr/tessdata ，分各种语言，下载英文（eng.traineddata）以及中文（chi_sim.traineddata）的，下载完成后放到测试项目的\debug\tessdata目录下，注意只能是tessdata目录，名字不能错。 3、代码如下： using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using Tesseract; namespace TestOCR { public partial class Form1 : Form { public

In my project I have to read the numbers from the image(.jpg or .tiff). After googling a lot, I came to know about the open OCR i.e., Tesseract OCR. Am begginer for Tesseract OCR, I read all the documentation of tesseract & how to use it in Visual studio. Bascically am facing some problem in using tesseract... I followed the steps like this: 1) Downloaded & Installed tesseract-ocr-setup-3.02.02.exe from http://code.google.com/p/tesseract-ocr/downloads/detail?name=tesseract-ocr-setup-3.02.02.exe 2)Open up Microsoft Visual Studio 2008 and go to Tools -> Options Project solutions -> VC++

Is it possible to get font size from an image using pyocr or Tesseract ? Below is my code. tools = pyocr.get_available_tools() tool = tools[0] txt = tool.image_to_string( Imagee.open(io.BytesIO(req_image)), lang=lang, builder=pyocr.builders.TextBuilder() ) Here i get text from image using function image_to_string . And now, my question is, if i can get font-size (number) too of my text. Using tesserocr , you can get a ResultIterator after calling Recognize on your image, for which you can call the WordFontAttributes method to get the information you need. Read the method's documentation for

I've just realized that if I perform OCR process only on the regions that contain text, it would be a lot faster. So what I did were detecting the text regions in the image and then perform OCR process on each one of them. This is the result of "detecting text regions" step using OpenCV (I used it to draw the rectangles on the image): The only problem remains is I couldn't arrange the text result in the order that they appear on the original image. In this case, it should be: circle oval triangle square trapezium diamond rhombus parallelogram rectangle pentagon hexagon heptagon octagon nonagon

python Tesseract安装方法 EXE可执行文件地址：http://download.csdn.net/download/whatday/7740469； 下载tesseract-ocr-setup-3.02.02.exe安装包，安装成功后会在相应磁盘下有Tesseract-OCR文件夹 设置path环境变量 还有新建TESSDATA_PREFIX环境变量 D:\Program Files (x86)\Tesseract-OCR加进去就可以了 tesseract --list-langs　　#查看Tesseract-OCR支持语言 如果要识别简体中文 就要下载字库 简体中文字库文件下载地址为:http://download.csdn.net/detail/wanghui2008123/7621567下载完成后解压，然后将该文件剪切到tessdata目录下去就可以了。 运行下 <pre> tesseract C://Users/Administrator/Desktop/1.jpg C://Users/Administrator/Desktop/output –l chi_sim </pre> 然后会生成output.txt文件 打开就可以看到转化的文字 来源： https://www.cnblogs.com/newmiracle/p/11856314.html

Using this tool http://trainyourtesseract.com/ I would like to be able to use new fonts with pytesseract. the tool give me a file called *.traineddata Right now I'm using this simple script : try: import Image except ImportError: from PIL import Image import pytesseract as tes results = tes.image_to_string(Image.open('./test.jpg'),boxes=True) file = open('parsing.text','a') file.write(results) print(results) How to I use my traineddata file so I'm able to read new font with the python script ? thanks ! edit#1 : so I understand that *.traineddata can be used with Tesseract as a command-line

I am getting below error from tesseract for an image of size 5+ MB. Tesseract Open Source OCR Engine v3.01 with Leptonica Page 0 Image too large: (39667, 56133) Error during processing. Is there a limit on file size or is there a parameter to resolve this issue. Appreciate your help.. It's not the file size but rather the image size (dimension) that exceeds Tesseract limits. I have no problems with Tesseract recognizing 16MB image. Try resize or rescale your image and try again. The maximum width and height are 32767. From the source code (file baseapi.cpp): if (tesseract_->ImageWidth() > MAX