I am experimenting on OCR (Optical Character Recognition) .
which is Read Data from an image , I searched a lot over the web
Found two solutions
1.) Using Google's Tessnet2
2.) Using MODI (Microsoft_Office_Document_Imaging Library)
MODI So far i culdn' try as this library comes with MSOfiice 2007 or XP Which I can not get hold of so far.
I tried Google's Tessnet2 and it gave me 98% correct result but only read Alphabets couldn't read digits though.
Below are the Steps which I have used to use this .
1.) Download Tessnet2 binary from the below link
http://www.pixel-technology.com/freeware/tessnet2/
2.) Add reference of Tessnet2 _32.dll (for 32 bit OS) Tessnet2 _64.dll(for 64 bit os)
in Visual Studio Project Solution
3)Download language data definition file(tesseract-2.00.eng.tar.gz) (I did it for English ) from the below link
http://code.google.com/p/tesseract-ocr/downloads/list
4) UnZip the Above folder and Keep all files in Directory 'tessdata'
Place this directory in your App/bin/debug folder
ex. my case I put it here "D:\TanviDoc\OCRApp\OCRApp\bin\Debug\tessdata"
5.) Below is the sample code to do OCR
which is Read Data from an image , I searched a lot over the web
Found two solutions
1.) Using Google's Tessnet2
2.) Using MODI (Microsoft_Office_Document_Imaging Library)
MODI So far i culdn' try as this library comes with MSOfiice 2007 or XP Which I can not get hold of so far.
I tried Google's Tessnet2 and it gave me 98% correct result but only read Alphabets couldn't read digits though.
Below are the Steps which I have used to use this .
1.) Download Tessnet2 binary from the below link
http://www.pixel-technology.com/freeware/tessnet2/
2.) Add reference of Tessnet2 _32.dll (for 32 bit OS) Tessnet2 _64.dll(for 64 bit os)
in Visual Studio Project Solution
3)Download language data definition file(tesseract-2.00.eng.tar.gz) (I did it for English ) from the below link
http://code.google.com/p/tesseract-ocr/downloads/list
4) UnZip the Above folder and Keep all files in Directory 'tessdata'
Place this directory in your App/bin/debug folder
ex. my case I put it here "D:\TanviDoc\OCRApp\OCRApp\bin\Debug\tessdata"
5.) Below is the sample code to do OCR
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Threading;
namespace TesseractConsole
{
class Program
{
static void Main(string[] args)
{
Bitmap bmp = new Bitmap(@"C:\Documents and Settings\lak\Desktop/quotes_7a.jpg");
tessnet2.Tesseract ocr = new tessnet2.Tesseract();
// ocr.SetVariable("tessedit_cha/r_whitelist", "0123456789");
ocr.Init(null, "eng", false);
// List<tessnet2.Word> r1 = ocr.DoOCR(bmp, new Rectangle(792, 247, 130, 54));
List<tessnet2.Word> r1 = ocr.DoOCR(bmp, Rectangle.Empty);
int lc = tessnet2.Tesseract.LineCount(r1);
for (int i = 0; i < lc; i++)
{
List<tessnet2.Word> lineWords = tessnet2.Tesseract.GetLineWords(r1, i);
Console.WriteLine("Line {0} = {1}", i, tessnet2.Tesseract.GetLineText(r1, i));
}
foreach (tessnet2.Word word in r1)
Console.WriteLine("{0}:{1}", word.Confidence, word.Text);
}
}
}
6.) Execute this ,you 'll find Image converted into text.
Above technique did not convert Digits from Image to text , which still I have to figure out.
Microsoft_Office_Document_Imaging Library)And Still have to experiment with MODI( and have to figure out which one is the better one