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How To Recognise Captcha In C# With OCR Testract Engine

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Fuera de línea
on Sun Dec 27, 2015 7:19 am


KßZ ►☻◄ ƒøяυλ⁄(-мємвєя

KßZ ►☻◄ ƒøяυλ⁄(-мємвєя
1. Step Creat A form And Drop Down A pictureBox on Form And Two TextBox One For Captcha Image Url And Another For Captcha Recognise Answer
2. Step Fisrt Of all Add tessnet2_32.dll in Your Refrance Library With Project. 
3. Step Copy All Code  Below Than Paste It on Your Project.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using tessnet2;

namespace Captch_Recogniser
    public partial class Form1 : Form
       public Form1()
      string session = string.Empty;
       Tesseract ocr = new Tesseract();

       private void loadcaptcha() // Add Fuction For Get Captcha Image and Reply In A textBox
                session = string.Empty;
                Random r = new Random();
                for (int i = 0; i < 9; i++)
                    session += "abcdefghijklmnopqrstuvwxyz"[r.Next(10)]; 
                pictureBox1.ImageLocation = "" + session;
                var image = new Bitmap(pictureBox1.Image);
                Tesseract ocr = new Tesseract();
                ocr.SetVariable("tessedit_char_whitelist", "abcdefghijklmnopqrstuvwxyz");// Here tessedit_char_whitelist Use For Recognise Only Alphabates wich is Followed by "...
" After Comma , //
                ocr.Init(@"C:\Users\Admin\Desktop\Captcha_Recognise\tessdata", "eng", false);   //Testract Engine Address wich is save in tessdata Folder Andd tessdata Folder must be add in Your Project Folder Without Rename It //
                var result = ocr.DoOCR(image, Rectangle.Empty);
                string ad = "";
                foreach (Word word in result)
                    ad += word.Text;
                txtcap.Text = ad;// txtcap.Text is Captcha Reply TextBox
            catch { }


Download Link For tessdata Captcha Recognisation Engine :

Download tessnet2_32.dll From Here :

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