java简单图片、验证码识别源码_JAVA_编程开发_程序员俱乐部

java简单图片、验证码识别源码
package com.miaocn;
import java.awt.Graphics;  
import java.awt.Image;  
import java.awt.image.BufferedImage;  
import java.io.ByteArrayInputStream;  
import java.io.File;  
import java.io.IOException;
import java.io.InputStream;  
import java.net.MalformedURLException;
import java.net.URL;
 
import javax.imageio.ImageIO;  
import javax.media.jai.JAI;  
import javax.media.jai.RenderedOp;  
 
/** 
* 数字验证码识别器（用于识别xxx系统的图片验证码） 
*  
* 算法如下： 分析验证码图片结构，将其分隔成4个独立的数字图片，把四个独立的数字图片处理成单色位图。  
* 把单色位图转换为0、1数组，然后分别和0-9的字模进行匹配，得到图片上的数字信息。 
*  
* @version 1.0 2009-7-7 
* @author huangyuanmu 
* @since JDK 1.5.0_8 
*/ 
public class NumberVerCodeIdentifier {  
      
    static 
    {  
          System.setProperty("com.sun.media.jai.disableMediaLib", "true");  
    }  
 
//字典
    private static String a0 = "000111100";
    private static String a1 = "001111110";
   
    private static String a2 = "011111110";
    private static String a22 = "011011000";
   
    private static String a3 = "001111100";
    private static String a4 = "000000110";
   
    private static String a5 = "111111111";//前
    private static String a52 = "011111111";//前
    private static String a53 = "001011000";//后
   
    private static String a6 = "000111100000111100";
    private static String a7 = "001100000";
    private static String a8 = "001111100000111100";
    private static String a9 = "001111000";

    public String recognize(BufferedImage image){
  
     String result = "";
    
    
        BufferedImage newim[] = new BufferedImage[4];  
        if(null == image){  
            throw new RuntimeException("iamage为null");  
        }  
        // 将图像分成四块，因为要处理的文件有四个数字。  
        newim[0] = generateSingleColorBitMap(image.getSubimage(7, 5, 8, 11));  
        newim[1] = generateSingleColorBitMap(image.getSubimage(20, 5, 8, 11));  
        newim[2] = generateSingleColorBitMap(image.getSubimage(33, 5, 8, 11));  
        newim[3] = generateSingleColorBitMap(image.getSubimage(46, 5, 8, 11));  
       
       
        for (int k = 0; k < 4; k++) {
            int iw = newim[k].getWidth(null);  
            int ih = newim[k].getHeight(null);  
     
            StringBuffer numstr = new StringBuffer();
            // 因为是二值图像，这里的方法将像素读取出来的同时，转换为0，1的图像数组。  
            for (int i = 0; i < ih; i++) {  
                for (int j = 0; j < iw; j++) { 
                
                 int t = newim[k].getRGB(j, i);
                    if (t == -1)  
                     numstr.append("0");  
                    else 
                     numstr.append("1");;
                
                }  
            }  
            // 得到像匹配的数字串。  
           
           
            String straaa = numstr.toString().substring(0, 9) + numstr.toString().substring(79);
           // System.out.println(numstr.toString());
           
            boolean bye = true;
            if(straaa.equals(a6))
            {
             result = result+6;
             //System.out.println(6);
             bye = false;
            }
            if(straaa.equals(a8))
            {
             result = result+8;
             //System.out.println(8);
             bye = false;
            }
                       
         if(numstr.toString().substring(0,9).equals(a5) || numstr.toString().substring(0,9).equals(a52) || numstr.toString().substring(79).equals(a53)){
          result = result+5;
          //System.out.println(5);
       bye = false;
      }
           
         String aaaaa = numstr.toString().substring(79);
        
            if(bye){
             if(aaaaa.equals(a0)){
              result = result+0;
              //System.out.println(0);
             }
            
             if(aaaaa.equals(a1)){
              result = result+1;//System.out.println(1);
             }
             if(aaaaa.equals(a2) || aaaaa.equals(a22)){
              result = result+2;//System.out.println(2);
             }
             if(aaaaa.equals(a3)){
              result = result+3;//System.out.println(3);
             }
            
             if(aaaaa.equals(a4)){
              result = result+4;// System.out.println(4);
             }           
            
             if(aaaaa.equals(a7)){
              result = result+7;//System.out.println(7);
             }
            
             if(aaaaa.equals(a9)){
              result = result+9;//System.out.println(9);
             }           
            }
         
         
        }  
       // System.out.println(result);
        return result;
       
    }  
 
    /** 
     * 单色位图转换
     * @return 
     */ 
    private static BufferedImage generateSingleColorBitMap(Image colorImage) {  
        BufferedImage image = new BufferedImage(8, 11,  
                BufferedImage.TYPE_BYTE_GRAY);  
        Graphics g = image.getGraphics();  
        g.drawImage(colorImage, 0, 0, null);  
        g.dispose();  
        RenderedOp ro = JAI.create("binarize", image, new Double(100));  
        BufferedImage bi = ro.getAsBufferedImage();  
        return bi;  
    }  
 
    /** 
     * 测试 
     * @author  sunyang
     */ 
    public static void main(String args[]){  
    
     NumberVerCodeIdentifier nvi = new NumberVerCodeIdentifier();
    
     String res="";
  try {
   res = nvi.recognize(ImageIO.read(new File("d:\\111.bmp")));
  
   //res = nvi.recognize(ImageIO.read(new URL("http://******.com/validationCode.jsp")));
  } catch (MalformedURLException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }  
        System.out.println(res);  
    }  
}