java简单图片、验证码识别源码
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); } } ?