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Copy pathImgIdenfy.java
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163 lines (145 loc) · 5.35 KB
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package com.sw;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.URL;
import java.util.Map;
/**
* @Author Czy
* @Date 20/02/17
* @detail 验证码识别
*/
public class ImgIdenfy {
private int height = 22;
private int width = 62;
private int rgbThres = 150;
public int[][] binaryImg(BufferedImage img) {
int[][] imgArr = new int[this.height][this.width];
for (int x = 0; x < this.width; ++x) {
for (int y = 0; y < this.height; ++y) {
if (x == 0 || y == 0 || x == this.width - 1 || y == this.height - 1) {
imgArr[y][x] = 1;
continue;
}
int pixel = img.getRGB(x, y);
if (((pixel & 0xff0000) >> 16) < this.rgbThres && ((pixel & 0xff00) >> 8) < this.rgbThres && (pixel & 0xff) < this.rgbThres) {
imgArr[y][x] = 0;
} else {
imgArr[y][x] = 1;
}
}
}
return imgArr;
}
// 去掉干扰线
public void removeByLine(int[][] imgArr) {
for (int y = 1; y < this.height - 1; ++y) {
for (int x = 1; x < this.width - 1; ++x) {
if (imgArr[y][x] == 0) {
int count = imgArr[y][x - 1] + imgArr[y][x + 1] + imgArr[y + 1][x] + imgArr[y - 1][x];
if (count > 2) imgArr[y][x] = 1;
}
}
}
}
// 裁剪
public int[][][] imgCut(int[][] imgArr, int[][] xCut, int[][] yCut, int num) {
int[][][] imgArrArr = new int[num][yCut[0][1] - yCut[0][0]][xCut[0][1] - xCut[0][0]];
for (int i = 0; i < num; ++i) {
for (int j = yCut[i][0]; j < yCut[i][1]; ++j) {
for (int k = xCut[i][0]; k < xCut[i][1]; ++k) {
imgArrArr[i][j-yCut[i][0]][k-xCut[i][0]] = imgArr[j][k];
}
}
}
return imgArrArr;
}
// 转字符串
public String getString(int[][] imgArr){
StringBuilder s = new StringBuilder();
int unitHeight = imgArr.length;
int unitWidth = imgArr[0].length;
for (int y = 0; y < unitHeight; ++y) {
for (int x = 0; x < unitWidth; ++x) {
s.append(imgArr[y][x]);
}
}
return s.toString();
}
// 相同大小直接对比
private int comparedText(String s1,String s2){
int n = s1.length();
int percent = 0;
for(int i = 0; i < n ; ++i) {
if (s1.charAt(i) == s2.charAt(i)) percent++;
}
return percent;
}
/**
* 匹配识别
* @param imgArrArr
* @return
*/
public String matchCode(int [][][] imgArrArr){
StringBuilder s = new StringBuilder();
Map<String,String> charMap = CharMap.getCharMap();
for (int[][] imgArr : imgArrArr){
int maxMatch = 0;
String tempRecord = "";
for(Map.Entry<String,String> m : charMap.entrySet()){
int percent = this.comparedText(this.getString(imgArr),m.getValue());
if(percent > maxMatch){
maxMatch = percent;
tempRecord = m.getKey();
}
}
s.append(tempRecord);
}
return s.toString();
}
// 写入硬盘
public void writeImage(BufferedImage sourceImg) {
File imageFile = new File("v.jpg");
try (FileOutputStream outStream = new FileOutputStream(imageFile)) {
ByteArrayOutputStream out = new ByteArrayOutputStream();
ImageIO.write(sourceImg, "jpg", out);
byte[] data = out.toByteArray();
outStream.write(data);
} catch (Exception e) {
System.out.println(e.toString());
}
}
// 控制台打印
public void showImg(int[][] imgArr) {
int unitHeight = imgArr.length;
int unitWidth = imgArr[0].length;
for (int y = 0; y < unitHeight; ++y) {
for (int x = 0; x < unitWidth; ++x) {
System.out.print(imgArr[y][x]);
}
System.out.println();
}
}
public static void main(String[] args) {
ImgIdenfy imgIdenfy = new ImgIdenfy();
try (InputStream is = new URL("http://xxxxxxxxxxxxxxx/verifycode.servlet").openStream()) {
BufferedImage sourceImg = ImageIO.read(is);
imgIdenfy.writeImage(sourceImg); // 图片写入硬盘
int[][] imgArr = imgIdenfy.binaryImg(sourceImg); // 二值化
imgIdenfy.removeByLine(imgArr); // 去除干扰先 引用传递
int[][][] imgArrArr = imgIdenfy.imgCut(imgArr,
new int[][]{new int[]{4, 13}, new int[]{14, 23}, new int[]{24, 33}, new int[]{34, 43}},
new int[][]{new int[]{4, 16}, new int[]{4, 16}, new int[]{4, 16}, new int[]{4, 16}},
4);
System.out.println(imgIdenfy.matchCode(imgArrArr)); // 识别
// imgIdenfy.showImg(imgArr); //控制台打印图片
// imgIdenfy.showImg(imgArrArr[0]); //控制台打印图片
// System.out.println(imgIdenfy.getString(imgArrArr[0]));
} catch (Exception e) {
e.printStackTrace();
}
}
}