java--比较两张图片的相似度

import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;

/**
* 比较两张图片的相似度
* @author Guihua
*
*/
public class BMPLoader {
// 改变成二进制码
public static String[][] getPX(String args) {
int[] rgb = new int[3];

File file = new File(args);
BufferedImage bi = null;
try {
bi = ImageIO.read(file);
} catch (Exception e) {
e.printStackTrace();
}

int width = bi.getWidth();
int height = bi.getHeight();
int minx = bi.getMinX();
int miny = bi.getMinY();
String[][] list = new String[width][height];
for (int i = minx; i < width; i++) {
for (int j = miny; j < height; j++) {
int pixel = bi.getRGB(i, j);
rgb[0] = (pixel & 0xff0000) >> 16;
rgb[1] = (pixel & 0xff00) >> 8;
rgb[2] = (pixel & 0xff);
list[i][j] = rgb[0] + "," + rgb[1] + "," + rgb[2];

}
}
return list;

}

public static void compareImage(String imgPath1, String imgPath2){
String[] images = {imgPath1, imgPath2};
if (images.length == 0) {
System.out.println("Usage >java BMPLoader ImageFile.bmp");
System.exit(0);
}

// 分析图片相似度 begin
String[][] list1 = getPX(images[0]);
String[][] list2 = getPX(images[1]);
int xiangsi = 0;
int busi = 0;
int i = 0, j = 0;
for (String[] strings : list1) {
if ((i + 1) == list1.length) {
continue;
}
for (int m=0; m<strings.length; m++) {
try {
String[] value1 = list1[i][j].toString().split(",");
String[] value2 = list2[i][j].toString().split(",");
int k = 0;
for (int n=0; n<value2.length; n++) {
if (Math.abs(Integer.parseInt(value1[k]) - Integer.parseInt(value2[k])) < 5) {
xiangsi++;
} else {
busi++;
}
}
} catch (RuntimeException e) {
continue;
}
j++;
}
i++;
}

list1 = getPX(images[1]);
list2 = getPX(images[0]);
i = 0;
j = 0;
for (String[] strings : list1) {
if ((i + 1) == list1.length) {
continue;
}
for (int m=0; m<strings.length; m++) {
try {
String[] value1 = list1[i][j].toString().split(",");
String[] value2 = list2[i][j].toString().split(",");
int k = 0;
for (int n=0; n<value2.length; n++) {
if (Math.abs(Integer.parseInt(value1[k]) - Integer.parseInt(value2[k])) < 5) {
xiangsi++;
} else {
busi++;
}
}
} catch (RuntimeException e) {
continue;
}
j++;
}
i++;
}
String baifen = "";
try {
baifen = ((Double.parseDouble(xiangsi + "") / Double.parseDouble((busi + xiangsi) + "")) + "");
baifen = baifen.substring(baifen.indexOf(".") + 1, baifen.indexOf(".") + 3);
} catch (Exception e) {
baifen = "0";
}
if (baifen.length() <= 0) {
baifen = "0";
}
if(busi == 0){
baifen="100";
}

System.out.println("相似像素数量：" + xiangsi + " 不相似像素数量：" + busi + " 相似率：" + Integer.parseInt(baifen) + "%");

}

public static void main(String[] args){
BMPLoader.compareImage("E:\\12.bmp", "E:\\1.bmp");
}
}