JAVA 比较两张图片的相似度的代码

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