Java实现图像对比类

package com.function;

import java.awt.image.BufferedImage;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.*;
import javax.imageio.ImageIO;

/*
 * 这个是一个照片比对功能实现类
 */
public class Tools_PhotoMatching {
	public int mactching(String contrast_photo ,String test_photo) {
		int contras_rgb[] = new int[3];
		int test_rgb[] = new int[3];
		int k = 0;
		File contrastfile = new File(contrast_photo);  //对比照片路径
		File testfile = new File(test_photo);    //测试照片路径
		BufferedImage contrasphoto = null;
		BufferedImage testphoto = null;
		try {
			contrasphoto = ImageIO.read(contrastfile);
			testphoto = ImageIO.read(testfile);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		int contraswidth = contrasphoto.getWidth();
		int contrasheight = contrasphoto.getHeight();		
		int testwidth = testphoto.getWidth();
		int testheight = testphoto.getHeight();	
		//File file = new File("C:\\Users\\prize\\Desktop\\TOOLS\\DCIM\\Camera\\log.txt");
		//File file1 = new File("C:\\Users\\prize\\Desktop\\TOOLS\\DCIM\\Camera\\log1.txt");
		try {
			//FileWriter fileWriter = new  FileWriter(file);
			//FileWriter fileWriter1 = new  FileWriter(file1);
			//BufferedWriter bufferedWriter  = new BufferedWriter(fileWriter);
			//BufferedWriter bufferedWriter2 = new BufferedWriter(fileWriter1);		
		for (int i = 0; i < testwidth; i++) {
			for (int j = 0; j < testheight; j++) {				
				//StringBuffer astringBuffer1 = new StringBuffer();
				//StringBuffer bstringBuffer1 = new StringBuffer();				
				int pixel1 = contrasphoto.getRGB(i, j);
				int pixle2= testphoto.getRGB(i, j);
				contras_rgb[0] = (pixel1 & 0xff0000) >> 16;  //将值转化成16进制
				contras_rgb[1] = (pixel1 & 0xff00) >> 8;  
				contras_rgb[2] = (pixel1 & 0xff); 			
				//astringBuffer1.append(i+"行"+j+"列   R="+contras_rgb[0]+"G="+contras_rgb[1]+"B="+contras_rgb[2] );
				//bufferedWriter.write(astringBuffer1.toString());
				//bufferedWriter.newLine();							
				test_rgb[0] = (pixle2 & 0xff0000) >> 16;  
				test_rgb[1] = (pixle2 & 0xff00) >> 8;  
				test_rgb[2] = (pixle2 & 0xff);
				//bstringBuffer1.append(i+"行"+j+"列   R="+test_rgb[0]+"G="+test_rgb[1]+"B="+test_rgb[2]);				
				//bufferedWriter2.write(bstringBuffer1.toString());
				//bufferedWriter2.newLine();				
				int Difference_R = Math.abs(contras_rgb[0]-test_rgb[0]);  //相减并且求绝对值
				int Difference_G= Math.abs(contras_rgb[1]-test_rgb[1]);
				int Difference_B= Math.abs(contras_rgb[2]-test_rgb[2]);
				//System.out.println("第"+j+"次："+Math.abs(Difference));				
				final int R = 35; //35
				final int L = 130;
				int Q = Difference_R+Difference_G+Difference_B;
				if (Difference_R > R && Difference_G > R && Q>L) {    //判断每个值的浮动不超过35			
					k++;
				}else if (Difference_G >R && Difference_B>R && Q>L) {
					k++;			
				}else if (Difference_R > R && Difference_B>R && Q>L) {
					k++;
					
				}									
			}
			
		}
		//bufferedWriter.close();
		//bufferedWriter2.close();
		//fileWriter.close();
		//fileWriter1.close();
		
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}		
		return k;		
	}

}
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