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;        
    }

}