２５５ｘ８８８ - 経済統計練習帳

package pic;
 
import java.io.File;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
import java.awt.*; 
import java.awt.Color;   
 
public class pro {
 
 
 
 
    public static void main(String[] args) {
       pro t=new pro();
    }
 
    pro(){
 
        try {        
        File f = new File("b.jpg");
        BufferedImage bi = ImageIO.read(f); 
 
        int w =bi.getWidth();
        int h =bi.getHeight();
 
        int x,y;
 
        int[][] g1=new int[w][h];  
 
        for(x=0;x<w;x++){
        for(y=0;y<h;y++){
      int rgb = bi.getRGB(x,y);
rgb = 0-rgb;
int b = rgb%256;
int g = (rgb/256)%256;
int r = rgb/256/256;
 
 
 
g1[x][y] = (int)((0.299*r + 0.587*g + 0.114*b));
 
 
 
 
 
 
      }}
 
 
 BufferedImage off = new BufferedImage(w, h, BufferedImage.TYPE_INT_BGR);   
Graphics offsc = off.getGraphics();  
 
 
offsc.setColor(Color.red);
for(x=0;x<w;x++){
for(y=0;y<h;y++){    
offsc.setColor(new Color(255-g1[x][y], 255-g1[x][y], 255-g1[x][y]));
offsc.fillRect(x,y,1,1);
 }} 
 
 String file="e.jpg";
 
offsc.dispose(); 
 
ImageIO.write(off, "jpeg", new File(file));     
 
 
 
 
        } catch (Exception e) {}
 
 
 
 
 
 
 
    }
 
 
 
 
}