DOWNSAMPLE AN IMAGE AND GET ITS BIT PATTERNS

import java.awt.AlphaComposite;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;

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

public class Dwnsampletst {

private static final int IMG_WIDTH = 25;   //set height n width of image
private static final int IMG_HEIGHT = 20;

public static void main(String [] args){

try{

BufferedImage originalImage = ImageIO.read(new File("img.jpg"));  //ur source image
int type = originalImage.getType() == 0? BufferedImage.TYPE_INT_ARGB : originalImage.getType();

BufferedImage resizeImageJpg = resizeImage(originalImage, type);
ImageIO.write(resizeImageJpg, "jpg", new File("img1.jpg"));   //downsampled image


   
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      ImageIO.write(resizeImageJpg, "png", baos);

byte[] val = baos.toByteArray();
          BigInteger bi = new BigInteger(val);
    String s =  bi.toString(2);
System.out.println(s);      //get the bit pattern of downsampled  image



}catch(IOException e){
System.out.println(e.getMessage());
}

    }

    private static BufferedImage resizeImage(BufferedImage originalImage, int type){
BufferedImage resizedImage = new BufferedImage(IMG_WIDTH, IMG_HEIGHT, type);
Graphics2D g = resizedImage.createGraphics();
g.drawImage(originalImage, 0, 0, IMG_WIDTH, IMG_HEIGHT, null);
g.dispose();

return resizedImage;
    }

  }