Source Code : Demonstrating the Drawing of an Image with a Convolve Operation

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Demonstrating the Drawing of an Image with a Convolve Operation

       
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.awt.image.ConvolveOp;
import java.awt.image.Kernel;

import javax.swing.ImageIcon;
import javax.swing.JFrame;

public class ConvolveIt extends JFrame {
  Image image = getImage("java2s.jpg");

  private static final float[] SHARP = { 0.0f, -1.0f, 0.0f, -1.0f, 5.0f,
      -1.0f, 0.0f, -1.0f, 0.0f };

  BufferedImage bufferedImage;

  ConvolveOp convolveOp;

  public Image getImage(String imageFile) {
    ImageIcon icon = new ImageIcon(imageFile);
    return icon.getImage();
  }

  public ConvolveIt() {
    int width = image.getWidth(this);
    int height = image.getHeight(this);
    bufferedImage = new BufferedImage(width, height,
        BufferedImage.TYPE_INT_RGB);
    Graphics2D big = bufferedImage.createGraphics();
    AffineTransform affineTransform = new AffineTransform();
    big.drawImage(image, affineTransform, this);
    Kernel kernel = new Kernel(3, 3, SHARP);
    convolveOp = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);
  }

  public void paint(Graphics g) {
    Graphics2D g2d = (Graphics2D) g;
    if (bufferedImage != null) {
      g2d.drawImage(bufferedImage, convolveOp, 10, 30);
    }
  }

  public static void main(String args[]) {
    Frame f = new ConvolveIt();
    f.setTitle("ConvolveIt");
    f.setSize(300, 250);
    f.show();
  }
}


           
         
    
    
    
    
    
    
  

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