java开发实战1200例（II）----------058模糊_java awt kernel案例-优快云博客

本文介绍了一个使用Java实现的图片模糊效果处理程序。通过定义一个3x3的卷积核，程序能够对导入的图片进行模糊处理。用户界面包括模糊按钮和退出按钮，点击模糊按钮可以实时预览模糊效果。

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package Test;

import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.awt.image.ConvolveOp;
import java.awt.image.Kernel;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class BlurImageFrame extends JFrame {
   private BufferedImage image;
   private BlurImagePanel blurImagePane=null;
   public static void main(String args[]){
       BlurImageFrame frame=new BlurImageFrame();
       frame.setVisible(true);
   }
   public BlurImageFrame(){
       super();
       this.setBounds(100,100,500,400);
       setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       this.setTitle("图片模糊");
       final JPanel panel=new JPanel();
       blurImagePane=new BlurImagePanel();
       this.add(blurImagePane);
       getContentPane().add(panel,BorderLayout.SOUTH);
       final JButton button_blur=new JButton();
       button_blur.addActionListener(new ActionListener(){
           public void actionPerformed(ActionEvent e){
               float[] elements=new float[9];
               for(int i=0;i<9;i++){
                   elements[i]=0.11f;
               }
               convolve(elements);
           }
       });
       button_blur.setText("模糊");
       panel.add(button_blur);

       final JButton button_exit=new JButton();
       button_exit.addActionListener(new ActionListener(){
           public void actionPerformed(ActionEvent e){
               System.exit(0);
           }
       });
       button_exit.setText("退出");
       panel.add(button_exit);

   }
   private void convolve(float[] elements){
       Kernel kernel=new Kernel(3,3,elements);
       ConvolveOp op=new ConvolveOp(kernel);
       if(image==null){
           return;
       }
       image=op.filter(image,null);
       repaint();
   }
   class BlurImagePanel extends JPanel{
       public BlurImagePanel(){
       Image img=null;
       try {
           img=ImageIO.read(new File("src/image/imag.jpg"));
       } catch (IOException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       }
       image=new BufferedImage(img.getWidth(null),img.getHeight(null),BufferedImage.TYPE_INT_RGB);
       image.getGraphics().drawImage(img,0,0,null);
       }
       public void paint(Graphics g){
           g.drawImage(image, 0, 0,null);
       }
   }

}