JavaFx | GaussianBlur Class

GaussianBlur is a part of JavaFX. GaussianBlur is an implementation of a blur effect using a Gaussian convolution kernel, with a configurable radius.

Constructors of the class:

1. GaussianBlur(): Creates an new object of GaussianBlur.
2. GaussianBlur(double r): Creates a new Object of GaussianBlur with a specified radius.

Commonly Used Methods:

Method	Explanation
getRadius()	Return the value of the property radius.
getInput()	Return the value of the property input.
setInput(Effect val)	Sets the value of the property input.
setRadius(double val)	Sets the value of the property radius.

Below programs illustrate the use of GaussianBlur class:

1. Java program to import an image and add GaussianBlur effect to it: In this program a FileInputStream is created and an image is taken as input from a file. Image named image is created using the input from the file input stream. From the image, an image view object is created and it is added to the VBox. The VBox is then added to the scene and the scene is added to the stage. A GaussianBlur effect is created with a specified level passed as parameters and the effect is set to the image view using setEffect() function.

   // Java program to import an image
   // and add Gaussian Blur effect to it
   import javafx.application.Application;
   import javafx.scene.Scene;
   import javafx.scene.control.*;
   import javafx.scene.layout.*;
   import javafx.stage.Stage;
   import javafx.scene.image.*;
   import javafx.scene.effect.*;
   import java.io.*;
   import javafx.event.ActionEvent;
   import javafx.event.EventHandler;
   import javafx.scene.Group;
   
   public class gaussian_blur_1 extends Application {
   
       // launch the application
       public void start(Stage stage) throws Exception
       {
   
           // set title for the stage
           stage.setTitle("GussianBlur Example");
   
           // create a input stream
           FileInputStream input = new FileInputStream("D:\\GFG.png");
   
           // create a image
           Image image = new Image(input);
   
           // create a image View
           ImageView imageview = new ImageView(image);
   
           // create a gaussian blur effect
           GaussianBlur gaussian_blur = new GaussianBlur();
   
           // set effect
           imageview.setEffect(gaussian_blur);
   
           // create a VBox
           VBox vbox = new VBox(imageview);
   
           // create a scene
           Scene scene = new Scene(vbox, 200, 200);
   
           // set the scene
           stage.setScene(scene);
   
           stage.show();
       }
   
       // Main Method
       public static void main(String args[])
       {
   
           // launch the application
           launch(args);
       }
   }

   Input Image:

   

   Output:
   

2. Java program to import an image and add GaussianBlur effect to it with a specified radius: In this program a FileInputStream is created and an image is taken as input from a file. Image named image is created using the input from file input stream. From the image, an image view object is created and it is added to the VBox. The VBox is then added to the scene and the scene is added to the stage. A GaussianBlur effect is created with a specified level passed as parameters and the effect is set to the image view using setEffect() function. The radius of the GaussianBlur is specified using the setRadius() function.

   // Java program to import an image and
   // add Gaussian Blur effect to it with
   // a specified radius
   import javafx.application.Application;
   import javafx.scene.Scene;
   import javafx.scene.control.*;
   import javafx.scene.layout.*;
   import javafx.stage.Stage;
   import javafx.scene.image.*;
   import javafx.scene.effect.*;
   import java.io.*;
   import javafx.event.ActionEvent;
   import javafx.event.EventHandler;
   import javafx.scene.Group;
   
   public class gaussian_blur_2 extends Application {
   
       // launch the application
       public void start(Stage stage) throws Exception
       {
   
           // set title for the stage
           stage.setTitle("GaussianBlur Example");
   
           // create a input stream
           FileInputStream input = new FileInputStream("D:\\GFG.png");
   
           // create a image
           Image image = new Image(input);
   
           // create a image View
           ImageView imageview = new ImageView(image);
   
           // create a gaussian blur effect
           GaussianBlur gaussian_blur = new GaussianBlur();
   
           // set radius for gaussian blur
           gaussian_blur.setRadius(20.0f);
   
           // set effect
           imageview.setEffect(gaussian_blur);
   
           // create a VBox
           VBox vbox = new VBox(imageview);
   
           // create a scene
           Scene scene = new Scene(vbox, 200, 200);
   
           // set the scene
           stage.setScene(scene);
   
           stage.show();
       }
   
       // Main Method
       public static void main(String args[])
       {
   
           // launch the application
           launch(args);
       }
   }

   Input Image:

   

   Output:
   

Note: The above programs might not run in an online IDE. Please use an offline compiler.

Reference: https://docs.oracle.com/javase/8/javafx/api/javafx/scene/effect/GaussianBlur.html