Java Program to Blur Image using Smoothing

// Java Program to Blur Image using Smoothing

// Importing required packages
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;

// Main class
public class GFG {

    // Main driver method
    public static void main(String[] args)
        throws IOException, InterruptedException
    {

        Color color[];

        // Creating a File class object to
        // read the image in the form of file from directory

        // Directory path is passed as an argument
        File fin = new File("D:/test/Image.jpeg");

        // Now object of BufferedImage class is created to
        // convert file into image form
        BufferedImage input = ImageIO.read(fin);

        // Again creating an object of BufferedImage to
        // create output Image
        BufferedImage output = new BufferedImage(
            input.getWidth(), input.getHeight(),
            BufferedImage.TYPE_INT_RGB);

        // Setting dimensions for the image to be processed
        int i = 0;
        int max = 400, rad = 10;
        int a1 = 0, r1 = 0, g1 = 0, b1 = 0;
        color = new Color[max];

        // Now this core section of code is responsible for
        // blurring of an image

        int x = 1, y = 1, x1, y1, ex = 5, d = 0;

        // Running nested for loops for each pixel
        // and blurring it
        for (x = rad; x < input.getHeight() - rad; x++) {
            for (y = rad; y < input.getWidth() - rad; y++) {
                for (x1 = x - rad; x1 < x + rad; x1++) {
                    for (y1 = y - rad; y1 < y + rad; y1++) {
                        color[i++] = new Color(
                            input.getRGB(y1, x1));
                    }
                }

                // Smoothing colors of image
                i = 0;
                for (d = 0; d < max; d++) {
                    a1 = a1 + color[d].getAlpha();
                }

                a1 = a1 / (max);
                for (d = 0; d < max; d++) {
                    r1 = r1 + color[d].getRed();
                }

                r1 = r1 / (max);
                for (d = 0; d < max; d++) {
                    g1 = g1 + color[d].getGreen();
                }

                g1 = g1 / (max);
                for (d = 0; d < max; d++) {
                    b1 = b1 + color[d].getBlue();
                }

                b1 = b1 / (max);
                int sum1 = (a1 << 24) + (r1 << 16)
                           + (g1 << 8) + b1;
                output.setRGB(y, x, (int)(sum1));
            }
        }

        // Writing the blurred image on the disc where
        // directory is passed as an argument
        ImageIO.write(
            output, "jpeg",
            new File("D:/test/BlurredImage.jpeg"));

        // Message to be displayed in the console when
        // program is successfully executed
        System.out.println("Image blurred successfully !");
    }
}