How to Clone a Bufferedimage

How do you clone a BufferedImage

Something like this?

static BufferedImage deepCopy(BufferedImage bi) {
 ColorModel cm = bi.getColorModel();
 boolean isAlphaPremultiplied = cm.isAlphaPremultiplied();
 WritableRaster raster = bi.copyData(null);
 return new BufferedImage(cm, raster, isAlphaPremultiplied, null);
}

How to copy an Image/BufferedImage

Take a look at the top answer of this question and see if it fits your situation:

How do you clone a BufferedImage

How to copy bufferedImage

Of course! You have to go and paint the image at the outskirts. Please use this

g.drawImage(this.createdImage, 0, 0, this.createdImage.getWidth(),this.createdImage.getHeight(),null);

How do you clone a BufferedImage

Something like this?

static BufferedImage deepCopy(BufferedImage bi) {
 ColorModel cm = bi.getColorModel();
 boolean isAlphaPremultiplied = cm.isAlphaPremultiplied();
 WritableRaster raster = bi.copyData(null);
 return new BufferedImage(cm, raster, isAlphaPremultiplied, null);
}

How to clone Image?

You can draw to a buffered image, so make a blank bufferedImage, create a graphics context from it, and draw your original image to it.

BufferedImage copyOfImage = 
   new BufferedImage(widthOfImage, heightOfImage, BufferedImage.TYPE_INT_RGB);
Graphics g = copyOfImage.createGraphics();
g.drawImage(originalImage, 0, 0, null);

How to copy image data into a subclass of BufferedImage?

This is in error:

public void copyImage(Image image) {
    if (image != null) {
        this.width = image.getWidth(null);
        this.height = image.getWidth(null);

        BufferedImage bi = (BufferedImage) image;
        Graphics g = getGraphics();

        g.drawImage(bi, 0, 0, width, height, null);
    }
}

Your main problems are:

1. You appear to be trying to change the intrinsic width and height of the original image, the this image, and you shouldn't do this, not this way
2. You are assigning the parameter image's width to the this.height field with this.height = image.getWidth(null);

Other issues:

• You're not conserving resources
• You're making a dangerous and unnecessary cast

and it should be

public void copyImage(Image image) {
    if (image != null) {
        // don't change the width/height of your original image
        int width = image.getWidth(null);
        // int height = image.getWidth(null);
        int height = image.getHeight(null); // *** Note change ***

        // BufferedImage bi = (BufferedImage) image;  // *** no need ***
        Graphics g = getGraphics();

        g.drawImage(image, 0, 0, width, height, null);
        g.dispose();  // save resources
    }
}   

Test code using a MCVE showing proof of concept:

import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.URL;

import javax.imageio.ImageIO;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JOptionPane;

public class TestImage {
    public static final String SOMME_PATH = "https://upload.wikimedia.org/"
            + "wikipedia/commons/thumb/f/fa/Cheshire_Regiment_trench_Somme_1916.jpg"
            + "/1024px-Cheshire_Regiment_trench_Somme_1916.jpg";
    public static final String BATTLE_PATH = "https://upload.wikimedia.org/wikipedia/"
            + "commons/1/13/K%C3%A4mpfe_auf_dem_Doberdo.JPG";

    public static void main(String[] args) {
        int imgW = 1000;
        int imgH = 700;
        MyImage myImage = new MyImage(imgW, imgH, BufferedImage.TYPE_INT_ARGB);
        BufferedImage sommeTrench = null;
        BufferedImage battleOfDoberdò = null;

        try {
            URL url = new URL(SOMME_PATH);
            sommeTrench = ImageIO.read(url);

            url = new URL(BATTLE_PATH);
            battleOfDoberdò = ImageIO.read(url);
        } catch (IOException e) {
            e.printStackTrace();
            System.exit(-1);
        }

        Icon icon = new ImageIcon(myImage);
        JOptionPane.showMessageDialog(null, icon, "Original MyImage", JOptionPane.PLAIN_MESSAGE);

        myImage.copyImage(sommeTrench);
        icon = new ImageIcon(myImage);
        JOptionPane.showMessageDialog(null, icon, "MyImage with Somme Trench", JOptionPane.PLAIN_MESSAGE);

        myImage.copyImage(battleOfDoberdò);        
        icon = new ImageIcon(myImage);
        JOptionPane.showMessageDialog(null, icon, "MyImage with Battle Of Doberdò", JOptionPane.PLAIN_MESSAGE);

    }
}

class MyImage extends BufferedImage {

    public MyImage(int width, int height, int imageType) {
        super(width, height, imageType);
    }

    public void copyImage(Image image) {
        if (image != null) {
            int width = image.getWidth(null);

            int height = image.getHeight(null); // *** Note change ***

            Graphics g = getGraphics();

            g.drawImage(image, 0, 0, width, height, null);
            g.dispose(); // save resources
        }
    }    
}

If you run this code you will see 3 images displaying as ImageIcons within 3 JOptionPanes, the first the original blank MyImage object, and then after 2 images from World War I have been copied into the original image.

Java BufferedImage: How do i copy an image properly n times by accessing the pixel - array?

The code you have uses scanline=8 as last parameter to setRGB and also wrong logic in copyNTimes which causes your stripped effect. If you want 8x8 pixel image repeating into 64x64 pixel image as 8x8 blocks either replace your setRGB call with this to repeat the small image into the larger one:

for (int x = 0 ; x < 64 ; x += 8)
    for (int y = 0 ; y < 64 ; y += 8)
        copiedNTimes.setRGB(x, y, 8, 8, smallPixels, 0, 8);

Or replace your setRGB call with this to build the larger int[] first and apply it in one step:

copiedNTimes.setRGB(0, 0, 64, 64, copied, 0, 64);

static int[] copyNTimes(int[] small, int[] big){
    for(int x = 0 ; x < big.length; x++){
        big[x] = small[8 * ((x / 64) % 8) + (x % 8)];
    }
    return big;
}

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