Enlarging an image by pixel replication

 

import java.awt.image.BufferedImage;

public class Main {
  public static void main(String[] argv) throws Exception {
  }

  public static BufferedImage enlarge(BufferedImage image, int n) {

    int w = n * image.getWidth();
    int h = n * image.getHeight();

    BufferedImage enlargedImage = new BufferedImage(w, h, image.getType());

    for (int y = 0; y < h; ++y){
      for (int x = 0; x < w; ++x){
        enlargedImage.setRGB(x, y, image.getRGB(x / n, y / n));
      }
    }
    return enlargedImage;
  }
}

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Enlarging an image by pixel replication : Image « Advanced Graphics « Java

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