blur()

public void blur(){
        newImage = new Image(image.getWidth(), image.getHeight(), "blur");
        for(int i = 0; i < image.getWidth(); i++) {
            for(int j = 0; j < image.getHeight(); j++) {
                Pixel p = image.getPixel(i, j);
                Pixel p2 = newImage.getPixel(i, j);
                int value = p.getValue();
                p2.setValue(average(i, j));
            }
            image.pixelsUpdated();
        }
    }