Mapaear imagen

/**
     * Split the given image into several smaller equally sized parts. The parts
     * are numbered sequentially from left to right and top to down.
     * 
     * @param img The image to be splited.
     * @param columns Number of columns to split the original image.
     * @param lines Number of lines to split the original image
     * @return An array, containing the splited result.
     * @throws IllegalArgumentException If the image is null or if columns or
     *         lines are equal or less than zero.
     */
    public BufferedImage[] splitImage(BufferedImage img, int columns, int lines)
    {
        if (img == null)
            throw new IllegalArgumentException("You must provide an image to split!");

        if (columns &lt 0 || lines &lt 0)
            throw new IllegalArgumentException("Columns or lines must be greater than zero!");

        if (columns == 1 && lines == 1)
            return new BufferedImage[] {img};

        BufferedImage[] result = new BufferedImage[columns * lines];

        int width = img.getWidth() / columns;
        int height = img.getHeight() / lines;

        int count = 0;
        for (int col = 0; col &lt columns; col++)
            for (int lin = 0; lin &lt lines; lin++)
            {
                BufferedImage copy = BufferedImage copy = new BufferedImage(width, height, 
                     img.getTransparency());
                Graphics2D surface = copy.createGraphics();
                surface.drawImage(img,
                        0,
                        0,
                        width,
                        height,
                        width * col,
                        height * lin,
                        (width * col) + width,
                        (height * lin) + height,
                        null);
                surface.dispose();
                result[count++] = copy;
            }

        return result;
    }