public void isMonocromo() {
		monocromo = true;
		int red, green, blue;

		for (int i = 0; i < imagen.getWidth(); i++) {
			for (int j = 0; j < imagen.getHeight(); j++) {

				red = getRedPoint(i, j);
				green = getGreenPoint(i, j);
				blue = getBluePoint(i, j);

				if ((red != green) || (red != blue) || (green != blue)) {
					monocromo = false;
					break;
				}
			}
			if (!monocromo) {
				break;
			}
		}
	}