public static void scale(File srcImageFile, File destImageFile, float scale) {
		BufferedImage image = null;
		try {
			image = read(srcImageFile);
			scale(image, destImageFile, scale);
		} finally {
			flush(image);
		}
	}
@Test
	@Disabled
	public void scaleByWidthAndHeightTest() {
		ImgUtil.scale(FileUtil.file("f:/test/aaa.jpg"), FileUtil.file("f:/test/aaa_result.jpg"), 100, 400, Color.BLUE);
	}