@Test
public void testCountSubpixel() throws Exception {

	BufferedImage bimage = ImageIO.read(getClass().getResource("ImageUtilsTest_count_subpixel.png"));
	// expectedの値はcount_subpixel.pngで事前に計算したImageUtils.countSubpixelの結果を使用
	double[] expected = { 1.0, 124.01960784313725 };
	double[] actual = ImageUtils.countSubpixel(bimage);
	assertThat(actual, is(expected));
}