*/
protected static void assertRasterEquals(final RenderedImage expected, final RenderedImage actual) {
final RectIter e = RectIterFactory.create(expected, null);
final RectIter a = RectIterFactory.create(actual, null);
if (!e.finishedLines()) do {
assertFalse(a.finishedLines());
if (!e.finishedPixels()) do {
assertFalse(a.finishedPixels());
if (!e.finishedBands()) do {
assertFalse(a.finishedBands());
final float pe = e.getSampleFloat();