@Test
public void testTranslatedImageTileGridROINoData() {
// Testing color indexing with Nodata and ROI
BufferedImage image_ = new BufferedImage(256, 256, BufferedImage.TYPE_BYTE_GRAY);
Graphics g = image_.createGraphics();
g.setColor(Color.WHITE);
g.fillRect(236, 236, 20, 20);
g.setColor(new Color(80, 80, 80)); // A dark gray
g.fillRect(216, 216, 20, 20);
g.setColor(new Color(200, 200, 200)); // A light gray
g.fillRect(216, 236, 20, 20);
g.dispose();
TiledImage image =
new TiledImage(
0,
0,
256,
256,
128,
128,
image_.getColorModel().createCompatibleSampleModel(256, 256),
image_.getColorModel());
image.set(image_);
Range range = RangeFactory.create((byte) 255, (byte) 255);
ROIShape roi = new ROIShape(new Rectangle(0, 0, 20, 20));
RenderedImage indexed = quantize(image, roi, range, 1);
assertTrue(indexed.getColorModel() instanceof IndexColorModel);
IndexColorModel icm = (IndexColorModel) indexed.getColorModel();
assertEquals(4, icm.getMapSize()); // Black background, white fill,
// light gray fill, dark gray fill =
// 4 colors
// check image not black
RenderedImage component = forceComponentColorModel(indexed);
final double[][] coeff = new double[1][5];
Arrays.fill(coeff[0], 0, 4, 1.0 / 4);
component = BandCombineDescriptor.create(component, coeff, null, null, destinationNoData, null);
StatsType[] stats = new StatsType[] {StatsType.EXTREMA};
component =
StatisticsDescriptor.create(component, 1, 1, null, null, false, new int[] {0}, stats, null);
Statistics stat = ((Statistics[][]) component.getProperty(Statistics.STATS_PROPERTY))[0][0];
double[] result = (double[]) stat.getResult();
final double minimum = result[0];
final double maximum = result[1];
assertFalse(Math.abs(maximum - minimum) < TOLERANCE);
}
@Test
public void testTranslatedImageTileGrid() {
BufferedImage image_ = new BufferedImage(256, 256, BufferedImage.TYPE_BYTE_GRAY);
Graphics g = image_.createGraphics();
g.setColor(Color.WHITE);
g.fillRect(236, 236, 20, 20);
g.setColor(new Color(80, 80, 80)); // A dark gray
g.fillRect(216, 216, 20, 20);
g.setColor(new Color(200, 200, 200)); // A light gray
g.fillRect(216, 236, 20, 20);
g.dispose();
TiledImage image =
new TiledImage(
0,
0,
256,
256,
128,
128,
image_.getColorModel().createCompatibleSampleModel(256, 256),
image_.getColorModel());
image.set(image_);
CustomPaletteBuilder builder = new CustomPaletteBuilder(image, 256, 1, 1, 1);
RenderedImage indexed = builder.buildPalette().getIndexedImage();
assertTrue(indexed.getColorModel() instanceof IndexColorModel);
IndexColorModel icm = (IndexColorModel) indexed.getColorModel();
assertEquals(
4,
icm
.getMapSize()); // Black background, white fill, light gray fill, dark gray fill = 4
// colors
// check image not black
ImageWorker iw = new ImageWorker(indexed).forceComponentColorModel().intensity();
double[] mins = iw.getMinimums();
double[] maxs = iw.getMaximums();
boolean result = true;
for (int i = 0; i < mins.length; i++) {
result = mins[i] == maxs[i] ? false : result;
}
assertTrue(result);
}
/**
* Creates a SampleOpImage with the given ParameterBlock if the SampleOpImage can handle the
* particular ParameterBlock.
*/
@Override
public RenderedImage create(ParameterBlock paramBlock, RenderingHints renderHints) {
PlanarImage source1 = (PlanarImage) paramBlock.getRenderedSource(0);
if (source1 == null) {
return null;
}
ROIShape shape = (ROIShape) paramBlock.getObjectParameter(0);
if (shape == null) {
return source1;
}
TiledImage image;
if (ImageUtil.isBinary(source1.getSampleModel())) {
image =
new TiledImage(
source1.getMinX(),
source1.getMinY(),
source1.getWidth(),
source1.getHeight(),
source1.getTileGridXOffset(),
source1.getTileGridYOffset(),
LayoutUtil.createBinarySampelModel(),
LayoutUtil.createBinaryIndexColorModel());
} else {
// rgb cannot be null or have less than one value
Byte[] rgb = (Byte[]) paramBlock.getObjectParameter(1);
int nbands = source1.getSampleModel().getNumBands();
if (rgb.length != nbands) {
Byte fillVal = rgb[0];
rgb = new Byte[nbands];
Arrays.fill(rgb, fillVal);
}
image = ImageFiler.getEmptyTiledImage(rgb, source1.getWidth(), source1.getHeight());
}
image.set(source1, shape);
return image;
}
