/**
* Tests the "Multiply" operation.
*
* @throws IOException
*/
@Test
public void testMultiply() throws IOException {
final GridCoverage2D shortCoverage = EXAMPLES.get(5);
final GridCoverage2D floatCoverage = EXAMPLES.get(4);
final GridCoverage2D result = doOp("Multiply", shortCoverage, floatCoverage);
final RenderedImage image = result.getRenderedImage();
final RenderedImage extrema = ExtremaDescriptor.create(image, null, 1, 1, false, 1, null);
double[][] minMax = (double[][]) extrema.getProperty("Extrema");
assertEquals(minMax[0][0], 0.0, DELTA);
assertEquals(minMax[1][0], 6.5272192E7, DELTA);
}
@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);
}
public static float getImageMeanValue(PlanarImage image) {
// Set up the parameter block for the source image and
// the three parameters.
ParameterBlock pb = new ParameterBlock();
pb.addSource(image); // The source image
pb.add(null); // null ROI means whole image
pb.add(1); // check every pixel horizontally
pb.add(1); // check every pixel vertically
// Perform the mean operation on the source image.
RenderedImage meanImage = JAI.create("mean", pb, null);
// Retrieve and report the mean pixel value.
double[] mean = (double[]) meanImage.getProperty("mean");
return (float) mean[0];
}
/** Returns the properties from the source image. */
protected synchronized Hashtable getProperties() {
// Selection of all the image properties
String[] propertyNames = getPropertyNames();
// Selection of the source image
RenderedImage sourceImage = getSourceImage(0);
// Creation of a Map containing all the source image properties
Hashtable<String, Object> properties = new Hashtable<String, Object>();
// Cycle on all the properties
if (propertyNames != null) {
for (String property : propertyNames) {
// Addition of the selected property
properties.put(property, sourceImage.getProperty(property));
}
return properties;
} else {
return null;
}
}
public static java.awt.Image load(
String codecName,
java.io.InputStream inputStream,
edu.cmu.cs.stage3.image.codec.ImageDecodeParam imageDecodeParam)
throws java.io.IOException {
java.io.BufferedInputStream bufferedInputStream;
if (inputStream instanceof java.io.BufferedInputStream) {
bufferedInputStream = (java.io.BufferedInputStream) inputStream;
} else {
bufferedInputStream = new java.io.BufferedInputStream(inputStream);
}
edu.cmu.cs.stage3.image.codec.ImageDecoder imageDecoder =
edu.cmu.cs.stage3.image.codec.ImageCodec.createImageDecoder(
codecName, bufferedInputStream, imageDecodeParam);
java.awt.image.RenderedImage renderedImage = imageDecoder.decodeAsRenderedImage();
if (renderedImage instanceof java.awt.Image) {
return (java.awt.Image) renderedImage;
} else {
java.awt.image.Raster raster = renderedImage.getData();
java.awt.image.ColorModel colorModel = renderedImage.getColorModel();
java.util.Hashtable properties = null;
String[] propertyNames = renderedImage.getPropertyNames();
if (propertyNames != null) {
properties = new java.util.Hashtable();
for (String propertyName : propertyNames) {
properties.put(propertyName, renderedImage.getProperty(propertyName));
}
}
java.awt.image.WritableRaster writableRaster;
if (raster instanceof java.awt.image.WritableRaster) {
writableRaster = (java.awt.image.WritableRaster) raster;
} else {
writableRaster = raster.createCompatibleWritableRaster();
}
java.awt.image.BufferedImage bufferedImage =
new java.awt.image.BufferedImage(
renderedImage.getColorModel(),
writableRaster,
colorModel.isAlphaPremultiplied(),
properties);
return bufferedImage;
}
}
/**
* Converts a rendered image to a {@code BufferedImage}. This utility method has come from a forum
* post by Jim Moore at:
*
* <p><a href="http://www.jguru.com/faq/view.jsp?EID=114602">
* http://www.jguru.com/faq/view.jsp?EID=114602</a>
*
* @param img the rendered image.
* @return A buffered image.
*/
private static BufferedImage convertRenderedImage(RenderedImage img) {
if (img instanceof BufferedImage) {
return (BufferedImage) img;
}
ColorModel cm = img.getColorModel();
int width = img.getWidth();
int height = img.getHeight();
WritableRaster raster = cm.createCompatibleWritableRaster(width, height);
boolean isAlphaPremultiplied = cm.isAlphaPremultiplied();
Hashtable properties = new Hashtable();
String[] keys = img.getPropertyNames();
if (keys != null) {
for (int i = 0; i < keys.length; i++) {
properties.put(keys[i], img.getProperty(keys[i]));
}
}
BufferedImage result = new BufferedImage(cm, raster, isAlphaPremultiplied, properties);
img.copyData(raster);
return result;
}
/** @see Graphics2D#drawRenderedImage(RenderedImage, AffineTransform) */
public void drawRenderedImage(RenderedImage img, AffineTransform xform) {
BufferedImage image = null;
if (img instanceof BufferedImage) {
image = (BufferedImage) img;
} else {
ColorModel cm = img.getColorModel();
int width = img.getWidth();
int height = img.getHeight();
WritableRaster raster = cm.createCompatibleWritableRaster(width, height);
boolean isAlphaPremultiplied = cm.isAlphaPremultiplied();
Hashtable properties = new Hashtable();
String[] keys = img.getPropertyNames();
if (keys != null) {
for (int i = 0; i < keys.length; i++) {
properties.put(keys[i], img.getProperty(keys[i]));
}
}
BufferedImage result = new BufferedImage(cm, raster, isAlphaPremultiplied, properties);
img.copyData(raster);
image = result;
}
drawImage(image, xform, null);
}
/**
* Returns the specified property.
*
* @param name Property name.
* @param opNode Operation node.
*/
public Object getProperty(String name, Object opNode) {
validate(name, opNode);
if (opNode instanceof RenderedOp && name.equalsIgnoreCase("roi")) {
RenderedOp op = (RenderedOp) opNode;
ParameterBlock pb = op.getParameterBlock();
// Retrieve the rendered source image and its ROI.
RenderedImage src = pb.getRenderedSource(0);
Object property = src.getProperty("ROI");
if (property == null
|| property.equals(java.awt.Image.UndefinedProperty)
|| !(property instanceof ROI)) {
return java.awt.Image.UndefinedProperty;
}
// Return undefined also if source ROI is empty.
ROI srcROI = (ROI) property;
if (srcROI.getBounds().isEmpty()) {
return java.awt.Image.UndefinedProperty;
}
// Retrieve the Interpolation object.
Interpolation interp = (Interpolation) pb.getObjectParameter(1);
// Determine the effective source bounds.
Rectangle srcBounds = null;
PlanarImage dst = op.getRendering();
if (dst instanceof GeometricOpImage && ((GeometricOpImage) dst).getBorderExtender() == null) {
srcBounds =
new Rectangle(
src.getMinX() + interp.getLeftPadding(),
src.getMinY() + interp.getTopPadding(),
src.getWidth() - interp.getWidth() + 1,
src.getHeight() - interp.getHeight() + 1);
} else {
srcBounds = new Rectangle(src.getMinX(), src.getMinY(), src.getWidth(), src.getHeight());
}
// If necessary, clip the ROI to the effective source bounds.
if (!srcBounds.contains(srcROI.getBounds())) {
srcROI = srcROI.intersect(new ROIShape(srcBounds));
}
// Retrieve the Warp object.
Warp warp = (Warp) pb.getObjectParameter(0);
// Setting constant image to be warped as a ROI
Rectangle dstBounds = op.getBounds();
// Setting layout of the constant image
ImageLayout2 layout = new ImageLayout2();
int minx = (int) srcBounds.getMinX();
int miny = (int) srcBounds.getMinY();
int w = (int) srcBounds.getWidth();
int h = (int) srcBounds.getHeight();
layout.setMinX(minx);
layout.setMinY(miny);
layout.setWidth(w);
layout.setHeight(h);
RenderingHints hints = op.getRenderingHints();
hints.add(new RenderingHints(JAI.KEY_IMAGE_LAYOUT, layout));
final PlanarImage constantImage =
ConstantDescriptor.create(new Float(w), new Float(h), new Byte[] {(byte) 255}, hints);
PlanarImage roiImage = null;
// Make sure to specify tileCache, tileScheduler, tileRecyclier, by cloning hints.
RenderingHints warpingHints = op.getRenderingHints();
warpingHints.remove(JAI.KEY_IMAGE_LAYOUT);
// Creating warped roi by the same way (Warp, Interpolation, source ROI) we warped the
// input image.
final ParameterBlock paramBlk = new ParameterBlock();
paramBlk.addSource(constantImage);
paramBlk.add(warp);
paramBlk.add(interp);
paramBlk.add(null);
paramBlk.add(srcROI);
// force in the image layout, this way we get exactly the same
// as the affine we're eliminating
Hints localHints = new Hints(op.getRenderingHints());
localHints.remove(JAI.KEY_IMAGE_LAYOUT);
ImageLayout il = new ImageLayout();
il.setMinX(dstBounds.x);
il.setMinY(dstBounds.y);
il.setWidth(dstBounds.width);
il.setHeight(dstBounds.height);
localHints.put(JAI.KEY_IMAGE_LAYOUT, il);
roiImage = JAI.create("Warp", paramBlk, localHints);
ROI dstROI = new ROI(roiImage, 1);
// If necessary, clip the warped ROI to the destination bounds.
if (!dstBounds.contains(dstROI.getBounds())) {
dstROI = dstROI.intersect(new ROIShape(dstBounds));
}
// Return the warped and possibly clipped ROI.
return dstROI;
}
return java.awt.Image.UndefinedProperty;
}
