/** The main method. */
public static void main(String[] args)
throws IOException, InterruptedException, Correlate.CorrelateException {
// First parse the command line and test for various
// settings.
if (!commandLine(args)) System.exit(-1);
// Set the tile cache up on JAI
TileCache tc = JAI.createTileCache(tileCacheSize);
JAI jai = JAI.getDefaultInstance();
jai.setTileCache(tc);
/*
* Create an input stream from the specified file name
* to be used with the file decoding operator.
*/
FileSeekableStream stream = null;
try {
stream = new FileSeekableStream(inputImageFilename);
} catch (IOException e) {
e.printStackTrace();
System.exit(0);
}
/* Create an operator to decode the image file. */
RenderedImage inputImage = JAI.create("stream", stream);
ParameterBlock pb = new ParameterBlock();
pb.addSource(inputImage);
pb.add(new Float(10.0));
pb.add(new Float(10.0));
// Perform the color conversion.
RenderedImage processedImage = JAI.create("Scale", pb, null);
JAI.create("filestore", processedImage, outputImageFilename, encoder, null);
}
private BufferedImage cropScaleGrayscale(Rectangle visibleRect, RenderedImage image) {
int minX = image.getMinX();
int minY = image.getMinY();
int width = image.getWidth();
int height = image.getHeight();
Rectangle bounds = new Rectangle(minX, minY, width, height);
visibleRect = bounds.intersection(visibleRect);
if (bounds.contains(visibleRect)) {
ParameterBlock pb = new ParameterBlock();
pb.addSource(image);
pb.add((float) visibleRect.x);
pb.add((float) visibleRect.y);
pb.add((float) visibleRect.width);
pb.add((float) visibleRect.height);
image = JAI.create("Crop", pb, JAIContext.noCacheHint);
}
Dimension previewSize = getSize();
if ((visibleRect.width > previewSize.width) || (visibleRect.height > previewSize.height)) {
float scale =
Math.min(
previewSize.width / (float) visibleRect.width,
previewSize.height / (float) visibleRect.height);
image = ConvolveDescriptor.create(image, Functions.getGaussKernel(.25 / scale), null);
ParameterBlock pb = new ParameterBlock();
pb.addSource(image);
pb.add(scale);
pb.add(scale);
image = JAI.create("Scale", pb, JAIContext.noCacheHint);
}
image = Functions.toColorSpace(image, JAIContext.systemColorSpace, null);
if (image.getSampleModel().getDataType() == DataBuffer.TYPE_USHORT) {
image = Functions.fromUShortToByte(image, null);
}
return Functions.toFastBufferedImage(image);
}