Java Intervals类代码示例

import net.imglib2.util.Intervals; //导入依赖的package包/类
/**
 * Compute the partial derivative of source in a particular dimension.
 *
 * @param source
 *            source image, has to provide valid data in the interval of the
 *            gradient image plus a one pixel border in dimension.
 * @param target
 *            output image, the partial derivative of source in the
 *            specified dimension.
 * @param dimension
 *            along which dimension the partial derivatives are computed
 * @param <T> pixel type source
 * @param <S> pixel type target
 */
public static < T extends RealType< T >, S extends RealType< S > > void gradient(
		final RandomAccessible< T > source,
		final RandomAccessibleInterval< S > target,
		final int dimension )
{
	final Cursor< T > front = Views.flatIterable(
			Views.interval( source,
					Intervals.translate( target, 1, dimension ) ) ).cursor();
	final Cursor< T > back = Views.flatIterable(
			Views.interval( source,
					Intervals.translate( target, -1, dimension ) ) ).cursor();
	for( final S t : Views.flatIterable( target ) )
	{
		t.setReal( front.next().getRealDouble() - back.next().getRealDouble());
		t.mul( 0.5 );
	}
}
 

import net.imglib2.util.Intervals; //导入依赖的package包/类
public BlendedExtendedMirroredRandomAccesible2(RandomAccessibleInterval<T> img, int[] border) {
	this.img = img;
	this.numDimensions = img.numDimensions();
	
	float[] blendingBorder = new float[numDimensions];
	float[] border2 = new float[numDimensions];
	
	this.extDims = new FinalInterval(img);		
	for (int i = 0; i < numDimensions; i++)
	{
		extDims = Intervals.expand(extDims, border[i], i);
		blendingBorder[i] = border[i];
		border2[i] = 0.0f;
	}
	
	this.blending = new BlendingRealRandomAccessible(extDims, border2, blendingBorder);
}
 

import net.imglib2.util.Intervals; //导入依赖的package包/类
/**
 * Load raw data, find maximum raw dimensions
 *
 * @param params
 * @throws IOException
 */
@Override
protected void initRaw( final P params ) throws IOException
{
	System.out.println( "Opening raw from " + params.inFile );
	final IHDF5Reader reader = HDF5Factory.openForReading( params.inFile );

	/* raw pixels */
	Arrays.fill( maxRawDimensions, 0 );
	for ( final String raw : params.raws )
		if ( reader.exists( raw ) )
		{
			final H5UnsignedByteSetupImageLoader rawLoader = new H5UnsignedByteSetupImageLoader( reader, raw, setupId++, cellDimensions, cache );
			raws.add( rawLoader );
			max( maxRawDimensions, Intervals.dimensionsAsLongArray( rawLoader.getVolatileImage( 0, 0 ) ) );
		}
		else
			System.out.println( "no raw dataset '" + raw + "' found" );
}
 

import net.imglib2.util.Intervals; //导入依赖的package包/类
/**
 * Save a {@link RandomAccessibleInterval} of {@link LongType} into an HDF5
 * uint8 dataset.
 *
 * @param source source
 * @param dimensions dimensions of the dataset if created new
 * @param writer
 * @param dataset
 * @param cellDimensions
 */
static public void createUnsignedByte(
		final IHDF5Writer writer,
		final String dataset,
		final Dimensions datasetDimensions,
		final int[] cellDimensions )
{
	final IHDF5ByteWriter uint8Writer = writer.uint8();

	if ( writer.exists( dataset ) )
		writer.delete( dataset );

	uint8Writer.createMDArray(
			dataset,
			reorder( Intervals.dimensionsAsLongArray( datasetDimensions ) ),
			reorder( cellDimensions ),
			HDF5IntStorageFeatures.INT_AUTO_SCALING_DEFLATE );


}
 

import net.imglib2.util.Intervals; //导入依赖的package包/类
/**
 * Save a {@link RandomAccessibleInterval} of {@link LongType} into an HDF5
 * uint64 dataset.
 *
 * @param source source
 * @param dimensions dimensions of the dataset if created new
 * @param writer
 * @param dataset
 * @param cellDimensions
 */
static public void createUnsignedLong(
		final IHDF5Writer writer,
		final String dataset,
		final Dimensions datasetDimensions,
		final int[] cellDimensions )
{
	final IHDF5LongWriter uint64Writer = writer.uint64();

	if ( writer.exists( dataset ) )
		writer.delete( dataset );

	uint64Writer.createMDArray(
			dataset,
			reorder( Intervals.dimensionsAsLongArray( datasetDimensions ) ),
			reorder( cellDimensions ),
			HDF5IntStorageFeatures.INT_AUTO_SCALING_DEFLATE );
}
 

import net.imglib2.util.Intervals; //导入依赖的package包/类
/**
 * Create anHDF5 int64 dataset.
 *
 * @param source source
 * @param dimensions dimensions of the dataset if created new
 * @param writer
 * @param dataset
 * @param cellDimensions
 */
static public void createLong(
		final IHDF5Writer writer,
		final String dataset,
		final Dimensions datasetDimensions,
		final int[] cellDimensions )
{
	final IHDF5LongWriter int64Writer = writer.int64();

	if ( writer.exists( dataset ) )
		writer.delete( dataset );

	int64Writer.createMDArray(
			dataset,
			reorder( Intervals.dimensionsAsLongArray( datasetDimensions ) ),
			reorder( cellDimensions ),
			HDF5IntStorageFeatures.INT_AUTO_SCALING_DEFLATE );
}
 

import net.imglib2.util.Intervals; //导入依赖的package包/类
public void testUnsignedAnyBitImg() {
	try {
		Img<UnsignedByteType> img1 = (Img<UnsignedByteType>) new ImgOpener().openImgs("/home/albert/Desktop/t2/bridge-crop.tif").get(0);
		
		Img<UnsignedVariableBitLengthType> img2 = new UnsignedVariableBitLengthType(10).createSuitableNativeImg(new ArrayImgFactory<UnsignedVariableBitLengthType>(), Intervals.dimensionsAsLongArray(img1));

		Cursor<UnsignedByteType> c1 = img1.cursor();
		Cursor<UnsignedVariableBitLengthType> c2 = img2.cursor();
		
		while (c1.hasNext()) {
			c1.fwd();
			c2.fwd();
			c2.get().set(c1.get().getIntegerLong());
		}
		
		new ImageJ();
		ImgLib.wrap(img2, "copy").show();
		
	} catch (Exception e) {
		e.printStackTrace();
	}
}
 

import net.imglib2.util.Intervals; //导入依赖的package包/类
public static < T extends Type< T > & Comparable< T > > int findLocalMaximaNeighborhood( final RandomAccessibleInterval< T > img )
{
	// final ArrayList< Point > maxima = new ArrayList< Point >();
	int nMaxima = 0;

	final Cursor< T > center = Views.iterable( Views.interval( img, Intervals.expand( img, -1 ) ) ).localizingCursor();
	final LocalNeighborhood< T > neighborhood = new LocalNeighborhood< T >( img, center );
	final LocalNeighborhoodCursor< T > nc = neighborhood.cursor();
	A: while ( center.hasNext() )
	{
		final T t = center.next();
		nc.updateCenter( center );
		while ( nc.hasNext() )
		{
			final T n = nc.next();
			if ( n.compareTo( t ) > 0 )
				continue A;
		}
		// maxima.add( new Point( center ) );
		++nMaxima;
	}

	return nMaxima;
}
 

import net.imglib2.util.Intervals; //导入依赖的package包/类
public static < T extends Type< T > & Comparable< T > > int findLocalMaximaNeighborhood2( final RandomAccessibleInterval< T > img )
{
	// final ArrayList< Point > maxima = new ArrayList< Point >();
	int nMaxima = 0;

	final Cursor< T > center = Views.iterable( Views.interval( img, Intervals.expand( img, -1 ) ) ).localizingCursor();
	final LocalNeighborhood2< T > neighborhood = new LocalNeighborhood2< T >( img, center );
	final LocalNeighborhoodCursor2< T > nc = neighborhood.cursor();
	A: while ( center.hasNext() )
	{
		final T t = center.next();
		neighborhood.updateCenter( center );
		nc.reset();
		while ( nc.hasNext() )
		{
			final T n = nc.next();
			if ( n.compareTo( t ) > 0 )
				continue A;
		}
		// maxima.add( new Point( center ) );
		++nMaxima;
	}
	return nMaxima;
}
 

import net.imglib2.util.Intervals; //导入依赖的package包/类
public static void main( final String[] args ) throws ImgIOException
	{
		final String fn = "/home/tobias/workspace/data/DrosophilaWing.tif";
		final int span = 3;

		final ArrayImgFactory< FloatType > factory = new ArrayImgFactory< FloatType >();
		final FloatType type = new FloatType();
		final Img< FloatType > imgInput = new ImgOpener().openImg( fn, factory, type );
		final Img< FloatType > imgOutput = factory.create( imgInput, type );

		final Interval computationInterval = Intervals.expand( imgInput, -span );
		final RandomAccessibleInterval< FloatType > input = Views.interval( imgInput, computationInterval );
		final RandomAccessibleInterval< FloatType > output = Views.interval( imgOutput, computationInterval );

		minFilter( input, output, new RectangleShape( span, false ) );
//		minFilter( input, output, new HyperSphereShape( span ) );

		ImageJFunctions.show( imgInput, "input" );
		ImageJFunctions.show( imgOutput, "min filtered" );
	}
 

import net.imglib2.util.Intervals; //导入依赖的package包/类
@Override
public RandomAccessibleInterval<T> calculate(final RandomAccessibleInterval<T> input, final Interval interval) {
	boolean oneSizedDims = false;

	if (dropSingleDimensions) {
		for (int d = 0; d < interval.numDimensions(); d++) {
			if (interval.dimension(d) == 1) {
				oneSizedDims = true;
				break;
			}
		}
	}

	if (Intervals.equals(input, interval) && !oneSizedDims)
		return input;
	if (!Intervals.contains(input, interval))
		throw new RuntimeException("Intervals don't match!");
	IntervalView<T> res = Views.offsetInterval(input, interval);
	return oneSizedDims ? Views.dropSingletonDimensions(res) : res;
}
 

import net.imglib2.util.Intervals; //导入依赖的package包/类
/**
 * Computes integral images of a given order and extends them such that
 * {@link IntegralMean} et al work with them.
 *
 * @param input The RAI for which an integral image is computed
 * @param order
 * @return An extended integral image for the input RAI
 */
@SuppressWarnings({ "unchecked", "rawtypes" })
private RandomAccessibleInterval<RealType> getIntegralImage(
	final RandomAccessibleInterval<I> input, final int order)
{
	ExtendedRandomAccessibleInterval<I, RandomAccessibleInterval<I>> extendedInput =
		Views.extend(input, outOfBoundsFactory);
	FinalInterval expandedInterval = Intervals.expand(input, shape.getSpan()-1);
	IntervalView<I> offsetInterval2 = Views.offsetInterval(extendedInput, expandedInterval);
	
	RandomAccessibleInterval<RealType> img = null;
	switch (order) {
		case 1:
			img = (RandomAccessibleInterval) integralImgOp.calculate(offsetInterval2);
			break;
		case 2:
			img = (RandomAccessibleInterval) squareIntegralImgOp.calculate(offsetInterval2);
			break;
	}

	img = addLeadingZeros(img);

	return img;
}
 

import net.imglib2.util.Intervals; //导入依赖的package包/类
/**
 * Add 0s before axis minimum.
 * 
 * @param input Input RAI
 * @return An extended and cropped version of input
 */
private <T extends RealType<T>> RandomAccessibleInterval<T> addLeadingZeros(
	RandomAccessibleInterval<T> input)
{
	final long[] min = Intervals.minAsLongArray(input);
	final long[] max = Intervals.maxAsLongArray(input);

	for (int i = 0; i < max.length; i++) {
		min[i]--;
	}

	final T realZero = Util.getTypeFromInterval(input).copy();
	realZero.setZero();

	final ExtendedRandomAccessibleInterval<T, RandomAccessibleInterval<T>> extendedImg = Views.extendValue(input,
		realZero);
	final IntervalView<T> offsetInterval = Views.interval(extendedImg,
		min, max);
	
	return Views.zeroMin(offsetInterval);
}
 

import net.imglib2.util.Intervals; //导入依赖的package包/类
/**
 * Removes leading 0s from integral image after composite creation.
 *
 * @param input Input RAI (can be a RAI of Composite)
 * @return An extended and cropped version of input
 */
private <T> RandomAccessibleInterval<T> removeLeadingZeros(
	final RandomAccessibleInterval<T> input)
{
	// Remove 0s from integralImg by shifting its interval by +1
	final long[] min = Intervals.minAsLongArray(input);
	final long[] max = Intervals.maxAsLongArray(input);

	for (int d = 0; d < input.numDimensions(); ++d) {
		int correctedSpan = getShape().getSpan() - 1;
		min[d] += (1 + correctedSpan);
		max[d] -= correctedSpan;
	}

	// Define the Interval on the infinite random accessibles
	final FinalInterval interval = new FinalInterval(min, max);

	final RandomAccessibleInterval<T> extendedImg = Views.offsetInterval(Views
		.extendBorder(input), interval);
	return extendedImg;
}
 

import net.imglib2.util.Intervals; //导入依赖的package包/类
@Override
public Void call() throws Exception {

	final FinalInterval interval = new FinalInterval(in.dimension(0), in.dimension(1));
	for (int j = 0; j < in.dimension(1); j++) {
		// sum up the magnitudes of all bins in a neighborhood
		raNeighbor.setPosition(new long[] { i, j });
		final Cursor<FloatType> cursorNeighborHood = raNeighbor.get().cursor();
		while (cursorNeighborHood.hasNext()) {
			cursorNeighborHood.next();
			if (Intervals.contains(interval, cursorNeighborHood)) {
				raAngles.setPosition(cursorNeighborHood);
				raMagnitudes.setPosition(cursorNeighborHood);
				raOut.setPosition(new long[] { i, j,
						(int) (raAngles.get().getRealFloat() / (360 / numOrientations) - 0.5) });
				raOut.get().add(raMagnitudes.get());
			}
		}
	}
	return null;
}