net.imglib2.img.Img类的使用及代码示例

x33g5p2x  于2022-01-21 转载在 其他  
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本文整理了Java中net.imglib2.img.Img类的一些代码示例，展示了Img类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Img类的具体详情如下：
包路径：net.imglib2.img.Img
类名称：Img

Img介绍

[英]An Img is a RandomAccessibleInterval that has its min at 0n and its max positive. Imgs store pixels and thus are the basis for conventional image processing.
[中]Img是一个可随机访问的区间，其最小值为0n，最大值为正值。IMG存储像素，因此是常规图像处理的基础。

代码示例

代码示例来源：origin: net.imagej/imagej-common

  1. private void copyDataValues(final Img<? extends RealType<?>> input,
  2.   final Img<? extends RealType<?>> output)
  3. {
  4.   final long[] position = new long[output.numDimensions()];
  5.   final Cursor<? extends RealType<?>> outputCursor =
  6.     output.localizingCursor();
  7.   final RandomAccess<? extends RealType<?>> inputAccessor =
  8.     input.randomAccess();
  9.   while (outputCursor.hasNext()) {
  10.     outputCursor.next();
  11.     outputCursor.localize(position);
  12.     inputAccessor.setPosition(position);
  13.     final double value = inputAccessor.get().getRealDouble();
  14.     outputCursor.get().setReal(value);
  15.   }
  16. }

代码示例来源：origin: sc.fiji/Colocalisation_Analysis

  1. protected double getImageMean(Img<T> img) {
  2.    double sum = 0;
  3.    Cursor<T> cursor = img.cursor();
  4.    while (cursor.hasNext()) {
  5.      cursor.fwd();
  6.      T type = cursor.get();
  7.      sum += type.getRealDouble();
  8.    }
  9.    return sum / ImageStatistics.getNumPixels(img);
  10.  }
  11. }

代码示例来源：origin: net.preibisch/multiview-reconstruction

  1. public static FloatProcessor toProcessor( final Img< ? extends RealType< ? > > img )
  2. {
  3.   final FloatProcessor fp = new FloatProcessor( (int)img.dimension( 0 ), (int)img.dimension( 1 ) );
  4.   final float[] array = (float[])fp.getPixels();
  5.   final Cursor< ? extends RealType< ? > > c = img.cursor();
  6.   
  7.   for ( int i = 0; i < array.length; ++ i)
  8.     array[ i ] = c.next().getRealFloat();
  9.   return fp;
  10. }

代码示例来源：origin: net.imglib2/imglib2-algorithms

  1. /** The dimensions of the integral image are always +1 from the integrated image. */
  2. protected static final boolean isIntegerDivision(Img<?> integralImg, Img<?> scaled) {
  3.   for ( int d = 0; d < scaled.numDimensions(); ++d )
  4.     if ( 0 != (integralImg.dimension( d ) -1) % scaled.dimension( d ) )
  5.       return false;
  6.   
  7.   return true;
  8. }

代码示例来源：origin: net.imglib2/imglib2-algorithms

  1. /**
  2.  * Computes a Gaussian convolution with any precision on an entire {@link Img} using the {@link OutOfBoundsMirrorFactory} with single boundary
  3.  * 
  4.  * @param sigma - the sigma for the convolution
  5.  * @param input - the input {@link Img}
  6.  */
  7. public GaussNativeType( final double[] sigma, final Img<T> input, final OutOfBoundsFactory< T, Img<T> > outOfBounds )
  8. {
  9.   this( sigma, Views.extend( input, outOfBounds ), input, input.factory(), input.firstElement().createVariable() );
  10. }

代码示例来源：origin: net.imglib2/imglib2-algorithms-gpl

  1. public static final <T extends RealType<T>> void addGaussianNoiseToImage(Img<T> img, double sigma_noise) {
  2.   Cursor<T> lc = img.localizingCursor();
  3.   double val;
  4.   T var = img.firstElement().createVariable();
  5.   while (lc.hasNext()) {
  6.     lc.fwd();
  7.     val = Math.max(0, sigma_noise * ran.nextGaussian());
  8.     var.setReal(val);
  9.     lc.get().add(var);
  10.   }
  11. }

代码示例来源：origin: imglib/imglib2

  1. void copyWithDestIteration( final Img< IntType > srcImg, final Img< IntType > dstImg )
  2. {
  3.   final long[] pos = new long[ dstImg.numDimensions() ];
  4.   final Cursor< IntType > dst = dstImg.localizingCursor();
  5.   final RandomAccess< IntType > src = srcImg.randomAccess();
  6.   while ( dst.hasNext() )
  7.   {
  8.     dst.fwd();
  9.     dst.localize( pos );
  10.     src.setPosition( pos );
  11.     dst.get().set( src.get() );
  12.   }
  13. }

代码示例来源：origin: net.preibisch/multiview-reconstruction

  1. min = Math.min( min, f.getRealDouble() );
  2. final Img< T > square = img.factory().create( size, img.firstElement() );
  3. final Cursor< T > squareCursor = square.localizingCursor();
  4. final T minT = img.firstElement().createVariable();
  5. minT.setReal( min );
  6. final RandomAccess< T > inputCursor = Views.extendValue( img, minT ).randomAccess();
  7. while ( squareCursor.hasNext() )
  8.   squareCursor.fwd();
  9.   squareCursor.localize( size );
  10.   for ( int d = 0; d < img.numDimensions(); ++d )
  11.     size[ d ] =  size[ d ] - square.dimension( d )/2 + img.dimension( d )/2;
  12.   inputCursor.setPosition( size );
  13.   squareCursor.get().set( inputCursor.get() );

代码示例来源：origin: net.preibisch/multiview-simulation

  1. final long[] tmp = new long[ img.numDimensions() ];
  2. long maxSize = 0;
  3. for ( int d = 0; d < img.numDimensions(); ++d )
  4.   maxSize = Math.max( maxSize, img.dimension( d ) );
  5. for ( int d = 0; d < img.numDimensions(); ++d )
  6.   tmp[ d ] = maxSize;
  7.   min = Math.min( min, f.get() );
  8. final Img< FloatType > square = img.factory().create( tmp, img.firstElement() );
  9. final Cursor< FloatType > squareCursor = square.localizingCursor();
  10. final RandomAccess< FloatType > inputCursor = Views.extendValue( img, new FloatType( min ) ).randomAccess(); 
  11. while ( squareCursor.hasNext() )
  12.   squareCursor.fwd();
  13.   squareCursor.localize( tmp );
  14.   for ( int d = 0; d < img.numDimensions(); ++d )
  15.     tmp[ d ] =  tmp[ d ] - square.dimension( d )/2 + img.dimension( d )/2;
  16.   inputCursor.setPosition( tmp );
  17.   squareCursor.get().set( inputCursor.get().get() );

代码示例来源：origin: net.imglib2/imglib2-algorithm-gpl

  1. final Img< FloatType > img = factory.create( input, new FloatType() );
  2. final IterableInterval< T > iterableInput = Views.iterable( input );
  3. if ( img.iterationOrder().equals( iterableInput.iterationOrder() ) )
  4.   final Cursor< FloatType > out = img.cursor();
  5.   final Cursor< T > in = iterableInput.cursor();
  6.   while ( out.hasNext() )
  7.     out.fwd();
  8.     in.fwd();
  9.     out.get().set( in.get().getRealFloat() );
  10.   final Cursor< FloatType > out = img.localizingCursor();
  11.   final RandomAccess< T > in = input.randomAccess();
  12.     out.fwd();
  13.     in.setPosition( out );
  14.     out.get().set( in.get().getRealFloat() );

代码示例来源：origin: imagej/imagej-ops

  1. @Test
  2. public void testNormalizeScale() {
  3.   ops.run(ConvertIIs.class, out, in,
  4.     ops.op(NormalizeScaleRealTypes.class, out.firstElement(), in.firstElement()));
  5.   final Cursor<ShortType> c = in.localizingCursor();
  6.   final RandomAccess<ByteType> ra = out.randomAccess();
  7.   while (c.hasNext()) {
  8.     final short value = c.next().get();
  9.     ra.setPosition(c);
  10.     assertEquals(normalizeScale(value), ra.get().get());
  11.   }
  12. }

代码示例来源：origin: net.imglib2/imglib2-algorithms-legacy

  1. final int numDimensions = input.numDimensions();
  2. final double[] sigma = new double[ numDimensions ];
  3. downSampled = input.factory().create( newSize, input.firstElement() );
  4. final RealRandomAccessible< T > interpolated = Views.interpolate( Views.extendMirrorSingle( gaussConvolved ), new NearestNeighborInterpolatorFactory<T>() );
  5. final RealRandomAccess< T > interpolator = interpolated.realRandomAccess();
  6. final Cursor<T> cursor = downSampled.localizingCursor();
  7. final float[] scalingDim = scaling.clone();
  8. while ( cursor.hasNext() )
  9.   cursor.fwd();
  10.   cursor.localize( pos );
  11.   cursor.get().set( interpolator.get() );

代码示例来源：origin: net.imglib2/imglib2-script

  1. static private final <T extends RealType<T>> Img<T> processReal(final Img<T> img, final long[] dim, final Mode mode) throws Exception {
  2.   final Img< T > res = img.factory().create( dim );
  3.   final RealRandomAccess<T> inter = ifac.create(Views.extend(img, new OutOfBoundsMirrorFactory<T,Img<T>>(OutOfBoundsMirrorFactory.Boundary.SINGLE)));
  4.   final Cursor<T> c2 = res.localizingCursor();
  5.   final float[] s = new float[dim.length];
  6.   for (int i=0; i<s.length; i++) s[i] = (float)img.dimension(i) / dim[i];
  7.   final long[] d = new long[dim.length];
  8.   final float[] p = new float[dim.length];
  9.   while (c2.hasNext()) {
  10.     c2.fwd();
  11.     c2.localize(d); // TODO "localize" seems to indicate the opposite of what it does
  12.     for (int i=0; i<d.length; i++) p[i] = d[i] * s[i];
  13.     inter.move(p);
  14.     c2.get().set(inter.get());

代码示例来源：origin: imglib/imglib2

  1. int[] getImgAsInts( final Img< IntType > img )
  2. {
  3.   final RandomAccess< IntType > a = img.randomAccess();
  4.   final int N = ( int ) img.size();
  5.   final int[] data = new int[ N ];
  6.   final long[] dim = new long[ img.numDimensions() ];
  7.   final long[] pos = new long[ img.numDimensions() ];
  8.   img.dimensions( dim );
  9.   for ( int i = 0; i < N; ++i )
  10.   {
  11.     IntervalIndexer.indexToPosition( i, dim, pos );
  12.     a.setPosition( pos );
  13.     data[ i ] = a.get().get();
  14.   }
  15.   return data;
  16. }

代码示例来源：origin: sc.fiji/TrackMate_

  1. /**
  2.  * Copy an interval of the specified source image on a float image.
  3.  *
  4.  * @param img
  5.  *            the source image.
  6.  * @param interval
  7.  *            the interval in the source image to copy.
  8.  * @param factory
  9.  *            a factory used to build the float image.
  10.  * @return a new float Img. Careful: even if the specified interval does not
  11.  *         start at (0, 0), the new image will have its first pixel at
  12.  *         coordinates (0, 0).
  13.  */
  14. public static final < T extends RealType< T >> Img< FloatType > copyToFloatImg( final RandomAccessible< T > img, final Interval interval, final ImgFactory< FloatType > factory )
  15. {
  16.   final Img< FloatType > output = factory.create( interval, new FloatType() );
  17.   final long[] min = new long[ interval.numDimensions() ];
  18.   interval.min( min );
  19.   final RandomAccess< T > in = Views.offset( img, min ).randomAccess();
  20.   final Cursor< FloatType > out = output.cursor();
  21.   final RealFloatConverter< T > c = new RealFloatConverter< >();
  22.   while ( out.hasNext() )
  23.   {
  24.     out.fwd();
  25.     in.setPosition( out );
  26.     c.convert( in.get(), out.get() );
  27.   }
  28.   return output;
  29. }

代码示例来源：origin: imagej/imagej-ops

  1. private void copy(ShuffledView<T> shuffled, Img<T> buffer) {
  2.   Cursor<T> cursor = buffer.localizingCursor();
  3.   RandomAccess<T> ra = shuffled.randomAccess();
  4.   while (cursor.hasNext()) {
  5.     T v = cursor.next();
  6.     ra.setPosition(cursor);
  7.     v.set(ra.get());
  8.   }
  9. }

代码示例来源：origin: imagej/imagej-ops

  1. @Test
  2.   public void copyArrayImgWithOutputTest() {
  3.     final Img<UnsignedByteType> output = input.factory().create(input,
  4.         input.firstElement());
  6.     ops.run(CopyArrayImg.class, output, input);
  8.     final Cursor<UnsignedByteType> inc = input.cursor();
  9.     final Cursor<UnsignedByteType> outc = output.cursor();
  11.     while (inc.hasNext()) {
  12.       assertTrue(outc.next().equals(inc.next()));
  13.     }
  14.   }
  15. }

代码示例来源：origin: imagej/imagej-ops

  1. public double DotProduct(final Img<T> image1, final Img<T> image2) {
  2.   final Cursor<T> cursorImage1 = image1.cursor();
  3.   final Cursor<T> cursorImage2 = image2.cursor();
  4.   double dotProduct = 0.0d;
  5.   while (cursorImage1.hasNext()) {
  6.     cursorImage1.fwd();
  7.     cursorImage2.fwd();
  8.     float val1 = cursorImage1.get().getRealFloat();
  9.     float val2 = cursorImage2.get().getRealFloat();
  10.     dotProduct += val1 * val2;
  11.   }
  12.   return dotProduct;
  13. }

代码示例来源：origin: net.preibisch/multiview-simulation

  1. @Override
  2. public RandomAccessibleInterval< UnsignedShortType > getImage( final ViewId view )
  3. {
  4.   final long[] dim = new long[ sb.getImgs().get( view.getViewSetupId() ).numDimensions() ];
  5.   for ( int d = 0; d < dim.length; ++d )
  6.     dim[ d ] = sb.getImgs().get( view.getViewSetupId() ).dimension( d );
  7.   final Img< UnsignedShortType > img = ArrayImgs.unsignedShorts( dim );
  8.   final Cursor< FloatType > in = sb.getImgs().get( view.getViewSetupId() ).cursor();
  9.   final Cursor< UnsignedShortType > out = img.cursor();
  10.   while ( in.hasNext() )
  11.     out.next().set( Math.round( in.next().get() ) );
  12.   return img;
  13. }

代码示例来源：origin: net.imagej/imagej-deprecated

  1. private static < O extends RealType< O >> void fillImage( Img< O > img )
  2.   {
  3.     Random rng = new Random();
  4.     Cursor< O > cursor = img.cursor();
  5.     while ( cursor.hasNext() )
  6.     {
  7.       double value = 256 * rng.nextDouble();
  8.       cursor.next().setReal( value );
  9.     }
  10.   }
  11. }

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