mpicbg.trakem2.util

Class Downsampler

java.lang.Object

mpicbg.trakem2.util.Downsampler

public final class Downsampler
extends Object

Author:

Stephan Saalfeld saalfeld@mpi-cbg.de

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Downsampler.Entry
static class	Downsampler.Pair<A,B>

Constructor Summary

Constructors

Constructor and Description
Downsampler()

Method Summary

Modifier and Type	Method and Description
static Downsampler.Pair<ByteProcessor,ByteProcessor>	downsampleAlphaAndOutside(ByteProcessor aAlpha, ByteProcessor aOutside) Combine an alpha and outside mask into a downsampled alpha and outside mask.
static ByteProcessor	downsampleByteProcessor(ByteProcessor a)
static ByteProcessor	downsampleByteProcessor(ByteProcessor a, int level)
static Downsampler.Pair<ColorProcessor,byte[][]>	downsampleColor(ColorProcessor a) Create a downsampled version of a ColorProcessor and the mapping of its red, green and blue channels into three unsigned byte arrays.
static ColorProcessor	downsampleColorProcessor(ColorProcessor a)
static ColorProcessor	downsampleColorProcessor(ColorProcessor a, int level)
static Downsampler.Pair<FloatProcessor,byte[]>	downsampleFloat(FloatProcessor a) Create a downsampled version of a FloatProcessor and the mapping of its [min,max] range into an unsigned byte array.
static FloatProcessor	downsampleFloatProcessor(FloatProcessor a)
static FloatProcessor	downsampleFloatProcessor(FloatProcessor a, int level)
static ImageProcessor	downsampleImageProcessor(ImageProcessor a) Convenience call for abstract ImageProcessor.
static ImageProcessor	downsampleImageProcessor(ImageProcessor a, int level) Convenience call for abstract ImageProcessor.
static ByteProcessor	downsampleOutside(ByteProcessor aOutside) Downsample and outside mask.
static Downsampler.Pair<ShortProcessor,byte[]>	downsampleShort(ShortProcessor a) Create a downsampled version of a ShortProcessor and the mapping of its [min,max] range into an unsigned byte array.
static ShortProcessor	downsampleShortProcessor(ShortProcessor a)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Downsampler

public Downsampler()

Method Detail

downsampleByteProcessor

public static final ByteProcessor downsampleByteProcessor(ByteProcessor a)

downsampleByteProcessor

public static final ByteProcessor downsampleByteProcessor(ByteProcessor a,
                                                          int level)

downsampleShortProcessor

public static final ShortProcessor downsampleShortProcessor(ShortProcessor a)

downsampleFloatProcessor

public static final FloatProcessor downsampleFloatProcessor(FloatProcessor a,
                                                            int level)

downsampleFloatProcessor

public static final FloatProcessor downsampleFloatProcessor(FloatProcessor a)

downsampleColorProcessor

public static final ColorProcessor downsampleColorProcessor(ColorProcessor a)

downsampleColorProcessor

public static final ColorProcessor downsampleColorProcessor(ColorProcessor a,
                                                            int level)

downsampleImageProcessor

public static final ImageProcessor downsampleImageProcessor(ImageProcessor a)

Convenience call for abstract ImageProcessor. Do not use if you know the type of the processor to save the time for type checking.

Parameters:

a -

Returns:

downsampleImageProcessor

public static final ImageProcessor downsampleImageProcessor(ImageProcessor a,
                                                            int level)

Convenience call for abstract ImageProcessor. Do not use if you know the type of the processor to save the time for type checking.

Parameters:

a -

level - pyramid level in a power of 2 scale pyramid

Returns:

downsampleShort

public static final Downsampler.Pair<ShortProcessor,byte[]> downsampleShort(ShortProcessor a)

Create a downsampled version of a ShortProcessor and the mapping of its [min,max] range into an unsigned byte array.

Parameters:

a -

Returns:

Pair.a downsampled ShortProcessor Pair.b mapped into unsigned byte

downsampleFloat

public static final Downsampler.Pair<FloatProcessor,byte[]> downsampleFloat(FloatProcessor a)

Create a downsampled version of a FloatProcessor and the mapping of its [min,max] range into an unsigned byte array.

Parameters:

a -

Returns:

Pair.a downsampled FloatProcessor Pair.b mapped into unsigned byte

downsampleColor

public static final Downsampler.Pair<ColorProcessor,byte[][]> downsampleColor(ColorProcessor a)

Create a downsampled version of a ColorProcessor and the mapping of its red, green and blue channels into three unsigned byte arrays.

Parameters:

a -

Returns:

Pair.a downsampled ColorProcessor Pair.b red, green, blue channels as byte[] each

downsampleAlphaAndOutside

public static final Downsampler.Pair<ByteProcessor,ByteProcessor> downsampleAlphaAndOutside(ByteProcessor aAlpha,
                                                                                            ByteProcessor aOutside)

Combine an alpha and outside mask into a downsampled alpha and outside mask. Those pixels not fully covered in the outside mask are set to 0, all others to their interpolated value.

Parameters:

aAlpha -

aOutside -

Returns:

downsampleOutside

public static final ByteProcessor downsampleOutside(ByteProcessor aOutside)

Downsample and outside mask. Those pixels not fully covered in the outside mask are set to 0, all others to 255.

Parameters:

aOutside -

Returns: