org.shared.image

Class IntensityImages

java.lang.Object

org.shared.image.IntensityImages

public class IntensityImages
extends Object

A static utility class for reading and writing intensity images represented as RealArrays.

Field Summary

Fields

Modifier and Type	Field and Description
protected static Map<String,int[]>	colormaps A mapping of color names to interpolating colormaps.

Method Summary

Methods

Modifier and Type	Method and Description
static BufferedImage	bytesToJpeg(byte[] data) Converts a byte array to a BufferedImage.
static BufferedImage	createImage(RealArray m, String cmName, double rangeMin, double rangeMax) Converts a RealArray to a BufferedImage.
protected static int[]	createInterpolatingColormap(int... args) Creates a colormap by interpolating between start, end, and intermediate colors.
static RealArray	createMatrix(BufferedImage image) Converts a BufferedImage to a RealArray.
static RealArray	createMatrix(byte[] data) Creates a RealArray from a byte array.
static RealArray	createMatrix(File file) Creates a RealArray from an image file.
protected static BufferedImage	ensureGrayscale(BufferedImage src) Ensures that an image is in grayscale, converting it if necessary.
static byte[]	jpegToBytes(BufferedImage bi) Converts a BufferedImage to a byte array.

Methods inherited from class java.lang.Object

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

Field Detail

colormaps

protected static final Map<String,int[]> colormaps

A mapping of color names to interpolating colormaps.

Method Detail

createImage

public static final BufferedImage createImage(RealArray m,
                        String cmName,
                        double rangeMin,
                        double rangeMax)

Converts a RealArray to a BufferedImage.

Parameters:

m - the intensity image.

cmName - the name of the colormap to display with.

rangeMin - the minimum intensity.

rangeMax - the maximum intensity.

Returns:

an image representation.

createMatrix

public static final RealArray createMatrix(BufferedImage image)

Converts a BufferedImage to a RealArray.

Parameters:

image - the original image.

Returns:

an intensity image representation.

createMatrix

public static final RealArray createMatrix(File file)
                                    throws IOException

Creates a RealArray from an image file.

Parameters:

file - the image file.

Returns:

the intensity image.

Throws:

IOException - when the load operation goes awry.

createMatrix

public static final RealArray createMatrix(byte[] data)
                                    throws IOException

Creates a RealArray from a byte array.

Parameters:

data - the binary data.

Returns:

the intensity image.

Throws:

IOException - when the load operation goes awry.

jpegToBytes

public static final byte[] jpegToBytes(BufferedImage bi)
                                throws IOException

Converts a BufferedImage to a byte array.

Parameters:

bi - the image.

Returns:

the binary data.

Throws:

IOException - when the encoding operation goes awry.

bytesToJpeg

public static final BufferedImage bytesToJpeg(byte[] data)
                                       throws IOException

Converts a byte array to a BufferedImage.

Parameters:

data - the binary data.

Returns:

the image.

Throws:

IOException - when the decoding operation goes awry.

ensureGrayscale

protected static final BufferedImage ensureGrayscale(BufferedImage src)

Ensures that an image is in grayscale, converting it if necessary.

createInterpolatingColormap

protected static final int[] createInterpolatingColormap(int... args)

Creates a colormap by interpolating between start, end, and intermediate colors.