jfits
Class ScaleFactory

java.lang.Object
  jfits.ScaleFactory

public class ScaleFactory
extends Object

This class is based on the IVOA Fits package. The only difference is that we work on a single color band (GRAY color model) to reduce the memory demands.

   Current Version
   ===============
   ID:            $Id: SlowScaleUtils.java,v 1.1 2004/07/23 18:52:35 carliles Exp $
   Revision:      $Revision: 1.1 $
   Date/time:     $Date: 2004/07/23 18:52:35 $
   

Array operations that should be implemented in one method, but which have to be reimplemented for each primitive data type just to have the right type in the damn parameter list.

Nested Class Summary

static class	ScaleFactory.ByteScaler
static class	ScaleFactory.DoubleScaler
static class	ScaleFactory.FloatScaler
static class	ScaleFactory.IntScaler
static interface	ScaleFactory.Scaler
static class	ScaleFactory.ShortScaler

Field Summary

static int	ASINH
protected static double[]	BYTE_LOG_MAP
static ScaleFactory.Scaler	BYTE_SCALER
protected static double[]	BYTE_SQRT_MAP
static ScaleFactory.Scaler	DOUBLE_SCALER
static ScaleFactory.Scaler	FLOAT_SCALER
static int	HIST_EQ
static ScaleFactory.Scaler	INT_SCALER
static int	LINEAR
static int	LOG
static String[]	SCALE_NAMES
protected static double[]	SHORT_LOG_MAP
static ScaleFactory.Scaler	SHORT_SCALER
protected static double[]	SHORT_SQRT_MAP
static int	SQUARE
static int	SQUARE_ROOT

Constructor Summary

ScaleFactory()

Method Summary

static FitsHistogram	computeHistogram(byte[][] data, double bZero, double bScale) Finds the minimum and maximum data values in data.
static FitsHistogram	computeHistogram(double[][] data, double bZero, double bScale) Finds the minimum and maximum data values in data.
static FitsHistogram	computeHistogram(float[][] data, double bZero, double bScale) Finds the minimum and maximum data values in data.
static FitsHistogram	computeHistogram(int[][] data, double bZero, double bScale) Finds the minimum and maximum data values in data.
static FitsHistogram	computeHistogram(short[][] data, double bZero, double bScale) Finds the minimum and maximum data values in data.
protected static double[]	createLogMap(int size)
protected static double[]	createSqrtMap(int size)
static String[]	getScaleNames()
static ScaleFactory.Scaler	getScaler(Object data)
static String	revision()
static short[]	scale(Object data, short[] result, int width, int height, double bZero, double bScale, double min, double max, double sigma, FitsHistogram hist, int scaleMethod)

Methods inherited from class java.lang.Object

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

Field Detail

SCALE_NAMES

public static final String[] SCALE_NAMES

LINEAR

public static final int LINEAR

See Also:

Constant Field Values

LOG

public static final int LOG

See Also:

Constant Field Values

SQUARE_ROOT

public static final int SQUARE_ROOT

See Also:

Constant Field Values

SQUARE

public static final int SQUARE

See Also:

Constant Field Values

HIST_EQ

public static final int HIST_EQ

See Also:

Constant Field Values

ASINH

public static final int ASINH

See Also:

Constant Field Values

BYTE_SCALER

public static final ScaleFactory.Scaler BYTE_SCALER

SHORT_SCALER

public static final ScaleFactory.Scaler SHORT_SCALER

INT_SCALER

public static final ScaleFactory.Scaler INT_SCALER

FLOAT_SCALER

public static final ScaleFactory.Scaler FLOAT_SCALER

DOUBLE_SCALER

public static final ScaleFactory.Scaler DOUBLE_SCALER

BYTE_SQRT_MAP

protected static final double[] BYTE_SQRT_MAP

BYTE_LOG_MAP

protected static final double[] BYTE_LOG_MAP

SHORT_SQRT_MAP

protected static final double[] SHORT_SQRT_MAP

SHORT_LOG_MAP

protected static final double[] SHORT_LOG_MAP

Constructor Detail

ScaleFactory

public ScaleFactory()

Method Detail

getScaleNames

public static String[] getScaleNames()

computeHistogram

public static FitsHistogram computeHistogram(byte[][] data,
                                             double bZero,
                                             double bScale)

Finds the minimum and maximum data values in data.

computeHistogram

public static FitsHistogram computeHistogram(short[][] data,
                                             double bZero,
                                             double bScale)

Finds the minimum and maximum data values in data.

computeHistogram

public static FitsHistogram computeHistogram(int[][] data,
                                             double bZero,
                                             double bScale)

Finds the minimum and maximum data values in data.

computeHistogram

public static FitsHistogram computeHistogram(float[][] data,
                                             double bZero,
                                             double bScale)

Finds the minimum and maximum data values in data.

computeHistogram

public static FitsHistogram computeHistogram(double[][] data,
                                             double bZero,
                                             double bScale)

Finds the minimum and maximum data values in data.

scale

public static short[] scale(Object data,
                            short[] result,
                            int width,
                            int height,
                            double bZero,
                            double bScale,
                            double min,
                            double max,
                            double sigma,
                            FitsHistogram hist,
                            int scaleMethod)

getScaler

public static ScaleFactory.Scaler getScaler(Object data)

createSqrtMap

protected static double[] createSqrtMap(int size)

createLogMap

protected static double[] createLogMap(int size)

revision

public static String revision()

Returns:

CVS Revision number.