Class ContrastStretch

java.lang.Object
  |
  +--java.lang.Thread
        |
        +--ContrastStretch

public class ContrastStretch

extends java.lang.Thread

Contrast Stretch stretches the contrast range of an image

Author:

Tim Sharman

See Also:

code.iface.contrast

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

ContrastStretch()

Method Summary

int[]	cutoff_stretch(int[] src, int width, int height, float cutoff, int uplim, int lolim) Creates an image array for an image which has been contrast stretched In this case it is done using the cutoff method
int[]	normal_stretch(int[] src, int width, int height, int uplim, int lolim) Creates an image array for an image which has been contrast stretched
int[]	percentile_stretch(int[] src, int width, int height, float high, float low, int uplim, int lolim) Creates an image array for an image which has been contrast stretched In this case it is done using the percentile method

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getContextClassLoader, getName, getPriority, getThreadGroup, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, run, setContextClassLoader, setDaemon, setName, setPriority, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Constructor Detail

ContrastStretch

public ContrastStretch()

Method Detail

normal_stretch

public int[] normal_stretch(int[] src,
                            int width,
                            int height,
                            int uplim,
                            int lolim)

Creates an image array for an image which has been contrast stretched

Parameters:

src - Image array to be stretched

width - the width of the image

height - the height of the image

uplim - The upper limit for the values to be stretched between

lolim - The lower limit for the values to be stretched between

Returns:

An image array representing the stretched image

cutoff_stretch

public int[] cutoff_stretch(int[] src,
                            int width,
                            int height,
                            float cutoff,
                            int uplim,
                            int lolim)

Creates an image array for an image which has been contrast stretched In this case it is done using the cutoff method

Parameters:

src - Image array to be stretched

width - The width of the image

height - The height of the image

cutoff - The scale value used in cutting off low values

uplim - The upper limit for the values to be stretched between

lolim - The lower limit for the values to be stretched between

Returns:

An image array representing the stretched image

percentile_stretch

public int[] percentile_stretch(int[] src,
                                int width,
                                int height,
                                float high,
                                float low,
                                int uplim,
                                int lolim)

Creates an image array for an image which has been contrast stretched In this case it is done using the percentile method

Parameters:

src - Image array to be stretched

width - The width of the image

height - The height of the image

high - The upper percentage value for the histogram cutoff

low - The lower percentage value for the histogram cutoff

uplim - The upper limit for the values to be stretched between

lolim - The lower limit for the values to be stretched between

Returns:

An image array representing the stretched image