ij.plugin
Class ContrastEnhancer

java.lang.Object
  ij.plugin.ContrastEnhancer

All Implemented Interfaces:

ij.measure.Measurements, PlugIn

public class ContrastEnhancer
extends java.lang.Object
implements PlugIn, ij.measure.Measurements

Implements ImageJ's Process/Enhance Contrast command.

Field Summary

(package private) boolean	classicEqualization
(package private) static boolean	entireImage
(package private) static boolean	equalize
(package private) int	max
(package private) static boolean	normalize
(package private) static boolean	processStack
(package private) int	range
(package private) static double	saturated
(package private) int	stackSize
(package private) boolean	updateSelectionOnly
(package private) static boolean	useStackHistogram

Fields inherited from interface ij.measure.Measurements

AREA, AREA_FRACTION, CENTER_OF_MASS, CENTROID, CIRCULARITY, ELLIPSE, FERET, INTEGRATED_DENSITY, INVERT_Y, KURTOSIS, LABELS, LIMIT, MAX_STANDARDS, MEAN, MEDIAN, MIN_MAX, MODE, PERIMETER, RECT, SKEWNESS, SLICE, STD_DEV

Constructor Summary

ContrastEnhancer()

Method Summary

(package private) void	applyTable(ImageProcessor ip, int[] lut)
void	equalize(ImagePlus imp)
void	equalize(ImageProcessor ip) Changes the tone curves of images.
(package private) void	normalize(ImageProcessor ip, double min, double max)
(package private) void	normalizeFloat(ImageProcessor ip, double min, double max)
void	run(java.lang.String arg) This method is called when the plugin is loaded.
(package private) boolean	showDialog(ImagePlus imp)
void	stretchHistogram(ImagePlus imp, double saturated)
void	stretchHistogram(ImageProcessor ip, double saturated)
void	stretchHistogram(ImageProcessor ip, double saturated, ImageStatistics stats)

Methods inherited from class java.lang.Object

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

Field Detail

max

int max

range

int range

classicEqualization

boolean classicEqualization

stackSize

int stackSize

updateSelectionOnly

boolean updateSelectionOnly

equalize

static boolean equalize

normalize

static boolean normalize

processStack

static boolean processStack

useStackHistogram

static boolean useStackHistogram

entireImage

static boolean entireImage

saturated

static double saturated

Constructor Detail

ContrastEnhancer

public ContrastEnhancer()

Method Detail

run

public void run(java.lang.String arg)

Description copied from interface: PlugIn

This method is called when the plugin is loaded. 'arg', which may be blank, is the argument specified for this plugin in IJ_Props.txt.

Specified by:

run in interface PlugIn

showDialog

boolean showDialog(ImagePlus imp)

stretchHistogram

public void stretchHistogram(ImagePlus imp,
                             double saturated)

stretchHistogram

public void stretchHistogram(ImageProcessor ip,
                             double saturated)

stretchHistogram

public void stretchHistogram(ImageProcessor ip,
                             double saturated,
                             ImageStatistics stats)

normalize

void normalize(ImageProcessor ip,
               double min,
               double max)

applyTable

void applyTable(ImageProcessor ip,
                int[] lut)

normalizeFloat

void normalizeFloat(ImageProcessor ip,
                    double min,
                    double max)

equalize

public void equalize(ImagePlus imp)

equalize

public void equalize(ImageProcessor ip)

Changes the tone curves of images. It should bring up the detail in the flat regions of your image. Histogram Equalization can enhance meaningless detail and hide important but small high-contrast features. This method uses a similar algorithm, but uses the square root of the histogram values, so its effects are less extreme. Hold the alt key down to use the standard histogram equalization algorithm. This code was contributed by Richard Kirk (rak@cre.canon.co.uk).