ij.plugin
Class ContrastEnhancer

java.lang.Object
  extended by ij.plugin.ContrastEnhancer
All Implemented Interfaces:
Measurements, PlugIn

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

Implements ImageJ's Process/Enhance Contrast command.


Field Summary
 
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
 void equalize(ImagePlus imp)
           
 void equalize(ImageProcessor ip)
          Changes the tone curves of images.
 void run(java.lang.String arg)
          This method is called when the plugin is loaded.
 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
 

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

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)

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).