volume
Class Equalize

java.lang.Object
  |
  +--volume.Equalize

public class Equalize

extends java.lang.Object

Plugin containing methods to equalize imageas and volumes. It is mainly useful to correct vignetting, i.e. anisotropic nonlinear illumination differences over the retinal image. Copyright (c) 1999-2003, Michael Abramoff. All rights reserved.

Constructor Summary

Equalize()

Method Summary

static int	getDefaultWindowSize()
static float[]	sliding(float[] image, int width, float center, int windowSize, boolean doShowProgress) Perform sliding window averaging on image.

Methods inherited from class java.lang.Object

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

Constructor Detail

Equalize

public Equalize()

Method Detail

getDefaultWindowSize

public static int getDefaultWindowSize()

sliding

public static float[] sliding(float[] image,
                              int width,
                              float center,
                              int windowSize,
                              boolean doShowProgress)

Perform sliding window averaging on image. Does NOT modify image. center will be the average value of the equalized image. Implements: I(x) = I(x) + m - Iavg(x, w) where Iavg(x,w) is the average intensity around x, and w the window size. Hoover, Goldbaum, IEEE TMI 22,8, pp 955, 2003. Can process masked images, where non-valid pixels have been set to NaN.

Parameters:

image - a float[] with the image vector.

width - the width of image in pixels.

center - a float value relative to which all pixels are equalized.

windowSize - the size of the sliding windows in pixels.

Returns:

a float[] with the equalized version of image.