<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html><head><meta name="robots" content="noindex"> <meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"> <title>ITK: tAdaptiveHistogramEqualizationImageFilter Class Reference</title> <link href="DoxygenStyle.css" rel="stylesheet" type="text/css"> </head><body bgcolor="#ffffff"> <!-- Section customized for INSIGHT : Tue Jul 17 01:02:45 2001 --> <center> <a href="index.html" class="qindex">Main Page</a> <a href="modules.html" class="qindex">Groups</a> <a href="namespaces.html" class="qindex">Namespace List</a> <a href="hierarchy.html" class="qindex">Class Hierarchy</a> <a href="classes.html" class="qindex">Alphabetical List</a> <a href="annotated.html" class="qindex">Compound List</a> <a href="files.html" class="qindex">File List</a> <a href="namespacemembers.html" class="qindex">Namespace Members</a> <a href="functions.html" class="qindex">Compound Members</a> <a href="globals.html" class="qindex">File Members</a> <a href="pages.html" class="qindex">Concepts</a></center> <!-- Generated by Doxygen 1.5.9 --> <div class="contents"> <h1>tAdaptiveHistogramEqualizationImageFilter Class Reference<br> <small> [<a class="el" href="group__ImageEnhancement.html">Image Enhancement Filters</a>]</small> </h1><!-- doxytag: class="tAdaptiveHistogramEqualizationImageFilter" -->Power Law Adaptive Histogram Equalization. <a href="#_details">More...</a> <p> <code>#include <<a class="el" href="itkOptAdaptiveHistogramEqualizationImageFilter_8h_source.html">itkOptAdaptiveHistogramEqualizationImageFilter.h</a>></code> <p> <table border="0" cellpadding="0" cellspacing="0"> <tr><td></td></tr> </table> <hr><a name="_details"></a><h2>Detailed Description</h2> Power Law Adaptive Histogram Equalization. <p> Histogram equalization modifies the contrast in an image. The AdaptiveHistogramEqualizationImageFilter is a superset of many contrast enhancing filters. By modifying its parameters (alpha, beta, and window), the AdaptiveHistogramEqualizationImageFilter can produce an adaptively equalized histogram or a version of unsharp mask (local mean subtraction). Instead of applying a strict histogram equalization in a window about a pixel, this filter prescribes a mapping function (power law) controlled by the parameters alpha and beta.<p> The parameter alpha controls how much the filter acts like the classical histogram equalization method (alpha=0) to how much the filter acts like an unsharp mask (alpha=1).<p> The parameter beta controls how much the filter acts like an unsharp mask (beta=0) to much the filter acts like pass through (beta=1, with alpha=1).<p> The parameter window controls the size of the region over which local statistics are calculated.<p> By altering alpha, beta and window, a host of equalization and unsharp masking filters is available.<p> For detail description, reference "Adaptive Image Contrast Enhancement using Generalizations of Histogram Equalization." J.Alex Stark. IEEE Transactions on Image Processing, May 2000. <hr>The documentation for this class was generated from the following file:<ul> <li><a class="el" href="itkOptAdaptiveHistogramEqualizationImageFilter_8h_source.html">itkOptAdaptiveHistogramEqualizationImageFilter.h</a></ul> </div> <hr><address><small> Generated at Fri May 8 00:43:11 2009 for ITK by <a href="http://www.stack.nl/~dimitri/doxygen/index.html"> <img src="http://www.stack.nl/~dimitri/doxygen/doxygen.png" alt="doxygen" align="middle" border=0 width=110 height=53> </a> 1.5.9 written by <a href="mailto:dimitri@stack.nl">Dimitri van Heesch</a>, © 1997-2000</small></address> </body> </html>
distrib
>
Mandriva
>
2010.0
>
i586
>
media
>
contrib-release
>
by-pkgid
>
d5e74628f0e673bb8680aebce32b2c04
>
files
>
11832
