gaborfiltermap.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"><html><head> <title>Description of gaborFilterMap</title> <meta name="keywords" content="gaborFilterMap"> <meta name="description" content="gaborFilterMap - compute a gabor-filtered version of a map."> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="generator" content="m2html © 2003 Guillaume Flandin"> <meta name="robots" content="index, follow"> <link type="text/css" rel="stylesheet" href="../m2html.css"></head><body><a name="_top"></a><div><a href="../index.html">Home</a> > <a href="#">mfiles</a> > gaborFilterMap.m</div><!--<table width="100%"><tr><td align="left"><a href="../index.html"><img alt="<" border="0" src="../left.png"> Master index</a></td><td align="right"><a href="index.html">Index for .\mfiles <img alt=">" border="0" src="../right.png"></a></td></tr></table>--><h1>gaborFilterMap</h1><h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>gaborFilterMap - compute a gabor-filtered version of a map.</strong></div><h2><a name="_synopsis"></a>SYNOPSIS <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>function resultMap = gaborFilterMap(map,gaborParams,angle) </strong></div><h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="fragment"><pre class="comment"> gaborFilterMap - compute a gabor-filtered version of a map. result = gaborFilterMap(map,gaborParams,angle) Convolves the map data with a gabor filter with gaborParams at orientation angle. gaborParams is a struct with the following fields: filterPeriod - the period of the filter in pixels elongation - the ratio of length versus width filterSize - the size of the filter in pixels stddev - the standard deviation of the Gaussian in pixels See also <a href="makeGaborFilter.html" class="code" title="function filter = makeGaborFilter(gaborParams, angle, varargin)">makeGaborFilter</a>, <a href="makeOrientationPyramid.html" class="code" title="function oriPyr = makeOrientationPyramid(intPyr,gaborParams,angle)">makeOrientationPyramid</a>, <a href="defaultSaliencyParams.html" class="code" title="function params = defaultSaliencyParams(varargin)">defaultSaliencyParams</a>.</pre></div><!-- crossreference --><h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>This function calls:<ul style="list-style-image:url(../matlabicon.gif)"><li><a href="makeGaborFilter.html" class="code" title="function filter = makeGaborFilter(gaborParams, angle, varargin)">makeGaborFilter</a> makeGaborFilter - returns a 3d stack of 2d Gabor filters for each phase.</li><li><a href="mexConv2PreserveEnergy.html" class="code" title="function result = mexConv2PreserveEnergy(data,filter)">mexConv2PreserveEnergy</a> mexConv2PreserveEnergy - 2d convolution that avoids bleeding energy over the edge (mex file).</li><li><a href="timeString.html" class="code" title="function s = timeString()">timeString</a> timeString returns the current time and date in a convenient string format.</li></ul>This function is called by:<ul style="list-style-image:url(../matlabicon.gif)"><li><a href="makeOrientationPyramid.html" class="code" title="function oriPyr = makeOrientationPyramid(intPyr,gaborParams,angle)">makeOrientationPyramid</a> makeOrientationPyramid - creates an orientation pyramid.</li></ul><!-- crossreference --><h2><a name="_source"></a>SOURCE CODE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="fragment"><pre>0001 <span class="comment">% gaborFilterMap - compute a gabor-filtered version of a map.</span>0002 <span class="comment">%</span>0003 <span class="comment">% result = gaborFilterMap(map,gaborParams,angle)</span>0004 <span class="comment">% Convolves the map data with a gabor filter with</span>0005 <span class="comment">% gaborParams at orientation angle.</span>0006 <span class="comment">%</span>0007 <span class="comment">% gaborParams is a struct with the following fields:</span>0008 <span class="comment">% filterPeriod - the period of the filter in pixels</span>0009 <span class="comment">% elongation - the ratio of length versus width</span>0010 <span class="comment">% filterSize - the size of the filter in pixels</span>0011 <span class="comment">% stddev - the standard deviation of the Gaussian in pixels</span>0012 <span class="comment">%</span>0013 <span class="comment">% See also makeGaborFilter, makeOrientationPyramid, defaultSaliencyParams.</span>0014 0015 <span class="comment">% This file is part of the SaliencyToolbox - Copyright (C) 2006-2007</span>0016 <span class="comment">% by Dirk B. Walther and the California Institute of Technology.</span>0017 <span class="comment">% See the enclosed LICENSE.TXT document for the license agreement.</span>0018 <span class="comment">% More information about this project is available at:</span>0019 <span class="comment">% http://www.saliencytoolbox.net</span>0020 0021 <a name="_sub0" href="#_subfunctions" class="code">function resultMap = gaborFilterMap(map,gaborParams,angle)</a>0022 0023 <span class="comment">% create the filters</span>0024 gf = <a href="makeGaborFilter.html" class="code" title="function filter = makeGaborFilter(gaborParams, angle, varargin)">makeGaborFilter</a>(gaborParams, angle);0025 0026 <span class="comment">% convolve the map with the filters</span>0027 <span class="keyword">for</span> p = 1:length(gaborParams.phases)0028 fres(:,:,p) = <a href="mexConv2PreserveEnergy.html" class="code" title="function result = mexConv2PreserveEnergy(data,filter)">mexConv2PreserveEnergy</a>(map.data,gf(:,:,p)); 0029 <span class="keyword">end</span>0030 0031 resultMap.origImage = map.origImage;0032 resultMap.label = sprintf(<span class="string">'Gabor%3.1f'</span>,angle);0033 resultMap.data = sum(abs(fres),3);0034 resultMap.date = <a href="timeString.html" class="code" title="function s = timeString()">timeString</a>;0035 resultMap.parameters.gaborParams = gaborParams;</pre></div><hr><address>Generated on Fri 07-Sep-2007 14:42:18 by <strong><a href="http://www.artefact.tk/software/matlab/m2html/">m2html</a></strong> © 2003</address></body></html>⌨️ 快捷键说明
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