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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 makeFeaturePyramids</title> <meta name="keywords" content="makeFeaturePyramids"> <meta name="description" content="makeFeaturePyramids - creates a pyramid for featureType."> <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> > makeFeaturePyramids.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>makeFeaturePyramids</h1><h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>makeFeaturePyramids - creates a pyramid for featureType.</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 pyrs = makeFeaturePyramids(img,featureType,salParams,varargin) </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"> makeFeaturePyramids - creates a pyramid for featureType. pyrs = makeFeaturePyramids(img,featureType,salParams,varargin) Creates a feature pyramid with the parameters: img: the Image structure for the source image. featureType: what feature ('Intensity','Color','Orientation', 'Hue','Skin','TopDown'); salParams: the saliency parameters for this operation; varargin: additional info, depending on the featureType: 'Orientation': varargin{1} may hold an auxiliary intensity pyramid; 'TopDown': varargin{1} must hold a vector of auxiliary maps for top-down attention; 'Hue': varargin{1} must contain hueParams. pyrs: a vector of pyramids of type featureType. See also <a href="makeSaliencyMap.html" class="code" title="function [salmap, saliencyData] = makeSaliencyMap(img, salParams, varargin)">makeSaliencyMap</a>, <a href="dataStructures.html" class="code" title="">dataStructures</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="fatal.html" class="code" title="function fatal(message)">fatal</a> fatal(message) - exits with a fatal error message.</li><li><a href="makeBlueYellowPyramid.html" class="code" title="function [byPyr,bPyr,yPyr] = makeBlueYellowPyramid(image,type)">makeBlueYellowPyramid</a> makeBlueYellowPyramid - creates a blue-yellow opponency pyramid.</li><li><a href="makeHuePyramid.html" class="code" title="function huePyr = makeHuePyramid(image,type,hueParams,varargin)">makeHuePyramid</a> makeHuePyramid - creates a hue distance pyramid.</li><li><a href="makeIntensityPyramid.html" class="code" title="function intPyr = makeIntensityPyramid(image,type)">makeIntensityPyramid</a> makeIntensityPyramid - creates an intensity pyramid.</li><li><a href="makeOrientationPyramid.html" class="code" title="function oriPyr = makeOrientationPyramid(intPyr,gaborParams,angle)">makeOrientationPyramid</a> makeOrientationPyramid - creates an orientation pyramid.</li><li><a href="makeRedGreenPyramid.html" class="code" title="function [rgPyr,rPyr,gPyr] = makeRedGreenPyramid(image,type)">makeRedGreenPyramid</a> makeRedGreenPyramid - creates a red-green opponency pyramid</li><li><a href="skinHueParams.html" class="code" title="function params = skinHueParams">skinHueParams</a> skinHueParams - returns a parameter set for skin hue.</li></ul>This function is called by:<ul style="list-style-image:url(../matlabicon.gif)"><li><a href="makeSaliencyMap.html" class="code" title="function [salmap, saliencyData] = makeSaliencyMap(img, salParams, varargin)">makeSaliencyMap</a> makeSaliencyMap - creates a saliency map for an image.</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">% makeFeaturePyramids - creates a pyramid for featureType.</span>0002 <span class="comment">%</span>0003 <span class="comment">% pyrs = makeFeaturePyramids(img,featureType,salParams,varargin)</span>0004 <span class="comment">% Creates a feature pyramid with the parameters:</span>0005 <span class="comment">% img: the Image structure for the source image.</span>0006 <span class="comment">% featureType: what feature ('Intensity','Color','Orientation',</span>0007 <span class="comment">% 'Hue','Skin','TopDown');</span>0008 <span class="comment">% salParams: the saliency parameters for this operation;</span>0009 <span class="comment">% varargin: additional info, depending on the featureType:</span>0010 <span class="comment">% 'Orientation': varargin{1} may hold an auxiliary</span>0011 <span class="comment">% intensity pyramid;</span>0012 <span class="comment">% 'TopDown': varargin{1} must hold a vector of auxiliary</span>0013 <span class="comment">% maps for top-down attention;</span>0014 <span class="comment">% 'Hue': varargin{1} must contain hueParams.</span>0015 <span class="comment">%</span>0016 <span class="comment">% pyrs: a vector of pyramids of type featureType.</span>0017 <span class="comment">%</span>0018 <span class="comment">% See also makeSaliencyMap, dataStructures.</span>0019 0020 <span class="comment">% This file is part of the SaliencyToolbox - Copyright (C) 2006-2007</span>0021 <span class="comment">% by Dirk B. Walther and the California Institute of Technology.</span>0022 <span class="comment">% See the enclosed LICENSE.TXT document for the license agreement.</span>0023 <span class="comment">% More information about this project is available at:</span>0024 <span class="comment">% http://www.saliencytoolbox.net</span>0025 0026 <a name="_sub0" href="#_subfunctions" class="code">function pyrs = makeFeaturePyramids(img,featureType,salParams,varargin)</a>0027 0028 <span class="comment">% These feature types require color images:</span>0029 colorTypes = {<span class="string">'Color'</span>,<span class="string">'Hue'</span>,<span class="string">'Skin'</span>};0030 <span class="keyword">if</span> (ismember(featureType,colorTypes) && img.dims == 2)0031 <span class="comment">% not a color image for color type? terminate with error</span>0032 fprintf([<span class="string">'Feature '''</span> featureType <span class="string">''' requires a color image!\n'</span> <span class="keyword">...</span>0033 <span class="string">'Use a color image or remove this feature from the\n'</span> <span class="keyword">...</span>0034 <span class="string">'saliency parameters!\n'</span>]);0035 error(<span class="string">'Could not process image.'</span>);0036 <span class="keyword">end</span>0037 0038 <span class="keyword">switch</span> featureType0039 0040 <span class="keyword">case</span> {<span class="string">'Intensity'</span>,<span class="string">'Intensities'</span>}0041 pyrs = <a href="makeIntensityPyramid.html" class="code" title="function intPyr = makeIntensityPyramid(image,type)">makeIntensityPyramid</a>(img,salParams.pyramidType);0042 0043 <span class="keyword">case</span> <span class="string">'Color'</span>0044 pyrs(1) = <a href="makeRedGreenPyramid.html" class="code" title="function [rgPyr,rPyr,gPyr] = makeRedGreenPyramid(image,type)">makeRedGreenPyramid</a>(img,salParams.pyramidType);0045 pyrs(2) = <a href="makeBlueYellowPyramid.html" class="code" title="function [byPyr,bPyr,yPyr] = makeBlueYellowPyramid(image,type)">makeBlueYellowPyramid</a>(img,salParams.pyramidType);0046 0047 <span class="keyword">case</span> {<span class="string">'Orientation'</span>,<span class="string">'Orientations'</span>}0048 <span class="comment">% varargin{1} could be an intensity pyramid, otherwise have to make one</span>0049 intPyr = [];0050 <span class="keyword">if</span> (~isempty(varargin))0051 <span class="keyword">if</span> (strcmp(<span class="string">'Intensity'</span>,varargin{1}.label))0052 intPyr = varargin{1};0053 <span class="keyword">end</span>0054 <span class="keyword">end</span>0055 <span class="keyword">if</span> (isempty(intPyr))0056 intPyr = <a href="makeIntensityPyramid.html" class="code" title="function intPyr = makeIntensityPyramid(image,type)">makeIntensityPyramid</a>(img,salParams.pyramidType);0057 <span class="keyword">end</span>0058 0059 <span class="keyword">for</span> ori = 1:length(salParams.oriAngles)0060 pyrs(ori) = <a href="makeOrientationPyramid.html" class="code" title="function oriPyr = makeOrientationPyramid(intPyr,gaborParams,angle)">makeOrientationPyramid</a>(intPyr,<span class="keyword">...</span>0061 salParams.gaborParams,salParams.oriAngles(ori));0062 <span class="keyword">end</span>0063 0064 <span class="keyword">case</span> <span class="string">'Hue'</span>0065 <span class="comment">% varargin{1} must contain the hueParams</span>0066 <span class="keyword">if</span> (isempty(varargin))0067 <a href="fatal.html" class="code" title="function fatal(message)">fatal</a>(<span class="string">'varargin{1} must contain hueParams for Hue Channel'</span>);0068 <span class="keyword">end</span> 0069 <span class="comment">% varargin{2} might contain an alternative label</span>0070 <span class="keyword">if</span> (length(varargin >= 2))0071 pyrs = <a href="makeHuePyramid.html" class="code" title="function huePyr = makeHuePyramid(image,type,hueParams,varargin)">makeHuePyramid</a>(img,salParams.pyramidType,varargin{1},varargin{2});0072 <span class="keyword">else</span>0073 pyrs = <a href="makeHuePyramid.html" class="code" title="function huePyr = makeHuePyramid(image,type,hueParams,varargin)">makeHuePyramid</a>(img,salParams.pyramidType,varargin{1});0074 <span class="keyword">end</span>0075 0076 <span class="keyword">case</span> <span class="string">'Skin'</span>0077 pyrs = <a href="makeHuePyramid.html" class="code" title="function huePyr = makeHuePyramid(image,type,hueParams,varargin)">makeHuePyramid</a>(img,salParams.pyramidType,<a href="skinHueParams.html" class="code" title="function params = skinHueParams">skinHueParams</a>,<span class="string">'Skin'</span>);0078 0079 <span class="keyword">case</span> <span class="string">'TopDown'</span>0080 <span class="keyword">if</span> isempty(varargin)0081 <a href="fatal.html" class="code" title="function fatal(message)">fatal</a>(<span class="string">'varargin{1} must contain a vector of TopDown maps'</span>);0082 <span class="keyword">end</span>0083 <span class="comment">% this is a dummy function that simply copies the auxiliary pyramids</span>0084 pyrs = varargin{1};0085 0086 <span class="keyword">otherwise</span>0087 <a href="fatal.html" class="code" title="function fatal(message)">fatal</a>([<span class="string">'Unknown feature: '</span> featureType]);0088 <span class="keyword">end</span></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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