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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 makeGaussianPyramid</title> <meta name="keywords" content="makeGaussianPyramid"> <meta name="description" content="makeGaussianPyramid - creates a Gaussian pyramid from 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> > makeGaussianPyramid.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>makeGaussianPyramid</h1><h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>makeGaussianPyramid - creates a Gaussian pyramid from 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 pyr = makeGaussianPyramid(map,type,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"> makeGaussianPyramid - creates a Gaussian pyramid from map. pyr = makeGaussianPyramid(map,type) Creates a Gaussian pyramid by blurring and subsampling map repeatedly, as long as both width and height are larger than 1. type: 'dyadic' or 'sqrt2' pyr = makeGaussianPyramid(map,type,depth) Creates at most depth levels. See also <a href="makeDyadicPyramid.html" class="code" title="function pyr = makeDyadicPyramid(map,varargin)">makeDyadicPyramid</a>, <a href="makeSqrt2Pyramid.html" class="code" title="function pyr = makeSqrt2Pyramid(map,varargin)">makeSqrt2Pyramid</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="makeDyadicPyramid.html" class="code" title="function pyr = makeDyadicPyramid(map,varargin)">makeDyadicPyramid</a> makeDyadicPyramid - creates a dyadic Gaussian pyramid.</li><li><a href="makeSqrt2Pyramid.html" class="code" title="function pyr = makeSqrt2Pyramid(map,varargin)">makeSqrt2Pyramid</a> makeSqrt2Pyramid - creates a sqrt(2) Gaussian pyramid.</li></ul>This function is called by:<ul style="list-style-image:url(../matlabicon.gif)"><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="makeRedGreenPyramid.html" class="code" title="function [rgPyr,rPyr,gPyr] = makeRedGreenPyramid(image,type)">makeRedGreenPyramid</a> makeRedGreenPyramid - creates a red-green opponency 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">% makeGaussianPyramid - creates a Gaussian pyramid from map.</span>0002 <span class="comment">%</span>0003 <span class="comment">% pyr = makeGaussianPyramid(map,type)</span>0004 <span class="comment">% Creates a Gaussian pyramid by blurring and subsampling</span>0005 <span class="comment">% map repeatedly, as long as both width and height are</span>0006 <span class="comment">% larger than 1.</span>0007 <span class="comment">% type: 'dyadic' or 'sqrt2'</span>0008 <span class="comment">%</span>0009 <span class="comment">% pyr = makeGaussianPyramid(map,type,depth)</span>0010 <span class="comment">% Creates at most depth levels.</span>0011 <span class="comment">%</span>0012 <span class="comment">% See also makeDyadicPyramid, makeSqrt2Pyramid, dataStructures.</span>0013 0014 <span class="comment">% This file is part of the SaliencyToolbox - Copyright (C) 2006-2007</span>0015 <span class="comment">% by Dirk B. Walther and the California Institute of Technology.</span>0016 <span class="comment">% See the enclosed LICENSE.TXT document for the license agreement.</span>0017 <span class="comment">% More information about this project is available at:</span>0018 <span class="comment">% http://www.saliencytoolbox.net</span>0019 0020 <a name="_sub0" href="#_subfunctions" class="code">function pyr = makeGaussianPyramid(map,type,varargin)</a>0021 0022 <span class="keyword">if</span> (isempty(varargin)) depth = -1;0023 <span class="keyword">else</span> depth = varargin{1}; <span class="keyword">end</span>0024 0025 <span class="keyword">switch</span> type0026 <span class="keyword">case</span> <span class="string">'dyadic'</span>0027 pyr = <a href="makeDyadicPyramid.html" class="code" title="function pyr = makeDyadicPyramid(map,varargin)">makeDyadicPyramid</a>(map,depth);0028 <span class="keyword">case</span> <span class="string">'sqrt2'</span>0029 pyr = <a href="makeSqrt2Pyramid.html" class="code" title="function pyr = makeSqrt2Pyramid(map,varargin)">makeSqrt2Pyramid</a>(map,depth);0030 <span class="keyword">otherwise</span>0031 <a href="fatal.html" class="code" title="function fatal(message)">fatal</a>([<span class="string">'Unknown pyramidType: '</span> type]);0032 <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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