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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 defaultLevelParams</title> <meta name="keywords" content="defaultLevelParams"> <meta name="description" content="defaultLevelParams - returns a default levelParams structure."> <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> > defaultLevelParams.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>defaultLevelParams</h1><h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>defaultLevelParams - returns a default levelParams structure.</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 levelParams = defaultLevelParams(pyramidType) </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"> defaultLevelParams - returns a default levelParams structure.
levelParams = defaultLevelParams
Returns a default structure with saliency parameters.
levelParams = defaultLevelParams(pyramidType)
Initializes parameters for a particular pyramidType:
'dyadic' - pyramids with downsampling by a factor of 2 (default)
'sqrt2' - pyramids with downsampling by a factor of sqrt(2)
This makes a difference for the levels for the computation of the
center-surround differences.
See also <a href="guiLevelParams.html" class="code" title="function varargout = guiLevelParams(varargin)">guiLevelParams</a>, <a href="centerSurround.html" class="code" title="function [featureMaps,csLevels] = centerSurround(pyr,params)">centerSurround</a>, <a href="winnerToImgCoords.html" class="code" title="function winImgCo = winnerToImgCoords(winner,params)">winnerToImgCoords</a>, <a href="defaultSaliencyParams.html" class="code" title="function params = defaultSaliencyParams(varargin)">defaultSaliencyParams</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)"></ul>This function is called by:<ul style="list-style-image:url(../matlabicon.gif)"><li><a href="defaultSaliencyParams.html" class="code" title="function params = defaultSaliencyParams(varargin)">defaultSaliencyParams</a> defaultSaliencyParams - returns a default salParams structure.</li><li><a href="guiLevelParams.html" class="code" title="function varargout = guiLevelParams(varargin)">guiLevelParams</a> guiLevelParams - a graphical user interface (GUI) to adjust parameter level parameters.</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">% defaultLevelParams - returns a default levelParams structure.</span>0002 <span class="comment">%</span>0003 <span class="comment">% levelParams = defaultLevelParams</span>0004 <span class="comment">% Returns a default structure with saliency parameters.</span>0005 <span class="comment">%</span>0006 <span class="comment">% levelParams = defaultLevelParams(pyramidType)</span>0007 <span class="comment">% Initializes parameters for a particular pyramidType:</span>0008 <span class="comment">% 'dyadic' - pyramids with downsampling by a factor of 2 (default)</span>0009 <span class="comment">% 'sqrt2' - pyramids with downsampling by a factor of sqrt(2)</span>0010 <span class="comment">% This makes a difference for the levels for the computation of the</span>0011 <span class="comment">% center-surround differences.</span>0012 <span class="comment">%</span>0013 <span class="comment">% See also guiLevelParams, centerSurround, winnerToImgCoords,</span>0014 <span class="comment">% defaultSaliencyParams, dataStructures.</span>0015 0016 <span class="comment">% This file is part of the SaliencyToolbox - Copyright (C) 2006-2007</span>0017 <span class="comment">% by Dirk B. Walther and the California Institute of Technology.</span>0018 <span class="comment">% See the enclosed LICENSE.TXT document for the license agreement.</span>0019 <span class="comment">% More information about this project is available at:</span>0020 <span class="comment">% http://www.saliencytoolbox.net</span>0021 0022 <a name="_sub0" href="#_subfunctions" class="code">function levelParams = defaultLevelParams(pyramidType)</a>0023 0024 <span class="keyword">if</span> (nargin < 1)0025 pyramidType = <span class="string">'dyadic'</span>;0026 <span class="keyword">end</span>0027 0028 <span class="comment">% These are the default levels for pyramidType='dyadic'.</span>0029 <span class="comment">% Note for comparison with the iNVT C++ code:</span>0030 <span class="comment">% Since Matlab starts counting at 1 and C++ at 0,</span>0031 <span class="comment">% you need to subtract 1 from the *Level values to obtain</span>0032 <span class="comment">% the equivalent values for the iNVT code.</span>0033 <span class="comment">% The *Delta values stay the same, of course.</span>0034 levelParams.minLevel = 3;0035 levelParams.maxLevel = 5;0036 levelParams.minDelta = 3;0037 levelParams.maxDelta = 4;0038 levelParams.mapLevel = 5;0039 0040 0041 <span class="comment">% these are the modified values for 'sqrt2'</span>0042 <span class="keyword">if</span> strcmp(pyramidType,<span class="string">'sqrt2'</span>)0043 levelParams.minLevel = levelParams.minLevel*2 - 1;0044 levelParams.maxLevel = levelParams.maxLevel*2 - 1;0045 levelParams.mapLevel = levelParams.mapLevel*2 - 1;0046 levelParams.minDelta = levelParams.minDelta*2;0047 levelParams.maxDelta = levelParams.maxDelta*2;0048 <span class="keyword">end</span>0049</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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