📄 initializeimage.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 initializeImage</title> <meta name="keywords" content="initializeImage"> <meta name="description" content="initializeImage - initializes an image 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> > initializeImage.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>initializeImage</h1><h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>initializeImage - initializes an image 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 [Img,err] = initializeImage(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"> initializeImage - initializes an image structure. [Image,err] = initializeImage(filename); Initializes an Image structure given an image file name. The file name is assumed to be relative to IMG_DIR. If there is an error in reading the file, it is returned in err. Image = initializeImage(imgData); Initialize an Image structure with the image content instead of the file name. [Image,err] = initializeImage(filename,imgData); Initialize an Image structure with both the image content and the file name. [Image,err] = initializeImage(...,type); Gives Image the text label type. Default is 'unknown'. The Image structure has the following members: filename - the file name relative to IMG_DIR data - the actual content of the image Each image structure has to contain the filename or the data field. It can have both. type - some text label size - the size of the image dims - the number of dimensions of the image (2 or 3) date - the time and date this structure was created See also <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="declareGlobal.html" class="code" title="">declareGlobal</a> declareGlobal - declares global variables.</li><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="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="batchSaliency.html" class="code" title="function [salMaps,fixations] = batchSaliency(images,numFixations,params)">batchSaliency</a> batchSaliency - batch processing of lists of images.</li><li><a href="contrastModulate.html" class="code" title="function resultImg = contrastModulate(img, modulationMap, varargin)">contrastModulate</a> contrastModulate - contrast modulates an image according to a map</li><li><a href="guiSaliency.html" class="code" title="function varargout = guiSaliency(varargin)">guiSaliency</a> guiSaliency - a graphical user interface (GUI) version of the saliency code.</li><li><a href="runSaliency.html" class="code" title="function runSaliency(inputImage,varargin)">runSaliency</a> runSaliency - compute and display saliency map and fixations.</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">% initializeImage - initializes an image structure.</span>0002 <span class="comment">%</span>0003 <span class="comment">% [Image,err] = initializeImage(filename);</span>0004 <span class="comment">% Initializes an Image structure given an image file name.</span>0005 <span class="comment">% The file name is assumed to be relative to IMG_DIR.</span>0006 <span class="comment">% If there is an error in reading the file, it is returned</span>0007 <span class="comment">% in err.</span>0008 <span class="comment">%</span>0009 <span class="comment">% Image = initializeImage(imgData);</span>0010 <span class="comment">% Initialize an Image structure with the image</span>0011 <span class="comment">% content instead of the file name.</span>0012 <span class="comment">%</span>0013 <span class="comment">% [Image,err] = initializeImage(filename,imgData);</span>0014 <span class="comment">% Initialize an Image structure with both the image</span>0015 <span class="comment">% content and the file name.</span>0016 <span class="comment">%</span>0017 <span class="comment">% [Image,err] = initializeImage(...,type);</span>0018 <span class="comment">% Gives Image the text label type. Default is 'unknown'.</span>0019 <span class="comment">%</span>0020 <span class="comment">% The Image structure has the following members:</span>0021 <span class="comment">% filename - the file name relative to IMG_DIR</span>0022 <span class="comment">% data - the actual content of the image</span>0023 <span class="comment">% Each image structure has to contain the filename or the data</span>0024 <span class="comment">% field. It can have both.</span>0025 <span class="comment">% type - some text label</span>0026 <span class="comment">% size - the size of the image</span>0027 <span class="comment">% dims - the number of dimensions of the image (2 or 3)</span>0028 <span class="comment">% date - the time and date this structure was created</span>0029 <span class="comment">%</span>0030 <span class="comment">% See also dataStructures.</span>0031 0032 <span class="comment">% This file is part of the SaliencyToolbox - Copyright (C) 2006-2007</span>0033 <span class="comment">% by Dirk B. Walther and the California Institute of Technology.</span>0034 <span class="comment">% See the enclosed LICENSE.TXT document for the license agreement.</span>0035 <span class="comment">% More information about this project is available at:</span>0036 <span class="comment">% http://www.saliencytoolbox.net</span>0037 0038 <a name="_sub0" href="#_subfunctions" class="code">function [Img,err] = initializeImage(varargin);</a>0039 0040 <a href="declareGlobal.html" class="code" title="">declareGlobal</a>;0041 err = [];0042 0043 <span class="keyword">if</span> (nargin < 1)0044 <a href="fatal.html" class="code" title="function fatal(message)">fatal</a>(<span class="string">'Must have at least one argument!'</span>);0045 <span class="keyword">elseif</span> (nargin < 2)0046 <span class="keyword">switch</span> class(varargin{1})0047 <span class="keyword">case</span> <span class="string">'char'</span>0048 Img.filename = varargin{1};0049 Img.data = NaN;0050 Img.type = <span class="string">'unknown'</span>;0051 <span class="keyword">case</span> {<span class="string">'uint8'</span>,<span class="string">'double'</span>}0052 Img.filename = NaN;0053 Img.data = varargin{1};0054 Img.type = <span class="string">'unknown'</span>;0055 <span class="keyword">otherwise</span>0056 <a href="fatal.html" class="code" title="function fatal(message)">fatal</a>([<span class="string">'Don''t know how to handle data of class'</span> class(varargin{1})]);0057 <span class="keyword">end</span>0058 <span class="keyword">elseif</span> (nargin < 3)0059 <span class="keyword">switch</span> class(varargin{1})0060 <span class="keyword">case</span> <span class="string">'char'</span>0061 Img.filename = varargin{1};0062 <span class="keyword">switch</span> class(varargin{2})0063 <span class="keyword">case</span> <span class="string">'char'</span>0064 Img.data = NaN;0065 Img.type = varargin{2};0066 <span class="keyword">case</span> {<span class="string">'uint8'</span>,<span class="string">'double'</span>}0067 Img.data = varargin{2};0068 Img.type = <span class="string">'unknown'</span>;0069 <span class="keyword">otherwise</span>0070 <span class="keyword">end</span>0071 0072 <span class="keyword">case</span> {<span class="string">'uint8'</span>,<span class="string">'double'</span>}0073 Img.filename = NaN;0074 Img.data = varargin{1};0075 Img.type = varargin{2};0076 0077 <span class="keyword">otherwise</span>0078 <a href="fatal.html" class="code" title="function fatal(message)">fatal</a>([<span class="string">'Don''t know how to handle data of class'</span> class(varargin{1})]);0079 <span class="keyword">end</span>0080 <span class="keyword">else</span>0081 Img.filename = varargin{1};0082 Img.data = varargin{2};0083 Img.type = varargin{3};0084 <span class="keyword">end</span>0085 0086 <span class="keyword">if</span> (isnan(Img.data))0087 <span class="keyword">try</span>0088 im = imread([IMG_DIR Img.filename]);0089 <span class="keyword">catch</span>0090 Img = [];0091 err = lasterror;0092 <span class="keyword">if</span> (nargout < 2)0093 rethrow(err);0094 <span class="keyword">end</span>0095 <span class="keyword">return</span>;0096 <span class="keyword">end</span>0097 Img.data = im;0098 Img.size = size(im);0099 <span class="keyword">else</span>0100 Img.size = size(Img.data);0101 <span class="keyword">end</span>0102 0103 Img.dims = length(Img.size);0104 Img.date = <a href="timeString.html" class="code" title="function s = timeString()">timeString</a>;</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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