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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 checkImageSize</title> <meta name="keywords" content="checkImageSize"> <meta name="description" content="checkImageSize - downsamples too large images after user confirmation."> <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> > checkImageSize.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>checkImageSize</h1><h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>checkImageSize - downsamples too large images after user confirmation.</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 = checkImageSize(img,mode,targetSize) </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"> checkImageSize - downsamples too large images after user confirmation.
img = checkImageSize(img,mode,targetSize)
If any of the dimensions of img is larger than targetSize (one scalar
number), the function opens a dialog box asking the user if it is okay
to downsample the image. If the user confirms, the returned image is
downsampled such that its largest dimension is targetSize. Otherwise,
the original img is returned.
Possible values for mode are:
'GUI' - use a GUI dialog box to get user confirmation.
'Prompt' - ask user on the command prompt.
'None' - no user confirmation, downsample image if necessary.
img - checkImageSize(img,mode)
Uses 800 as the default for targetSize.
See also <a href="dataStructures.html" class="code" title="">dataStructures</a>, <a href="runSaliency.html" class="code" title="function runSaliency(inputImage,varargin)">runSaliency</a>, <a href="guiSaliency.html" class="code" title="function varargout = guiSaliency(varargin)">guiSaliency</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="debugMsg.html" class="code" title="function debugMsg(message,varargin)">debugMsg</a> debugMsg displays a debug message with line number and filename.</li></ul>This function is called by:<ul style="list-style-image:url(../matlabicon.gif)"><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">% checkImageSize - downsamples too large images after user confirmation.</span>0002 <span class="comment">%</span>0003 <span class="comment">% img = checkImageSize(img,mode,targetSize)</span>0004 <span class="comment">% If any of the dimensions of img is larger than targetSize (one scalar</span>0005 <span class="comment">% number), the function opens a dialog box asking the user if it is okay</span>0006 <span class="comment">% to downsample the image. If the user confirms, the returned image is</span>0007 <span class="comment">% downsampled such that its largest dimension is targetSize. Otherwise,</span>0008 <span class="comment">% the original img is returned.</span>0009 <span class="comment">% Possible values for mode are:</span>0010 <span class="comment">% 'GUI' - use a GUI dialog box to get user confirmation.</span>0011 <span class="comment">% 'Prompt' - ask user on the command prompt.</span>0012 <span class="comment">% 'None' - no user confirmation, downsample image if necessary.</span>0013 <span class="comment">%</span>0014 <span class="comment">% img - checkImageSize(img,mode)</span>0015 <span class="comment">% Uses 800 as the default for targetSize.</span>0016 <span class="comment">%</span>0017 <span class="comment">% See also dataStructures, runSaliency, guiSaliency.</span>0018 0019 <span class="comment">% This file is part of the SaliencyToolbox - Copyright (C) 2006-2007</span>0020 <span class="comment">% by Dirk B. Walther and the California Institute of Technology.</span>0021 <span class="comment">% See the enclosed LICENSE.TXT document for the license agreement.</span>0022 <span class="comment">% More information about this project is available at:</span>0023 <span class="comment">% http://www.saliencytoolbox.net</span>0024 0025 <a name="_sub0" href="#_subfunctions" class="code">function img = checkImageSize(img,mode,targetSize)</a>0026 0027 <span class="keyword">if</span> isempty(img)0028 <span class="keyword">return</span>;0029 <span class="keyword">end</span>0030 0031 <span class="keyword">if</span> isempty(img.data)0032 <span class="keyword">return</span>;0033 <span class="keyword">end</span>0034 0035 <span class="keyword">if</span> (nargin < 3)0036 targetSize = 800;0037 <span class="keyword">end</span>0038 0039 oldSize = img.size(1:2);0040 mx = max(oldSize);0041 <span class="keyword">if</span> (mx > targetSize)0042 newSize = round(oldSize/mx * targetSize);0043 question = <span class="string">'Is it okay to downsample the image?'</span>;0044 text = {sprintf(<span class="string">'The image is fairly large (%d x %d pixels).'</span>,oldSize(2),oldSize(1)),<span class="string">''</span>,<span class="keyword">...</span>0045 <span class="string">'For processing in the SaliencyToolbox it is recommended to downsample'</span>,<span class="keyword">...</span>0046 sprintf(<span class="string">'the image to %d x %d pixels.'</span>,newSize(2),newSize(1)),<span class="string">''</span>,<span class="keyword">...</span>0047 question,<span class="string">''</span>};0048 <span class="keyword">switch</span> mode0049 <span class="keyword">case</span> <span class="string">'GUI'</span>0050 reply = questdlg(text,<span class="string">'Downsample image?'</span>,<span class="string">'Yes'</span>,<span class="string">'No'</span>,<span class="string">'Yes'</span>);0051 doit = strcmp(reply,<span class="string">'Yes'</span>);0052 <span class="keyword">case</span> <span class="string">'Prompt'</span>0053 <span class="keyword">for</span> t = 1:length(text)-20054 <span class="keyword">if</span> ~isempty(text{t})0055 fprintf(<span class="string">'%s\n'</span>,text{t});0056 <span class="keyword">end</span>0057 <span class="keyword">end</span>0058 reply = input([question <span class="string">' [y]|n '</span>],<span class="string">'s'</span>);0059 doit = ismember(reply,{<span class="string">''</span>,<span class="string">'y'</span>,<span class="string">'Y'</span>,<span class="string">'yes'</span>,<span class="string">'Yes'</span>});0060 <span class="keyword">case</span> <span class="string">'None'</span>0061 doit = 1;0062 <span class="keyword">otherwise</span>0063 <a href="debugMsg.html" class="code" title="function debugMsg(message,varargin)">debugMsg</a>([<span class="string">'Unknown mode: '</span> mode]);0064 <span class="keyword">end</span>0065 <span class="keyword">if</span> doit0066 img.data = imresize(img.data,newSize);0067 img.size = size(img.data);0068 <span class="keyword">end</span>0069 <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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