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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 gfnormrespf2</title> <meta name="keywords" content="gfnormrespf2"> <meta name="description" content="GFNORMRESPF2 2-D filter response using frequency domain filters (REPLACED)."> <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="index.html">gabortb-v0.4.1</a> > gfnormrespf2.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 gabortb-v0.4.1 <img alt=">" border="0" src="../right.png"></a></td></tr></table>--><h1>gfnormrespf2</h1><h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>GFNORMRESPF2 2-D filter response using frequency domain filters (REPLACED).</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 [r]=gfnormrespf2(gf_, s_); </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">GFNORMRESPF2 2-D filter response using frequency domain filters (REPLACED). GFNORMRESPF2 IS REPLACED BY GFRESPF2 AND WILL BE REMOVED IN FUTURE VERSIONS, USE GFRESPF2 INSTEAD. [R] = GFNORMRESPF2(N1, N2, GF,S) calculates the normalized response R of Gabor filter GF for the 2-D signal S. GF should be given in frequency space (use GFCREATEFILTERF2) and S in spatial space (gray level image, etc.) Examples See also <a href="gfcreatefilter2.html" class="code" title="function [g]=gfcreatefilter2(f0,theta,gamma,eta,n,varargin)">GFCREATEFILTER2</a>, <a href="gfrespf2.html" class="code" title="function [r]=gfrespf2(gf_, s_, varargin);">GFRESPF2</a>. References: [1] Kamarainen, J.-K., Kyrki, V., Kalviainen, H., Gabor Features for Invariant Object Recognition, Research report 79, Department of Information Technology, Lappeenranta University of Technology Author(s): Joni Kamarainen <Joni.Kamarainen@lut.fi> Ville Kyrki <Ville.Kyrki@lut.fi> Copyright: The Gabor Features in Signal and Image Processing Toolbox is Copyright (C) 2000 by Joni Kamarainen and Ville Kyrki. $Name: $ $Revision: 1.4 $ $Date: 2003-02-23 16:27:44 $</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)"></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">%GFNORMRESPF2 2-D filter response using frequency domain filters (REPLACED).</span>0002 <span class="comment">%</span>0003 <span class="comment">% GFNORMRESPF2 IS REPLACED BY GFRESPF2 AND WILL BE REMOVED IN FUTURE</span>0004 <span class="comment">% VERSIONS, USE GFRESPF2 INSTEAD.</span>0005 <span class="comment">%</span>0006 <span class="comment">% [R] = GFNORMRESPF2(N1, N2, GF,S) calculates the normalized</span>0007 <span class="comment">% response R of Gabor filter GF for the 2-D signal S. GF should</span>0008 <span class="comment">% be given in frequency space (use GFCREATEFILTERF2) and S in</span>0009 <span class="comment">% spatial space (gray level image, etc.)</span>0010 <span class="comment">%</span>0011 <span class="comment">% Examples</span>0012 <span class="comment">%</span>0013 <span class="comment">% See also GFCREATEFILTER2, GFRESPF2.</span>0014 <span class="comment">%</span>0015 <span class="comment">% References:</span>0016 <span class="comment">% [1] Kamarainen, J.-K., Kyrki, V., Kalviainen, H., Gabor</span>0017 <span class="comment">% Features for Invariant Object Recognition, Research</span>0018 <span class="comment">% report 79, Department of Information Technology,</span>0019 <span class="comment">% Lappeenranta University of Technology</span>0020 <span class="comment">%</span>0021 <span class="comment">% Author(s):</span>0022 <span class="comment">% Joni Kamarainen <Joni.Kamarainen@lut.fi></span>0023 <span class="comment">% Ville Kyrki <Ville.Kyrki@lut.fi></span>0024 <span class="comment">%</span>0025 <span class="comment">% Copyright:</span>0026 <span class="comment">%</span>0027 <span class="comment">% The Gabor Features in Signal and Image Processing Toolbox is</span>0028 <span class="comment">% Copyright (C) 2000 by Joni Kamarainen and Ville Kyrki.</span>0029 <span class="comment">%</span>0030 <span class="comment">%</span>0031 <span class="comment">% $Name: $ $Revision: 1.4 $ $Date: 2003-02-23 16:27:44 $</span>0032 <span class="comment">%</span>0033 <a name="_sub0" href="#_subfunctions" class="code">function [r]=gfnormrespf2(gf_, s_);</a>0034 0035 <span class="comment">% spatial centered signal -> uncentered frequency spectra</span>0036 ffts = fft2(ifftshift(s_));0037 0038 <span class="comment">% response matrix</span>0039 r = fftshift(ifft2(ffts.*gf_));</pre></div><hr><address>Generated on Fri 23-Nov-2007 14:52:42 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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