MultiConvolveChannel.C

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00001 /*!@file Channels/MultiConvolveChannel.C */
00002 
00003 // //////////////////////////////////////////////////////////////////// //
00004 // The iLab Neuromorphic Vision C++ Toolkit - Copyright (C) 2000-2005   //
00005 // by the University of Southern California (USC) and the iLab at USC.  //
00006 // See http://iLab.usc.edu for information about this project.          //
00007 // //////////////////////////////////////////////////////////////////// //
00008 // Major portions of the iLab Neuromorphic Vision Toolkit are protected //
00009 // under the U.S. patent ``Computation of Intrinsic Perceptual Saliency //
00010 // in Visual Environments, and Applications'' by Christof Koch and      //
00011 // Laurent Itti, California Institute of Technology, 2001 (patent       //
00012 // pending; application number 09/912,225 filed July 23, 2001; see      //
00013 // http://pair.uspto.gov/cgi-bin/final/home.pl for current status).     //
00014 // //////////////////////////////////////////////////////////////////// //
00015 // This file is part of the iLab Neuromorphic Vision C++ Toolkit.       //
00016 //                                                                      //
00017 // The iLab Neuromorphic Vision C++ Toolkit is free software; you can   //
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00026 //                                                                      //
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00030 // Boston, MA 02111-1307 USA.                                           //
00031 // //////////////////////////////////////////////////////////////////// //
00032 //
00033 // Primary maintainer for this file:
00034 // $HeadURL: svn://isvn.usc.edu/software/invt/trunk/saliency/src/Channels/MultiConvolveChannel.C $
00035 // $Id: MultiConvolveChannel.C 9308 2008-02-22 19:04:41Z rjpeters $
00036 //
00037 
00038 #ifndef MULTICONVOLVECHANNEL_C_DEFINED
00039 #define MULTICONVOLVECHANNEL_C_DEFINED
00040 
00041 #include "Channels/MultiConvolveChannel.H"
00042 
00043 #include "Channels/ConvolveChannel.H"
00044 #include "Image/ColorOps.H"
00045 #include "Util/sformat.H"
00046 
00047 // ######################################################################
00048 // MultiConvolveChannel member definitions:
00049 // ######################################################################
00050 MultiConvolveChannel::MultiConvolveChannel(OptionManager& mgr) :
00051   ComplexChannel(mgr, "MultiConvolve", "multiconv", CONVOLVE),
00052   itsFilterFname("MultiConvolveChannelFilterFname", this, ""),
00053   itsLumThresh("MultiConvolveChannelLuminanceThreshold", this, 25.5F)
00054 {
00055   // since we only support 4 subchannels, let's build and name them,
00056   // though we don't know what their filters are yet; we'll assign a
00057   // filter to them in start1():
00058   for (int n = 0; n < 4; n ++)
00059     {
00060       nub::soft_ref<ConvolveChannel> cc(new ConvolveChannel(getManager()));
00061 
00062       // let's change our subchan's name:
00063       cc->setDescriptiveName(sformat("Convolve%d", n));
00064       cc->setTagName(sformat("conv%d", n));
00065 
00066       // add cc as one of our subchannels:
00067       addSubChan(cc);
00068     }
00069 }
00070 
00071 // ######################################################################
00072 MultiConvolveChannel::~MultiConvolveChannel()
00073 { }
00074 
00075 // ######################################################################
00076 void MultiConvolveChannel::start1()
00077 {
00078   // let's configure our subchannels by reading their kernel from
00079   // text file:
00080   const char *fname = itsFilterFname.getVal().c_str();
00081   FILE *f = fopen(fname, "r");
00082   if (f == NULL) LFATAL("Cannot open %s", fname);
00083 
00084   int w, h, d;
00085   if (fscanf(f, "%d %d %d\n", &w, &h, &d) != 3)
00086     LFATAL("Bogus first line in %s", fname);
00087 
00088   if (d != 4) LFATAL("Only 4 subchannels are supported");
00089 
00090   LINFO("Building %dx%dx%d kernel from '%s'", w, h, d, fname);
00091   for (int n = 0; n < d; n ++)
00092     {
00093       Image<float> ker(w, h, NO_INIT);
00094       for (int j = 0; j < h; j ++)
00095         for (int i = 0; i < w; i ++) {
00096           float coeff;
00097           if (fscanf(f, "%f\n", &coeff) != 1)
00098             LFATAL("Bogus coeff in %s at (%d, %d)", fname, i, j);
00099           ker.setVal(i, j, coeff);
00100         }
00101 
00102       // ok, let's assign this filter to one of our subchannels:
00103       (dynCast<ConvolveChannel>(subChan(n)))->setFilter(ker, CONV_BOUNDARY_ZERO);
00104     }
00105   fclose(f);
00106 }
00107 
00108 // ######################################################################
00109 void MultiConvolveChannel::doInput(const InputFrame& inframe)
00110 {
00111   ASSERT(inframe.colorFloat().initialized());
00112 
00113   Image<float> r, g, b, y;
00114   getRGBY(inframe.colorFloat(), r, g, b, y, itsLumThresh.getVal());
00115 
00116   ASSERT(numChans() == 4); // only 4 subchannels currently supported
00117   subChan(0)->input(InputFrame::fromGrayFloat(&r, inframe.time(), &inframe.clipMask(), inframe.pyrCache()));
00118   subChan(1)->input(InputFrame::fromGrayFloat(&g, inframe.time(), &inframe.clipMask(), inframe.pyrCache()));
00119   subChan(2)->input(InputFrame::fromGrayFloat(&b, inframe.time(), &inframe.clipMask(), inframe.pyrCache()));
00120   subChan(3)->input(InputFrame::fromGrayFloat(&y, inframe.time(), &inframe.clipMask(), inframe.pyrCache()));
00121 }
00122 
00123 // ######################################################################
00124 /* So things look consistent in everyone's emacs... */
00125 /* Local Variables: */
00126 /* indent-tabs-mode: nil */
00127 /* End: */
00128 
00129 #endif // MULTICONVOLVECHANNEL_C_DEFINED
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