libptouch / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/PTdecode/CImg-1.3.0/examples/use_cimgmatlab.cpp	Mon Aug 03 14:09:20 2009 +0100
     1.3 @@ -0,0 +1,102 @@
     1.4 +/*-----------------------------------------------------------------------
     1.5 +
     1.6 +  File : use_cimgmatlab.cpp
     1.7 +
     1.8 +  Description: Example of use for the CImg plugin 'plugins/cimgmatlab.h'
     1.9 +  which allows to use CImg in order to develop matlab external
    1.10 +  functions (mex functions).
    1.11 +  User should be familiar with Matlab C/C++ mex function concepts,
    1.12 +  as this file is by no way a mex programming tutorial.
    1.13 +
    1.14 +  This simple example implements a mex function that can be called
    1.15 +  as
    1.16 +
    1.17 +  - v = cimgmatlab_cannyderiche(u,s)
    1.18 +  - v = cimgmatlab_cannyderiche(u,sx,sy)
    1.19 +  - v = cimgmatlab_cannyderiche(u,sx,sy,sz)
    1.20 +
    1.21 +  The corresponding m-file is cimgmatlab_cannyderiche.m
    1.22 +
    1.23 +
    1.24 +  Copyright : Francois Lauze - http://www.itu.dk/people/francois
    1.25 +  This software is governed by the Gnu Lesser General Public License
    1.26 +  see http://www.gnu.org/copyleft/lgpl.html
    1.27 +
    1.28 +  The plugin home page is at
    1.29 +  http://www.itu.dk/people/francois/cimgmatlab.html
    1.30 +
    1.31 +  for the compilation: using the mex utility provided with matlab, just
    1.32 +  remember to add the -I flags with paths to CImg.h and/or cimgmatlab.h.
    1.33 +  The default lcc cannot be used, it is a C compiler and not a C++ one!
    1.34 +
    1.35 +--------------------------------------------------------------------------*/
    1.36 +
    1.37 +#include <mex.h>
    1.38 +#define cimg_plugin "plugins/cimgmatlab.h"
    1.39 +#include <CImg.h>
    1.40 +
    1.41 +void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[]) {
    1.42 +  if (nrhs < 2) mexErrMsgTxt("No enough input arguments.");
    1.43 +  if (nrhs > 4) mexErrMsgTxt("Too many input arguments.");
    1.44 +  cimg_library::CImg<> u(prhs[0],true);
    1.45 +  if (nrhs == 2) {
    1.46 +    const float s = (float)mxGetScalar(prhs[1]);
    1.47 +    plhs[0] = u.get_blur(s).toMatlab();
    1.48 +  } else if (nrhs == 3) {
    1.49 +    const float sx = (float)mxGetScalar(prhs[1]);
    1.50 +    const float sy = (float)mxGetScalar(prhs[2]);
    1.51 +    plhs[0] = u.get_blur(sx,sy,0).toMatlab();
    1.52 +  } else if (nrhs == 4) {
    1.53 +    const float sx = (float)mxGetScalar(prhs[1]);
    1.54 +    const float sy = (float)mxGetScalar(prhs[2]);
    1.55 +    const float sz = (float)mxGetScalar(prhs[3]);
    1.56 +    plhs[0] = u.get_blur(sx,sy,sz).toMatlab();
    1.57 +  }
    1.58 +}
    1.59 +
    1.60 +/*------------------------------------------------------------------
    1.61 +
    1.62 +  SPECIAL NOTE :
    1.63 +  -------------
    1.64 +
    1.65 +  How to read a .mat file using plugin 'cimgmatlab.h' ?
    1.66 +  (contribution by Vo Duc Khanh/Denso IT Lab, Tokyo, Japan).
    1.67 +
    1.68 +  #include <mex.h>
    1.69 +  #include <mat.h>
    1.70 +  #include <matrix.h>
    1.71 +
    1.72 +  #define cimg_plugin "cimgmatlab.h"
    1.73 +
    1.74 +  #include "CImg.h"
    1.75 +  #include <iostream>
    1.76 +  #include <string>
    1.77 +
    1.78 +  .........
    1.79 +
    1.80 +  using namespace cimg_library;
    1.81 +  using namespace std;
    1.82 +
    1.83 +  // Load input images (125700 images) from training database 'BmpTrainingDb.mat'
    1.84 +  MATFile *pmat, *pmat_out;
    1.85 +  mxArray *pa, *pa_out;
    1.86 +  const char data_path[256] = ".\\BmpTrainingDb.mat\0";
    1.87 +  const char *var_name;
    1.88 +
    1.89 +  pmat = matOpen(data_path, "r");
    1.90 +  if (pmat == NULL) {
    1.91 +    cout << "Error opening file " << data_path << endl;
    1.92 +    return (1);
    1.93 +  }
    1.94 +
    1.95 +  pa = matGetNextVariable(pmat, &var_name);
    1.96 +  if (pa == NULL){
    1.97 +    cout << "Error reading in file " << data_path << endl;
    1.98 +    return (1);
    1.99 +  }
   1.100 +
   1.101 +  CImg<unsigned char> train_db(pa,false);
   1.102 +  ........
   1.103 +
   1.104 +
   1.105 +  -----------------------------------------------------------------------------*/