text: #include "opencv2/objdetect/objdetect.hpp"
  #include "opencv2/highgui/highgui.hpp"
  
  #include <ctype.h>
  #include <stdio.h>
  
  static void help(void)
  {
      printf("\n This sample demonstrates cascade's convertation \n"
      "Usage:\n"
      "./convert_cascade --size=\"<width>x<height>\"<convertation size> \n"
      "                   input_cascade_path \n"
      "                   output_cascade_filename\n"
      "Example: \n"
      "./convert_cascade --size=640x480 ../../opencv/data/haarcascades/haarcascade_eye.xml ../../opencv/data/haarcascades/test_cascade.xml \n"
      );
  }
  
  int main( int argc, char** argv )
  {
      const char* size_opt = "--size=";
      char comment[1024];
      CvHaarClassifierCascade* cascade = 0;
      CvSize size;
  
      help();
  
      if( argc != 4 || strncmp( argv[1], size_opt, strlen(size_opt) ) != 0 )
      {
          help();
          return -1;
      }
  
      sscanf( argv[1], "--size=%ux%u", &size.width, &size.height );
      cascade = cvLoadHaarClassifierCascade( argv[2], size );
  
      if( !cascade )
      {
          fprintf( stderr, "Input cascade could not be found/opened\n" );
          return -1;
      }
  
      sprintf( comment, "Automatically converted from %s, window size = %dx%d", argv[2], size.width, size.height );
      cvSave( argv[3], cascade, 0, comment, cvAttrList(0,0) );
      return 0;
  }
  
  #ifdef _EiC
  main(1,"facedetect.c");
  #endif
  