contrib/oxl/osl/osl_easy_canny.cxx

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// This is oxl/osl/osl_easy_canny.cxx
#ifdef VCL_NEEDS_PRAGMA_INTERFACE
#pragma implementation
#endif
//:
// \file
// \author fsm

#include "osl_easy_canny.h"

#include <vcl_cassert.h>
#include <vcl_iostream.h>

#include <osl/osl_topology.h>

#include <osl/osl_canny_ox_params.h>
#include <osl/osl_canny_ox.h>

#include <osl/osl_canny_rothwell_params.h>
#include <osl/osl_canny_rothwell.h>

#include <osl/osl_edge_detector_params.h>
#include <osl/osl_edge_detector.h>

void osl_easy_canny(int which_canny,
                    vil1_image const &image,
                    vcl_list<osl_edge*> *edges,
                    double sigma)
{
  assert(edges!=0);

  switch (which_canny) {
  case 0: {
    osl_canny_ox_params params;
    if (sigma)
      params.sigma = (float)sigma;
    osl_canny_ox filter(params);
    filter.detect_edges(image, edges);
  } break;

  case 1: {
    osl_canny_rothwell_params params;
    if (sigma)
      params.sigma = (float)sigma;
    osl_canny_rothwell filter(params);
    filter.detect_edges(image, edges);
  } break;

  case 2: {
    osl_edge_detector_params params;
    if (sigma)
      params.sigma_ = (float)sigma;
    osl_edge_detector filter(params);
    filter.detect_edges(image, edges);
  } break;

  default:
    vcl_cerr << __FILE__ ": unrecognised which_canny=" << which_canny << vcl_endl;
    break;
  }
}