Compute the union of ::bottom_hat and ::top_hat.

::morph_hat computes the union of the regions that are removed by an ::opening operation with the regions that are added by a ::closing operation. Hence this is the union of the results of ::top_hat and ::bottom_hat. The position of StructElement does not influence the result.

Structuring elements (StructElement) can be generated with operators such as ::gen_circle, ::gen_rectangle1, ::gen_rectangle2, ::gen_ellipse, ::draw_region, ::gen_region_polygon, ::gen_region_points, etc.

The individual regions are processed separately.

#include  <iostream.h>
#include  "HalconCpp.h"

main()
{
  cout << "Reproduction of 'dilation_circle ()'" << endl;
  cout << "First = original image " << endl;
  cout << "Red   = after segmentation " << endl;
  cout << "Blue  = after erosion " << endl;

  HByteImage img("monkey");
  HWindow    w;

  HRegion      circ   = HRegion::GenCircle (10, 10, 1.5);
  HRegionArray regs   = (img >= 128).Connection();
  HRegionArray tophat = regs.TopHat (circ);
  HRegionArray bothat = regs.BottomHat (circ);
  HRegionArray unionX = tophat.Union2 (bothat);

                        img.Display (w);      w.Click ();
  w.SetColor ("red");   regs.Display (w);     w.Click ();
  w.SetColor ("blue");  tophat.Display (w);   w.Click ();
  w.SetColor ("green"); bothat.Display (w);   w.Click ();
  w.SetColor ("white"); unionX.Display (w);   w.Click ();

  return(0);
}

::morph_hat returns H_MSG_TRUE if all parameters are correct. The behavior in case of empty or no input region can be set via:

  a) no region:    set_system('no_object_result',<RegionResult>)
  b) empty region: set_system('empty_region_result',<RegionResult>)

::threshold, ::regiongrowing, ::connection, ::union1, ::watersheds, ::class_ndim_norm, ::gen_circle, ::gen_ellipse, ::gen_rectangle1, ::gen_rectangle2, ::draw_region, ::gen_region_points, ::gen_struct_elements, ::gen_region_polygon_filled

::reduce_domain, ::select_shape, ::area_center, ::connection

::top_hat, ::bottom_hat, ::union2

::opening, ::closing

Morphology