HALCON 23.05.0.0 / HALCON Operator Reference / Regions / Features
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select_shape_protoselect_shape_protoSelectShapeProtoSelectShapeProtoselect_shape_proto (Operator)

Name

select_shape_protoselect_shape_protoSelectShapeProtoSelectShapeProtoselect_shape_proto — Choose regions having a certain relation to each other.

Signature

select_shape_proto(Regions, Pattern : SelectedRegions : Feature, Min, Max : )

Herror select_shape_proto(const Hobject Regions, const Hobject Pattern, Hobject* SelectedRegions, const char* Feature, double Min, double Max)

Herror T_select_shape_proto(const Hobject Regions, const Hobject Pattern, Hobject* SelectedRegions, const Htuple Feature, const Htuple Min, const Htuple Max)

void SelectShapeProto(const HObject& Regions, const HObject& Pattern, HObject* SelectedRegions, const HTuple& Feature, const HTuple& Min, const HTuple& Max)

HRegion HRegion::SelectShapeProto(const HRegion& Pattern, const HTuple& Feature, const HTuple& Min, const HTuple& Max) const

HRegion HRegion::SelectShapeProto(const HRegion& Pattern, const HString& Feature, double Min, double Max) const

HRegion HRegion::SelectShapeProto(const HRegion& Pattern, const char* Feature, double Min, double Max) const

HRegion HRegion::SelectShapeProto(const HRegion& Pattern, const wchar_t* Feature, double Min, double Max) const   ( Windows only)

static void HOperatorSet.SelectShapeProto(HObject regions, HObject pattern, out HObject selectedRegions, HTuple feature, HTuple min, HTuple max)

HRegion HRegion.SelectShapeProto(HRegion pattern, HTuple feature, HTuple min, HTuple max)

HRegion HRegion.SelectShapeProto(HRegion pattern, string feature, double min, double max)

def select_shape_proto(regions: HObject, pattern: HObject, feature: MaybeSequence[str], min: Union[int, float], max: Union[int, float]) -> HObject

Description

The operator select_shape_protoselect_shape_protoSelectShapeProtoSelectShapeProtoSelectShapeProtoselect_shape_proto selects regions based on certain relations between the regions. Every region from RegionsRegionsRegionsRegionsregionsregions is compared to the union of regions from PatternPatternPatternPatternpatternpattern. The limits (MinMinMinMinminmin and MaxMaxMaxMaxmaxmax) are specified absolutely or in percent (0..100), depending on the feature. Possible values for FeatureFeatureFeatureFeaturefeaturefeature are:

'distance_dilate'

The minimum distance in the maximum norm from the edge of PatternPatternPatternPatternpatternpattern to the edge of every region from RegionsRegionsRegionsRegionsregionsregions is determined (see distance_rr_min_dildistance_rr_min_dilDistanceRrMinDilDistanceRrMinDilDistanceRrMinDildistance_rr_min_dil).

'distance_contour'

The minimum Euclidean distance from the edge of PatternPatternPatternPatternpatternpattern to the edge of every region from RegionsRegionsRegionsRegionsregionsregions is determined. (see distance_rr_mindistance_rr_minDistanceRrMinDistanceRrMinDistanceRrMindistance_rr_min).

'distance_center'

The Euclidean distance from the center of PatternPatternPatternPatternpatternpattern to the center of every region from RegionsRegionsRegionsRegionsregionsregions is determined.

'covers'

It is examined how well the region PatternPatternPatternPatternpatternpattern fits into the regions from RegionsRegionsRegionsRegionsregionsregions. If there is no shift so that PatternPatternPatternPatternpatternpattern is a subset of RegionsRegionsRegionsRegionsregionsregions the overlap is 0. If PatternPatternPatternPatternpatternpattern corresponds to the region after a corresponding shift the overlap is 100. Otherwise the area of the opening of RegionsRegionsRegionsRegionsregionsregions with PatternPatternPatternPatternpatternpattern is put into relation with the area of RegionsRegionsRegionsRegionsregionsregions (in percent).

'fits'

It is examined whether PatternPatternPatternPatternpatternpattern can be shifted in such a way that it fits in RegionsRegionsRegionsRegionsregionsregions. If this is possible the corresponding region is copied from RegionsRegionsRegionsRegionsregionsregions. The parameters MinMinMinMinminmin and MaxMaxMaxMaxmaxmax are ignored.

'overlaps_abs'

The area of the intersection of PatternPatternPatternPatternpatternpattern and every region in RegionsRegionsRegionsRegionsregionsregions is computed.

'overlaps_rel'

The area of the intersection of PatternPatternPatternPatternpatternpattern and every region in RegionsRegionsRegionsRegionsregionsregions is computed. The relative overlap is the ratio of the area of the intersection and the are of the respective region in RegionsRegionsRegionsRegionsregionsregions (in percent).

Execution Information

Parameters

RegionsRegionsRegionsRegionsregionsregions (input_object)  region(-array) → objectHRegionHObjectHRegionHobject

Regions to be examined.

PatternPatternPatternPatternpatternpattern (input_object)  region(-array) → objectHRegionHObjectHRegionHobject

Region compared to RegionsRegionsRegionsRegionsregionsregions.

SelectedRegionsSelectedRegionsSelectedRegionsSelectedRegionsselectedRegionsselected_regions (output_object)  region(-array) → objectHRegionHObjectHRegionHobject *

Regions fulfilling the condition.

FeatureFeatureFeatureFeaturefeaturefeature (input_control)  string(-array) → HTupleMaybeSequence[str]HTupleHtuple (string) (string) (HString) (char*)

Shape features to be checked.

Default: 'covers' "covers" "covers" "covers" "covers" "covers"

List of values: 'covers'"covers""covers""covers""covers""covers", 'distance_center'"distance_center""distance_center""distance_center""distance_center""distance_center", 'distance_contour'"distance_contour""distance_contour""distance_contour""distance_contour""distance_contour", 'distance_dilate'"distance_dilate""distance_dilate""distance_dilate""distance_dilate""distance_dilate", 'fits'"fits""fits""fits""fits""fits", 'overlaps_abs'"overlaps_abs""overlaps_abs""overlaps_abs""overlaps_abs""overlaps_abs", 'overlaps_rel'"overlaps_rel""overlaps_rel""overlaps_rel""overlaps_rel""overlaps_rel"

MinMinMinMinminmin (input_control)  number → HTupleUnion[int, float]HTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Lower border of feature.

Default: 50.0

Suggested values: 0.0, 1.0, 5.0, 10.0, 20.0, 30.0, 50.0, 60.0, 70.0, 80.0, 90.0, 95.0, 99.0, 100.0, 200.0, 400.0

Value range: 0.0 ≤ Min Min Min Min min min

Minimum increment: 0.001

Recommended increment: 5.0

MaxMaxMaxMaxmaxmax (input_control)  number → HTupleUnion[int, float]HTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Upper border of the feature.

Default: 100.0

Suggested values: 0.0, 10.0, 20.0, 30.0, 50.0, 60.0, 70.0, 80.0, 90.0, 95.0, 99.0, 100.0, 200.0, 300.0, 400.0

Value range: 0.0 ≤ Max Max Max Max max max

Minimum increment: 0.001

Recommended increment: 5.0

Example (C++ (HALCON 5.0-10.0))

#include "HIOStream.h"
#if !defined(USE_IOSTREAM_H)
using namespace std;
#endif
#include "HalconCpp.h"
using namespace Halcon;

int main (int argc, char *argv[])
{
  if (argc < 2)
  {
    cout << "Usage: " << argv[0] << " <radius of circle>" << endl;
    exit (1);
  }

  double   rad = atof (argv[1]);
  HImage   img ("monkey");
  HWindow  w;

  img.Display (w);

  HRegion       circ = HRegion::GenCircle (100, 100, rad);
  HRegionArray  reg  = img.Regiongrowing (3, 3, 5, 0);
  HRegionArray  seg  = reg.SelectShapeProto (circ, "fits", 0, 0);

  w.SetColor  ("red");
  seg.Display (w);
  w.Click ();
  return(0);
}

Example (C)

regiongrowing(Image,&Seg,3,3,5.0,0);
gen_circle(&C,100.0,100.0,MinRadius);
select_shape_proto(Seg,C,"fits",0.0,0.0);

Example (C++ (HALCON 5.0-10.0))

#include "HIOStream.h"
#if !defined(USE_IOSTREAM_H)
using namespace std;
#endif
#include "HalconCpp.h"
using namespace Halcon;

int main (int argc, char *argv[])
{
  if (argc < 2)
  {
    cout << "Usage: " << argv[0] << " <radius of circle>" << endl;
    exit (1);
  }

  double   rad = atof (argv[1]);
  HImage   img ("monkey");
  HWindow  w;

  img.Display (w);

  HRegion       circ = HRegion::GenCircle (100, 100, rad);
  HRegionArray  reg  = img.Regiongrowing (3, 3, 5, 0);
  HRegionArray  seg  = reg.SelectShapeProto (circ, "fits", 0, 0);

  w.SetColor  ("red");
  seg.Display (w);
  w.Click ();
  return(0);
}

Example (C++ (HALCON 5.0-10.0))

#include "HIOStream.h"
#if !defined(USE_IOSTREAM_H)
using namespace std;
#endif
#include "HalconCpp.h"
using namespace Halcon;

int main (int argc, char *argv[])
{
  if (argc < 2)
  {
    cout << "Usage: " << argv[0] << " <radius of circle>" << endl;
    exit (1);
  }

  double   rad = atof (argv[1]);
  HImage   img ("monkey");
  HWindow  w;

  img.Display (w);

  HRegion       circ = HRegion::GenCircle (100, 100, rad);
  HRegionArray  reg  = img.Regiongrowing (3, 3, 5, 0);
  HRegionArray  seg  = reg.SelectShapeProto (circ, "fits", 0, 0);

  w.SetColor  ("red");
  seg.Display (w);
  w.Click ();
  return(0);
}

Example (C++ (HALCON 5.0-10.0))

#include "HIOStream.h"
#if !defined(USE_IOSTREAM_H)
using namespace std;
#endif
#include "HalconCpp.h"
using namespace Halcon;

int main (int argc, char *argv[])
{
  if (argc < 2)
  {
    cout << "Usage: " << argv[0] << " <radius of circle>" << endl;
    exit (1);
  }

  double   rad = atof (argv[1]);
  HImage   img ("monkey");
  HWindow  w;

  img.Display (w);

  HRegion       circ = HRegion::GenCircle (100, 100, rad);
  HRegionArray  reg  = img.Regiongrowing (3, 3, 5, 0);
  HRegionArray  seg  = reg.SelectShapeProto (circ, "fits", 0, 0);

  w.SetColor  ("red");
  seg.Display (w);
  w.Click ();
  return(0);
}

Result

The operator select_shape_protoselect_shape_protoSelectShapeProtoSelectShapeProtoSelectShapeProtoselect_shape_proto returns the value 2 ( H_MSG_TRUE) if the input is not empty. The behavior in case of empty input (no input regions available) is set via the operator set_system('no_object_result',<Result>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)set_system("no_object_result",<Result>). The behavior in case of empty region (the region is the empty set) is set via set_system('empty_region_result',<Result>)set_system("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)set_system("empty_region_result",<Result>). If necessary an exception is raised.

Possible Predecessors

connectionconnectionConnectionConnectionConnectionconnection, draw_regiondraw_regionDrawRegionDrawRegionDrawRegiondraw_region, gen_circlegen_circleGenCircleGenCircleGenCirclegen_circle, gen_rectangle1gen_rectangle1GenRectangle1GenRectangle1GenRectangle1gen_rectangle1, gen_rectangle2gen_rectangle2GenRectangle2GenRectangle2GenRectangle2gen_rectangle2, gen_ellipsegen_ellipseGenEllipseGenEllipseGenEllipsegen_ellipse

Possible Successors

select_grayselect_graySelectGraySelectGraySelectGrayselect_gray, shape_transshape_transShapeTransShapeTransShapeTransshape_trans, reduce_domainreduce_domainReduceDomainReduceDomainReduceDomainreduce_domain, count_objcount_objCountObjCountObjCountObjcount_obj

Alternatives

select_shapeselect_shapeSelectShapeSelectShapeSelectShapeselect_shape

See also

openingopeningOpeningOpeningOpeningopening, erosion1erosion1Erosion1Erosion1Erosion1erosion1, distance_rr_min_dildistance_rr_min_dilDistanceRrMinDilDistanceRrMinDilDistanceRrMinDildistance_rr_min_dil, distance_rr_mindistance_rr_minDistanceRrMinDistanceRrMinDistanceRrMindistance_rr_min

Module

Foundation

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HALCON Operator Reference 23.05.0.0 Copyright © 1996-2023 MVTec Software GmbH