Operator Reference

HALCON Operator Reference / Regions / Creation
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gen_region_polygonT_gen_region_polygonGenRegionPolygonGenRegionPolygongen_region_polygon (Operator)

gen_region_polygonT_gen_region_polygonGenRegionPolygonGenRegionPolygongen_region_polygon — Store a polygon as a region.

Signature

gen_region_polygon( : Region : Rows, Columns : )

Herror T_gen_region_polygon(Hobject* Region, const Htuple Rows, const Htuple Columns)

void GenRegionPolygon(HObject* Region, const HTuple& Rows, const HTuple& Columns)

void HRegion::GenRegionPolygon(const HTuple& Rows, const HTuple& Columns)

static void HOperatorSet.GenRegionPolygon(out HObject region, HTuple rows, HTuple columns)

void HRegion.GenRegionPolygon(HTuple rows, HTuple columns)

def gen_region_polygon(rows: Sequence[int], columns: Sequence[int]) -> HObject

Description

The operator gen_region_polygongen_region_polygonGenRegionPolygonGenRegionPolygongen_region_polygon creates a region from a polygon row described by a series of line and column coordinates. The created region consists of the pixels of the routes defined thereby, wherein it is linearly interpolated between the base points.

Attention

The region is not automatically closed and not filled.

Execution Information

  • Multithreading type: reentrant (runs in parallel with non-exclusive operators).
  • Multithreading scope: global (may be called from any thread).
  • Automatically parallelized on internal data level.

Parameters

RegionRegionRegionregionregion (output_object)  region → objectHRegionHObjectHObjectHobject *

Created region.

RowsRowsRowsrowsrows (input_control)  polygon.y-array → HTupleSequence[int]HTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Line indices of the base points of the region contour.

Default: 100

Suggested values: 0, 10, 30, 50, 100, 200, 300, 500

Value range: Rows Rows Rows rows rows (lin)

Minimum increment: 1

Recommended increment: 1

ColumnsColumnsColumnscolumnscolumns (input_control)  polygon.x-array → HTupleSequence[int]HTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Column indices of the base points of the region contour.

Number of elements: Columns == Rows

Default: 100

Suggested values: 0, 10, 30, 50, 100, 200, 300, 500

Value range: Columns Columns Columns columns columns (lin)

Minimum increment: 1

Recommended increment: 1

Example (HDevelop)

* Polygon-approximation
get_region_polygon(Region,7,Row,Column)
* store it as a region
gen_region_polygon(Pol,Row,Column)
* fill up the hole
fill_up(Pol,Filled)

Example (C)

/* Polygon-approximation */
T_get_region_polygon(Region,7,&Row,&Column);
/* store it as a region */
T_gen_region_polygon(&Pol,Row,Column);
destroy_tuple(Row);
destroy_tuple(Column);
/* fill up the hole */
fill_up(Pol,&Filled);

Example (HDevelop)

* Polygon-approximation
get_region_polygon(Region,7,Row,Column)
* store it as a region
gen_region_polygon(Pol,Row,Column)
* fill up the hole
fill_up(Pol,Filled)

Example (HDevelop)

* Polygon-approximation
get_region_polygon(Region,7,Row,Column)
* store it as a region
gen_region_polygon(Pol,Row,Column)
* fill up the hole
fill_up(Pol,Filled)

Result

If the base points are correct the operator gen_region_polygongen_region_polygonGenRegionPolygonGenRegionPolygongen_region_polygon returns the value 2 ( H_MSG_TRUE) . Otherwise an exception is raised. The clipping according to the current image format is set via the operator set_system('clip_region',<'true'/'false'>)set_system("clip_region",<"true"/"false">)SetSystem("clip_region",<"true"/"false">)SetSystem("clip_region",<"true"/"false">)set_system("clip_region",<"true"/"false">). If an empty region is created (by the clipping or by an empty input) the operator set_system('store_empty_region',<'true'/'false'>)set_system("store_empty_region",<"true"/"false">)SetSystem("store_empty_region",<"true"/"false">)SetSystem("store_empty_region",<"true"/"false">)set_system("store_empty_region",<"true"/"false">) determines whether the region is returned or an empty object tuple.

Possible Predecessors

get_region_polygonget_region_polygonGetRegionPolygonGetRegionPolygonget_region_polygon, draw_polygondraw_polygonDrawPolygonDrawPolygondraw_polygon

Alternatives

gen_region_polygon_filledgen_region_polygon_filledGenRegionPolygonFilledGenRegionPolygonFilledgen_region_polygon_filled, gen_region_pointsgen_region_pointsGenRegionPointsGenRegionPointsgen_region_points, gen_region_runsgen_region_runsGenRegionRunsGenRegionRunsgen_region_runs

See also

fill_upfill_upFillUpFillUpfill_up, reduce_domainreduce_domainReduceDomainReduceDomainreduce_domain, get_region_polygonget_region_polygonGetRegionPolygonGetRegionPolygonget_region_polygon, draw_polygondraw_polygonDrawPolygonDrawPolygondraw_polygon

Module

Foundation

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