Operator Reference

HALCON Operator Reference / Regions / Access

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get_region_convexT_get_region_convexGetRegionConvexGetRegionConvexget_region_convex (Operator)

get_region_convexT_get_region_convexGetRegionConvexGetRegionConvexget_region_convex — Access convex hull as contour.

Signature

get_region_convex(Region : : : Rows, Columns)

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

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

void HRegion::GetRegionConvex(HTuple* Rows, HTuple* Columns) const

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

void HRegion.GetRegionConvex(out HTuple rows, out HTuple columns)

def get_region_convex(region: HObject) -> Tuple[Sequence[int], Sequence[int]]

Description

The operator get_region_convexget_region_convexGetRegionConvexGetRegionConvexget_region_convex returns the convex hull of a region as polygon. The polygon is the minimum result of line (RowsRowsRowsrowsrows) and column coordinates (ColumnsColumnsColumnscolumnscolumns) describing the hull of the region. The polygon pixels lie on the region. The polygon starts at the smallest line number; in this line at the pixel with the largest column index. The rotation direction is clockwise. The first pixel of the polygon is identical with the last. The operator get_region_convexget_region_convexGetRegionConvexGetRegionConvexget_region_convex returns the coordinates in the form of tuples. An empty region is passed as empty tuple.

Execution Information

• Multithreading type: reentrant (runs in parallel with non-exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Processed without parallelization.

Parameters

RegionRegionRegionregionregion (input_object)  region → objectHRegionHObjectHObjectHobject

Output region.

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

Line numbers of contour pixels.

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

Column numbers of the contour pixels.

Number of elements: Columns == Rows

Result

The operator get_region_convexget_region_convexGetRegionConvexGetRegionConvexget_region_convex returns the value 2 ( H_MSG_TRUE) .

Possible Predecessors

thresholdthresholdThresholdThresholdthreshold, skeletonskeletonSkeletonSkeletonskeleton, dyn_thresholddyn_thresholdDynThresholdDynThresholddyn_threshold

Possible Successors

disp_polygondisp_polygonDispPolygonDispPolygondisp_polygon

Alternatives

shape_transshape_transShapeTransShapeTransshape_trans

See also

select_objselect_objSelectObjSelectObjselect_obj, get_region_contourget_region_contourGetRegionContourGetRegionContourget_region_contour

Module

Foundation

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ClassesClasses | | Operators