Operator Reference

HALCON Operator Reference / Regions / Features

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diameter_regiondiameter_regionDiameterRegionDiameterRegiondiameter_region (Operator)

diameter_regiondiameter_regionDiameterRegionDiameterRegiondiameter_region — Maximal distance between two boundary points of a region.

Signature

diameter_region(Regions : : : Row1, Column1, Row2, Column2, Diameter)

Herror diameter_region(const Hobject Regions, Hlong* Row1, Hlong* Column1, Hlong* Row2, Hlong* Column2, double* Diameter)

Herror T_diameter_region(const Hobject Regions, Htuple* Row1, Htuple* Column1, Htuple* Row2, Htuple* Column2, Htuple* Diameter)

void DiameterRegion(const HObject& Regions, HTuple* Row1, HTuple* Column1, HTuple* Row2, HTuple* Column2, HTuple* Diameter)

void HRegion::DiameterRegion(HTuple* Row1, HTuple* Column1, HTuple* Row2, HTuple* Column2, HTuple* Diameter) const

void HRegion::DiameterRegion(Hlong* Row1, Hlong* Column1, Hlong* Row2, Hlong* Column2, double* Diameter) const

static void HOperatorSet.DiameterRegion(HObject regions, out HTuple row1, out HTuple column1, out HTuple row2, out HTuple column2, out HTuple diameter)

void HRegion.DiameterRegion(out HTuple row1, out HTuple column1, out HTuple row2, out HTuple column2, out HTuple diameter)

void HRegion.DiameterRegion(out int row1, out int column1, out int row2, out int column2, out double diameter)

def diameter_region(regions: HObject) -> Tuple[Sequence[int], Sequence[int], Sequence[int], Sequence[int], Sequence[float]]

def diameter_region_s(regions: HObject) -> Tuple[int, int, int, int, float]

Description

The operator diameter_regiondiameter_regionDiameterRegionDiameterRegiondiameter_region calculates the maximal distance between two boundary points of a region. The coordinates of these two extremes and the distance between them will be returned.

In the documentation of this chapter (Regions / Features), you can find an image illustrating regions which vary in their diameter.

Attention

If the region is empty, the results of Row1Row1Row1row1row_1, Column1Column1Column1column1column_1, Row2Row2Row2row2row_2 and Column2Column2Column2column2column_2 (all of them = 0) may lead to confusion.

Execution Information

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

Parameters

RegionsRegionsRegionsregionsregions (input_object)  region(-array) → objectHRegionHObjectHObjectHobject

Regions to be examined.

Row1Row1Row1row1row_1 (output_control)  line.begin.y(-array) → HTupleSequence[int]HTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Row index of the first extreme point.

Column1Column1Column1column1column_1 (output_control)  line.begin.x(-array) → HTupleSequence[int]HTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Column index of the first extreme point.

Row2Row2Row2row2row_2 (output_control)  line.end.y(-array) → HTupleSequence[int]HTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Row index of the second extreme point.

Column2Column2Column2column2column_2 (output_control)  line.end.x(-array) → HTupleSequence[int]HTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Column index of the second extreme point.

DiameterDiameterDiameterdiameterdiameter (output_control)  number(-array) → HTupleSequence[float]HTupleHtuple (real) (double) (double) (double)

Distance of the two extreme points.

Complexity

If F is the area of a region, the runtime complexity amounts to O(sqrt(F)) on average.

Result

The operator diameter_regiondiameter_regionDiameterRegionDiameterRegiondiameter_region returns the value 2 ( H_MSG_TRUE) , if the input is not empty. The reaction to empty input (no input regions are available) may be determined with the help of the operator set_system('no_object_result',<Result>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)set_system("no_object_result",<Result>). The reaction concerning an empty region (region is the empty set) will be determined by the operator set_system('empty_region_result',<Result>)set_system("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

thresholdthresholdThresholdThresholdthreshold, regiongrowingregiongrowingRegiongrowingRegiongrowingregiongrowing, connectionconnectionConnectionConnectionconnection, runlength_featuresrunlength_featuresRunlengthFeaturesRunlengthFeaturesrunlength_features

Possible Successors

disp_linedisp_lineDispLineDispLinedisp_line

Alternatives

smallest_rectangle2smallest_rectangle2SmallestRectangle2SmallestRectangle2smallest_rectangle2

Module

Foundation

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ClassesClasses | | Operators