ClassesClasses | | Operators

dilation_seqdilation_seqDilationSeqDilationSeq (Operator)

Name

dilation_seqdilation_seqDilationSeqDilationSeq — Dilate a region sequentially.

Warning

dilation_seqdilation_seqDilationSeqDilationSeqDilationSeq is obsolete and is only provided for reasons of backward compatibility.

Signature

dilation_seq(Region : RegionDilation : GolayElement, Iterations : )

Herror dilation_seq(const Hobject Region, Hobject* RegionDilation, const char* GolayElement, const Hlong Iterations)

Herror T_dilation_seq(const Hobject Region, Hobject* RegionDilation, const Htuple GolayElement, const Htuple Iterations)

void DilationSeq(const HObject& Region, HObject* RegionDilation, const HTuple& GolayElement, const HTuple& Iterations)

HRegion HRegion::DilationSeq(const HString& GolayElement, Hlong Iterations) const

HRegion HRegion::DilationSeq(const char* GolayElement, Hlong Iterations) const

static void HOperatorSet.DilationSeq(HObject region, out HObject regionDilation, HTuple golayElement, HTuple iterations)

HRegion HRegion.DilationSeq(string golayElement, int iterations)

Description

dilation_seqdilation_seqDilationSeqDilationSeqDilationSeq computes the sequential dilation of the input region RegionRegionRegionRegionregion with the selected structuring element GolayElementGolayElementGolayElementGolayElementgolayElement from the Golay alphabet. This is done by executing the operator dilation_golaydilation_golayDilationGolayDilationGolayDilationGolay with all rotations of the structuring element IterationsIterationsIterationsIterationsiterations times. The following structuring elements can be selected:

'l', 'd', 'c', 'f', 'h', 'k'.

In order to compute the skeleton of a region, usually the elements 'l' and 'm' are used. Only the “foreground elements” (even rotation numbers) are used. The elements 'i' and 'e' result in unchanged output regions. The elements 'l', 'm' and 'f2' are identical for the foreground. The Golay elements, together with all possible rotations, are described with the operator golay_elementsgolay_elementsGolayElementsGolayElementsGolayElements.

Execution Information

Parameters

RegionRegionRegionRegionregion (input_object)  region(-array) objectHRegionHRegionHobject

Regions to be dilated.

RegionDilationRegionDilationRegionDilationRegionDilationregionDilation (output_object)  region(-array) objectHRegionHRegionHobject *

Dilated regions.

GolayElementGolayElementGolayElementGolayElementgolayElement (input_control)  string HTupleHTupleHtuple (string) (string) (HString) (char*)

Structuring element from the Golay alphabet.

Default value: 'h' "h" "h" "h" "h"

List of values: 'c'"c""c""c""c", 'd'"d""d""d""d", 'f'"f""f""f""f", 'h'"h""h""h""h", 'k'"k""k""k""k", 'l'"l""l""l""l"

IterationsIterationsIterationsIterationsiterations (input_control)  integer HTupleHTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Number of iterations.

Default value: 1

Suggested values: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 17, 20, 30, 40, 50

Typical range of values: 1 ≤ Iterations Iterations Iterations Iterations iterations (lin)

Minimum increment: 1

Recommended increment: 1

Complexity

Let F be the area of an input region. Then the runtime complexity for one region is:

Result

dilation_seqdilation_seqDilationSeqDilationSeqDilationSeq returns 2 (H_MSG_TRUE) if all parameters are correct. The behavior in case of empty or no input region can be set via:

Otherwise, an exception is raised.

Possible Predecessors

thresholdthresholdThresholdThresholdThreshold, regiongrowingregiongrowingRegiongrowingRegiongrowingRegiongrowing, connectionconnectionConnectionConnectionConnection, union1union1Union1Union1Union1, watershedswatershedsWatershedsWatershedsWatersheds, class_ndim_normclass_ndim_normClassNdimNormClassNdimNormClassNdimNorm

Possible Successors

reduce_domainreduce_domainReduceDomainReduceDomainReduceDomain, select_shapeselect_shapeSelectShapeSelectShapeSelectShape, area_centerarea_centerAreaCenterAreaCenterAreaCenter, connectionconnectionConnectionConnectionConnection

Alternatives

dilation1dilation1Dilation1Dilation1Dilation1, dilation2dilation2Dilation2Dilation2Dilation2, dilation_golaydilation_golayDilationGolayDilationGolayDilationGolay

See also

erosion_seqerosion_seqErosionSeqErosionSeqErosionSeq, hit_or_miss_seqhit_or_miss_seqHitOrMissSeqHitOrMissSeqHitOrMissSeq, thinning_seqthinning_seqThinningSeqThinningSeqThinningSeq

Module

Foundation


ClassesClasses | | Operators