hit_or_miss_golayhit_or_miss_golayhit_or_miss_golayHitOrMissGolayHitOrMissGolay (Operator)

Name

hit_or_miss_golayhit_or_miss_golayhit_or_miss_golayHitOrMissGolayHitOrMissGolay — Hit-or-miss operation for regions using the Golay alphabet.

Signature

Description

hit_or_miss_golayhit_or_miss_golayhit_or_miss_golayHitOrMissGolayHitOrMissGolay performs the hit-or-miss-transformation for the input regions RegionRegionRegionRegionregion (using structuring elements from the Golay alphabet). First, an erosion with the foreground of the structuring element GolayElementGolayElementGolayElementGolayElementgolayElement is done on the input region RegionRegionRegionRegionregion. Then an erosion with the background of the structuring element GolayElementGolayElementGolayElementGolayElementgolayElement is performed on the complement of the input region. The intersection of the two resulting regions is the result RegionHitMissRegionHitMissRegionHitMissRegionHitMissregionHitMiss of hit_or_miss_golayhit_or_miss_golayhit_or_miss_golayHitOrMissGolayHitOrMissGolay. The following structuring elements are available:

'l', 'm', 'd', 'c', 'e','i', 'f', 'f2', 'h', 'k'.

The rotation number RotationRotationRotationRotationrotation determines which rotation of the element should be used. The hit-or-miss-transformation selects precisely the points for which the conditions given by the selected Golay element are fulfilled.

Attention

Not all values of RotationRotationRotationRotationrotation are valid for any Golay element.

Parallelization

• 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

Complexity

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

       O(6 * sqrt(F)) .

Result

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

• no region: set_system('no_object_result',<RegionResult>)

• empty region: set_system('empty_region_result',<RegionResult>)

Otherwise, an exception is raised.

Possible Predecessors

thresholdthresholdthresholdThresholdThreshold, regiongrowingregiongrowingregiongrowingRegiongrowingRegiongrowing, connectionconnectionconnectionConnectionConnection, union1union1union1Union1Union1, watershedswatershedswatershedsWatershedsWatersheds, class_ndim_normclass_ndim_normclass_ndim_normClassNdimNormClassNdimNorm

Possible Successors

reduce_domainreduce_domainreduce_domainReduceDomainReduceDomain, select_shapeselect_shapeselect_shapeSelectShapeSelectShape, area_centerarea_centerarea_centerAreaCenterAreaCenter, connectionconnectionconnectionConnectionConnection

Alternatives

hit_or_miss_seqhit_or_miss_seqhit_or_miss_seqHitOrMissSeqHitOrMissSeq, hit_or_misshit_or_misshit_or_missHitOrMissHitOrMiss

See also

erosion_golayerosion_golayerosion_golayErosionGolayErosionGolay, dilation_golaydilation_golaydilation_golayDilationGolayDilationGolay, opening_golayopening_golayopening_golayOpeningGolayOpeningGolay, closing_golayclosing_golayclosing_golayClosingGolayClosingGolay, thinning_golaythinning_golaythinning_golayThinningGolayThinningGolay, thickening_golaythickening_golaythickening_golayThickeningGolayThickeningGolay, golay_elementsgolay_elementsgolay_elementsGolayElementsGolayElements

Module

Foundation