Skip to content

thickeningThickeningThickeningthickeningthickening🔗

Short description🔗

thickeningThickeningThickeningthickeningthickening — Add the result of a hit-or-miss operation to a region.

Warning🔗

thickeningThickening is obsolete and is only provided for reasons of backward compatibility.

Signature🔗

thickening( region Region, region StructElement1, region StructElement2, out region RegionThick, point.y Row, point.x Column, integer Iterations )void Thickening( const HObject& Region, const HObject& StructElement1, const HObject& StructElement2, HObject* RegionThick, const HTuple& Row, const HTuple& Column, const HTuple& Iterations )static void HOperatorSet.Thickening( HObject region, HObject structElement1, HObject structElement2, out HObject regionThick, HTuple row, HTuple column, HTuple iterations )def thickening( region: HObject, struct_element_1: HObject, struct_element_2: HObject, row: int, column: int, iterations: int ) -> HObject

Herror thickening( const Hobject Region, const Hobject StructElement1, const Hobject StructElement2, Hobject* RegionThick, const Hlong Row, const Hlong Column, const Hlong Iterations )

Herror T_thickening( const Hobject Region, const Hobject StructElement1, const Hobject StructElement2, Hobject* RegionThick, const Htuple Row, const Htuple Column, const Htuple Iterations )

HRegion HRegion::Thickening( const HRegion& StructElement1, const HRegion& StructElement2, Hlong Row, Hlong Column, Hlong Iterations ) const

HRegion HRegion.Thickening( HRegion structElement1, HRegion structElement2, int row, int column, int iterations )

Description🔗

thickeningThickening performs a thickening of the input regions using morphological operations. The operator first applies a hit-or-miss-transformation to Regionregionregion (cf.
hit_or_missHitOrMiss), and then adds the detected points to the input region. The parameter Iterationsiterationsiterations determines the number of iterations performed.

For the choice of the structuring elements StructElement1structElement1struct_element_1 and StructElement2structElement2struct_element_2, as well as for Rowrowrow and Columncolumncolumn, the same restrictions described under hit_or_missHitOrMiss apply.

The structuring elements (StructElement1structElement1struct_element_1 and StructElement2structElement2struct_element_2) can be generated by calling golay_elementsGolayElements, for example.

Attention🔗

If the reference point is contained in StructElement1structElement1struct_element_1 the input region remains unchanged.

Execution information🔗

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🔗

Regionregionregion (input_object) region(-array) → objectHObjectHRegionHObjectHobject

Regions to be processed.

StructElement1structElement1struct_element_1 (input_object) region → objectHObjectHRegionHObjectHobject

Structuring element for the foreground.

StructElement2structElement2struct_element_2 (input_object) region → objectHObjectHRegionHObjectHobject

Structuring element for the background.

RegionThickregionThickregion_thick (output_object) region(-array) → objectHObjectHRegionHObjectHobject *

Result of the thickening operator.

Rowrowrow (input_control) point.y → (integer)HTuple (Hlong)HTuple (int / long)intHtuple (Hlong)

Row coordinate of the reference point.

Default: 1616
Suggested values: 0, 2, 4, 8, 16, 32, 1280, 2, 4, 8, 16, 32, 128
Value range: 0 ≤ Row ≤ 511 (lin)
Minimum increment: 1
Recommended increment: 1

Columncolumncolumn (input_control) point.x → (integer)HTuple (Hlong)HTuple (int / long)intHtuple (Hlong)

Column coordinate of the reference point.

Default: 1616
Suggested values: 0, 2, 4, 8, 16, 32, 1280, 2, 4, 8, 16, 32, 128
Value range: 0 ≤ Column ≤ 511 (lin)
Minimum increment: 1
Recommended increment: 1

Iterationsiterationsiterations (input_control) integer → (integer)HTuple (Hlong)HTuple (int / long)intHtuple (Hlong)

Number of iterations.

Default: 11
Suggested values: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 17, 20, 30, 40, 50, 70, 100, 200, 4001, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 17, 20, 30, 40, 50, 70, 100, 200, 400
Value range: 1 ≤ Iterations (lin)
Minimum increment: 1
Recommended increment: 1

Complexity🔗

Let \(F\) be the area of an input region, \(F1\) the area of the structuring element 1, and \(F2\) the area of the structuring element 2. Then the runtime complexity for one object is:

\[\begin{eqnarray*} O\left(\textrm{Iterations} \cdot \sqrt{F} \cdot \left(\sqrt{F1} + \sqrt{F2}\right)\right) \enspace . \end{eqnarray*}\]

Result🔗

thickeningThickening 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.

Combinations with other operators🔗

Combinations

Possible predecessors

golay_elementsGolayElements, thresholdThreshold, regiongrowingRegiongrowing, connectionConnection, union1Union1, watershedsWatersheds, class_ndim_normClassNdimNorm, gen_circleGenCircle, gen_ellipseGenEllipse, gen_rectangle1GenRectangle1, gen_rectangle2GenRectangle2, draw_regionDrawRegion, gen_region_pointsGenRegionPoints, gen_struct_elementsGenStructElements, gen_region_polygon_filledGenRegionPolygonFilled

Possible successors

reduce_domainReduceDomain, select_shapeSelectShape, area_centerAreaCenter, connectionConnection

Alternatives

thickening_golayThickeningGolay, thickening_seqThickeningSeq

See also

hit_or_missHitOrMiss

Module🔗

Foundation