Name
erosion2erosion2Erosion2Erosion2 — Erode a region (using a reference point).
Herror erosion2(const Hobject Region, const Hobject StructElement, Hobject* RegionErosion, const Hlong Row, const Hlong Column, const Hlong Iterations)
Herror T_erosion2(const Hobject Region, const Hobject StructElement, Hobject* RegionErosion, const Htuple Row, const Htuple Column, const Htuple Iterations)
erosion2erosion2Erosion2Erosion2Erosion2 erodes the input regions with a structuring
element (StructElementStructElementStructElementStructElementstructElement) having the reference point
(RowRowRowRowrow,ColumnColumnColumnColumncolumn). erosion2erosion2Erosion2Erosion2Erosion2 has a
similar effect as erosion1erosion1Erosion1Erosion1Erosion1, the difference is that
the reference point of the structuring element can be chosen
arbitrarily. The parameter IterationsIterationsIterationsIterationsiterations determines the
number of iterations which are to be performed with the structuring
element. The result of iteration n-1 is used as input for
iteration n.
A maximum region is generated in case of an empty structuring
element.
Structuring elements (StructElementStructElementStructElementStructElementstructElement) can be generated
with operators such as gen_circlegen_circleGenCircleGenCircleGenCircle, gen_rectangle1gen_rectangle1GenRectangle1GenRectangle1GenRectangle1,
gen_rectangle2gen_rectangle2GenRectangle2GenRectangle2GenRectangle2, gen_ellipsegen_ellipseGenEllipseGenEllipseGenEllipse,
draw_regiondraw_regionDrawRegionDrawRegionDrawRegion, gen_region_polygongen_region_polygonGenRegionPolygonGenRegionPolygonGenRegionPolygon,
gen_region_pointsgen_region_pointsGenRegionPointsGenRegionPointsGenRegionPoints, etc.
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Automatically parallelized on tuple level.
Row coordinate of the reference point.
Default value: 0
Typical range of values: 0
≤
Row
Row
Row
Row
row
≤
511 (lin)
Minimum increment: 1
Recommended increment: 1
Column coordinate of the reference point.
Default value: 0
Typical range of values: 0
≤
Column
Column
Column
Column
column
≤
511 (lin)
Minimum increment: 1
Recommended increment: 1
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
Let F1 be the area of the input region, and F2 be the area of
the structuring element. Then the runtime complexity for one region
is:
erosion2erosion2Erosion2Erosion2Erosion2 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.
thresholdthresholdThresholdThresholdThreshold,
regiongrowingregiongrowingRegiongrowingRegiongrowingRegiongrowing,
watershedswatershedsWatershedsWatershedsWatersheds,
class_ndim_normclass_ndim_normClassNdimNormClassNdimNormClassNdimNorm,
gen_circlegen_circleGenCircleGenCircleGenCircle,
gen_ellipsegen_ellipseGenEllipseGenEllipseGenEllipse,
gen_rectangle1gen_rectangle1GenRectangle1GenRectangle1GenRectangle1,
gen_rectangle2gen_rectangle2GenRectangle2GenRectangle2GenRectangle2,
draw_regiondraw_regionDrawRegionDrawRegionDrawRegion,
gen_region_pointsgen_region_pointsGenRegionPointsGenRegionPointsGenRegionPoints,
gen_region_polygon_filledgen_region_polygon_filledGenRegionPolygonFilledGenRegionPolygonFilledGenRegionPolygonFilled
reduce_domainreduce_domainReduceDomainReduceDomainReduceDomain,
select_shapeselect_shapeSelectShapeSelectShapeSelectShape,
area_centerarea_centerAreaCenterAreaCenterAreaCenter,
connectionconnectionConnectionConnectionConnection
minkowski_sub2minkowski_sub2MinkowskiSub2MinkowskiSub2MinkowskiSub2,
minkowski_sub1minkowski_sub1MinkowskiSub1MinkowskiSub1MinkowskiSub1,
erosion1erosion1Erosion1Erosion1Erosion1
transpose_regiontranspose_regionTransposeRegionTransposeRegionTransposeRegion,
gen_circlegen_circleGenCircleGenCircleGenCircle,
gen_rectangle2gen_rectangle2GenRectangle2GenRectangle2GenRectangle2,
gen_region_polygongen_region_polygonGenRegionPolygonGenRegionPolygonGenRegionPolygon
Foundation