thickeningthickeningThickeningthickeningThickeningThickening (Operator)

Name

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

Signature

thickening(Region, StructElement1, StructElement2 : RegionThick : Row, Column, Iterations : )

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

For the choice of the structuring elements StructElement1StructElement1StructElement1StructElement1StructElement1structElement1 and StructElement2StructElement2StructElement2StructElement2StructElement2structElement2, as well as for RowRowRowRowRowrow and ColumnColumnColumnColumnColumncolumn, the same restrictions described under hit_or_misshit_or_missHitOrMisshit_or_missHitOrMissHitOrMiss apply.

The structuring elements (StructElement1StructElement1StructElement1StructElement1StructElement1structElement1 and StructElement2StructElement2StructElement2StructElement2StructElement2structElement2) can be generated by calling golay_elementsgolay_elementsGolayElementsgolay_elementsGolayElementsGolayElements, for example.

Attention

If the reference point is contained in StructElement1StructElement1StructElement1StructElement1StructElement1structElement1 the input region remains unchanged.

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

RegionRegionRegionRegionRegionregion (input_object) region(-array) → object

Regions to be processed.

StructElement1StructElement1StructElement1StructElement1StructElement1structElement1 (input_object) region → object

Structuring element for the foreground.

StructElement2StructElement2StructElement2StructElement2StructElement2structElement2 (input_object) region → object

Structuring element for the background.

RegionThickRegionThickRegionThickRegionThickRegionThickregionThick (output_object) region(-array) → object

Result of the thickening operator.

RowRowRowRowRowrow (input_control) point.y → (integer)

Row coordinate of the reference point.

Default value: 16

Suggested values: 0, 2, 4, 8, 16, 32, 128

Typical range of values: 0 ≤ Row Row Row Row Row row ≤ 511 (lin)

Minimum increment: 1

Recommended increment: 1

ColumnColumnColumnColumnColumncolumn (input_control) point.x → (integer)

Column coordinate of the reference point.

Default value: 16

Suggested values: 0, 2, 4, 8, 16, 32, 128

Typical range of values: 0 ≤ Column Column Column Column Column column ≤ 511 (lin)

Minimum increment: 1

Recommended increment: 1

IterationsIterationsIterationsIterationsIterationsiterations (input_control) integer → (integer)

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, 70, 100, 200, 400

Typical range of values: 1 ≤ Iterations Iterations Iterations Iterations Iterations 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:

      O(Iterations * sqrt(F) * (sqrt(F1) + sqrt(F2))) .

Result

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