thickening_golay ( Region : RegionThick : GolayElement, Rotation : )

Add the result of a hit-or-miss operation to a region (using a Golay structuring element).

thickening_golay performs a thickening of the input regions using morphological operations and structuring elements from the Golay alphabet. The operator first applies a hit-or-miss-transformation to Region (cf.hit_or_miss_golay), and then adds the detected points to the input region. The following structuring elements are available:

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

The rotation number Rotation determines which rotation of the element should be used. The Golay elements, together with all possible rotations, are described with the operator golay_elements.


Attention

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


Parameters

Region (input_object)
region(-array) -> object
Regions to be processed.

RegionThick (output_object)
region(-array) -> object
Result of the thickening operator.

GolayElement (input_control)
string -> string
Structuring element from the Golay alphabet.
Default value: 'h'
List of values: 'l', 'm', 'd', 'c', 'e', 'i', 'f', 'f2', 'h', 'k'

Rotation (input_control)
integer -> integer
Rotation of the Golay element; depending on the element, not all rotations are valid.
Default value: 0
List of values: 0, 2, 4, 6, 8, 10, 12, 14, 1, 3, 5, 7, 9, 11, 13, 15


Complexity

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

       O(6 * sqrt(F)) .


Result

thickening_golay returns TRUE if all parameters are correct. The behavior in case of empty or no input region can be set via:

  a) no region:    set_system(::'no_object_result',<RegionResult>:)
  b) empty region: set_system(::'empty_region_result',<RegionResult>:)
Otherwise, an exception is raised.


Possible Successors

reduce_domain, select_shape, area_center, connection


Alternatives

thickening, thickening_seq


See also

erosion_golay, hit_or_miss_golay



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