erosion_seq — Erode a region sequentially.
erosion_seq is obsolete and is only provided for
reasons of backward compatibility.
erosion_seq(Region : RegionErosion : GolayElement, Iterations : )
erosion_seq computes the sequential erosion of the
input region Region with the selected structuring element
GolayElement from the Golay alphabet. This is done by
executing the operator erosion_golay with all rotations
of the structuring element Iterations times. The
following structuring elements can be selected:
'l', 'd', 'c', 'f', 'h', 'k'.
Only the “foreground elements” (even rotation numbers) are used.
The elements 'i' and 'e' result in unchanged output regions. The
elements 'l', 'm' and 'f2' are identical for the foreground. The
Golay elements, together with all possible rotations, are described
with the operator golay_elements.
Region (input_object) region(-array) → object
Regions to be eroded.
RegionErosion (output_object) region(-array) → object
Eroded regions.
GolayElement (input_control) string → (string)
Structuring element from the Golay alphabet.
Default value: 'h'
List of values: 'c', 'd', 'f', 'h', 'k', 'l'
Iterations (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
Typical range of values: 1
≤
Iterations
(lin)
Minimum increment: 1
Recommended increment: 1
Let F be the area of an input region. Then the runtime complexity for one region is:
erosion_seq returns 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.
threshold,
regiongrowing,
watersheds,
class_ndim_norm
connection,
reduce_domain,
select_shape,
area_center
erosion_golay,
erosion1,
erosion2
dilation_seq,
hit_or_miss_seq,
thinning_seq
Foundation