erosion_seq erosion_seq ErosionSeq ErosionSeq erosion_seq (Operator)
Name
erosion_seq erosion_seq ErosionSeq ErosionSeq erosion_seq
Warning
erosion_seq erosion_seq ErosionSeq ErosionSeq erosion_seq
Signature
Description
erosion_seq erosion_seq ErosionSeq ErosionSeq erosion_seq Region Region Region region region GolayElement GolayElement GolayElement golayElement golay_element erosion_golay erosion_golay ErosionGolay ErosionGolay erosion_golay Iterations Iterations Iterations iterations iterations
'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 golay_elements GolayElements GolayElements golay_elements
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
Region Region Region region region region(-array) → object HRegion HObject HObject Hobject
Regions to be eroded.
RegionErosion RegionErosion RegionErosion regionErosion region_erosion region(-array) → object HRegion HObject HObject Hobject *
Eroded regions.
GolayElement GolayElement GolayElement golayElement golay_element string → HTuple str HTuple Htuple (string) (string ) (HString ) (char* )
Structuring element from the Golay alphabet.
Default:
'h'
"h"
"h"
"h"
"h"
List of values:
'c' "c" "c" "c" "c" , 'd' "d" "d" "d" "d" , 'f' "f" "f" "f" "f" , 'h' "h" "h" "h" "h" , 'k' "k" "k" "k" "k" , 'l' "l" "l" "l" "l"
Iterations Iterations Iterations iterations iterations integer → HTuple int HTuple Htuple (integer) (int / long) (Hlong ) (Hlong )
Number of iterations.
Default:
1
Suggested values:
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 17, 20, 30, 40, 50
Value range:
1
≤
Iterations
Iterations
Iterations
iterations
iterations
(lin)
Minimum increment:
1
Recommended increment:
1
Complexity
Let F be the area of an input region. Then the runtime complexity for one
region is:
Result
erosion_seq erosion_seq ErosionSeq ErosionSeq erosion_seq 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>) set_system("no_object_result",<RegionResult>) SetSystem("no_object_result",<RegionResult>) SetSystem("no_object_result",<RegionResult>) set_system("no_object_result",<RegionResult>)
empty region:
set_system('empty_region_result',<RegionResult>) set_system("empty_region_result",<RegionResult>) SetSystem("empty_region_result",<RegionResult>) SetSystem("empty_region_result",<RegionResult>) set_system("empty_region_result",<RegionResult>)
Otherwise, an exception is raised.
Possible Predecessors
threshold threshold Threshold Threshold threshold regiongrowing regiongrowing Regiongrowing Regiongrowing regiongrowing watersheds watersheds Watersheds Watersheds watersheds class_ndim_norm class_ndim_norm ClassNdimNorm ClassNdimNorm class_ndim_norm
Possible Successors
connection connection Connection Connection connection reduce_domain reduce_domain ReduceDomain ReduceDomain reduce_domain select_shape select_shape SelectShape SelectShape select_shape area_center area_center AreaCenter AreaCenter area_center
Alternatives
erosion_golay erosion_golay ErosionGolay ErosionGolay erosion_golay erosion1 erosion1 Erosion1 Erosion1 erosion1 erosion2 erosion2 Erosion2 Erosion2 erosion2
See also
dilation_seq dilation_seq DilationSeq DilationSeq dilation_seq hit_or_miss_seq hit_or_miss_seq HitOrMissSeq HitOrMissSeq hit_or_miss_seq thinning_seq thinning_seq ThinningSeq ThinningSeq thinning_seq
Module
Foundation