remove_noise_regionremove_noise_regionRemoveNoiseRegionRemoveNoiseRegionremove_noise_region (Operator)

Name

remove_noise_regionremove_noise_regionRemoveNoiseRegionRemoveNoiseRegionremove_noise_region — Remove noise from a region.

Signature

Description

remove_noise_regionremove_noise_regionRemoveNoiseRegionRemoveNoiseRegionremove_noise_region removes noise from a region. Depending on TypeTypeTypetypetype one of the following structuring elements will be used:

'n_4'"n_4""n_4""n_4""n_4"

A structuring element consisting of the four 4-neighbors of a point is being used: .X. X.X .X.

'n_8'"n_8""n_8""n_8""n_8"

A structuring element consisting of the four 8-neighbors of a point is being used: X.X ... X.X

'n_48'"n_48""n_48""n_48""n_48"

A structuring element consisting of the four 4-neighbors and the four 8-neighbors of a point is being used: XXX X.X XXX

A dilation with this structuring element is performed and the intersection of the result and the input region is calculated. Thus, all pixels having no according neighbors are removed.

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

Complexity

Let F be the area of the input region. Then the runtime complexity is

Result

remove_noise_regionremove_noise_regionRemoveNoiseRegionRemoveNoiseRegionremove_noise_region returns 2 ( H_MSG_TRUE) if all parameters are correct. The behavior in case of empty input (no regions given) can be set via set_system('no_object_result',<Result>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)set_system("no_object_result",<Result>). If necessary, an exception is raised.

Possible Predecessors

connectionconnectionConnectionConnectionconnection, regiongrowingregiongrowingRegiongrowingRegiongrowingregiongrowing, pouringpouringPouringPouringpouring, class_ndim_normclass_ndim_normClassNdimNormClassNdimNormclass_ndim_norm

Possible Successors

select_shapeselect_shapeSelectShapeSelectShapeselect_shape

See also

dilation1dilation1Dilation1Dilation1dilation1, intersectionintersectionIntersectionIntersectionintersection, gen_region_pointsgen_region_pointsGenRegionPointsGenRegionPointsgen_region_points

Module

Foundation