test_region_pointtest_region_pointtest_region_pointTestRegionPointTestRegionPoint (Operator)

Name

test_region_pointtest_region_pointtest_region_pointTestRegionPointTestRegionPoint — Test if the region consists of the given point.

Signature

Description

test_region_pointtest_region_pointtest_region_pointTestRegionPointTestRegionPoint tests if at least one input region of RegionsRegionsRegionsRegionsregions consists of the test point (RowRowRowRowrow,ColumnColumnColumnColumncolumn). Is this the case, IsInsideIsInsideIsInsideIsInsideisInside is set to TRUE, else to FALSE

Attention

In case of empty input (= no region) and set_system('no_object_result','true')set_system("no_object_result","true")set_system("no_object_result","true")SetSystem("no_object_result","true")SetSystem("no_object_result","true") IsInsideIsInsideIsInsideIsInsideisInside is set to FALSE (no region contains the pixel).

The test pixel is not contained in an empty region (no pixel of the region corresponds to the pixel). If all regions are empty IsInsideIsInsideIsInsideIsInsideisInside is set to FALSE , i.e., an empty region behaves as if it did not exist.

Parallelization

• Multithreading type: reentrant (runs in parallel with non-exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Processed without parallelization.

Parameters

Complexity

If F is the area of one region and N is the number of regions, the runtime complexity is O(ln(sqrt(F)) * N).

Result

The operator test_region_pointtest_region_pointtest_region_pointTestRegionPointTestRegionPoint returns the value 2 (H_MSG_TRUE) if the parameters are correct. The behavior in case of empty input (no input regions available) is set via the operator set_system('no_object_result',<Result>)set_system("no_object_result",<Result>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>). If necessary an exception is raised.

Possible Predecessors

thresholdthresholdthresholdThresholdThreshold, regiongrowingregiongrowingregiongrowingRegiongrowingRegiongrowing, connectionconnectionconnectionConnectionConnection

Alternatives

union1union1union1Union1Union1, intersectionintersectionintersectionIntersectionIntersection, area_centerarea_centerarea_centerAreaCenterAreaCenter

See also

select_region_pointselect_region_pointselect_region_pointSelectRegionPointSelectRegionPoint

Module

Foundation