distance_rr_min_dildistance_rr_min_dilDistanceRrMinDildistance_rr_min_dilDistanceRrMinDilDistanceRrMinDil (Operator)

Name

distance_rr_min_dildistance_rr_min_dilDistanceRrMinDildistance_rr_min_dilDistanceRrMinDilDistanceRrMinDil — Minimum distance between two regions with the help of dilation.

Signature

distance_rr_min_dil(Regions1, Regions2 : : : MinDistance)

The operator distance_rr_min_dildistance_rr_min_dilDistanceRrMinDildistance_rr_min_dilDistanceRrMinDilDistanceRrMinDil calculates the minimum distance between pairs of regions. If several regions are passed in Regions1Regions1Regions1Regions1Regions1regions1 and Regions2Regions2Regions2Regions2Regions2regions2 the distance between the i-th elements in each case is calculated. It then forms the i-th entry in the output parameter MinDistanceMinDistanceMinDistanceMinDistanceMinDistanceminDistance. The calculation is carried out with the help of dilation with the Golay element 'h'. The result is:

               Number of iterations * 2 - 1.

The mask 'h' has the effect that precisely the maximum metrics are calculated.

Attention

Both parameters must contain the same number of regions. The regions must not be empty.

Parallelization

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

Regions1Regions1Regions1Regions1Regions1regions1 (input_object) region(-array) → object

Regions to be examined.

Regions2Regions2Regions2Regions2Regions2regions2 (input_object) region(-array) → object

Regions to be examined.

MinDistanceMinDistanceMinDistanceMinDistanceMinDistanceminDistance (output_control) integer(-array) → (integer)

Minimum distances of the regions.

Assertion: -1 <= MinDistance

Result

The operator distance_rr_min_dildistance_rr_min_dilDistanceRrMinDildistance_rr_min_dilDistanceRrMinDilDistanceRrMinDil returns the value 2 (H_MSG_TRUE) if the input is not empty. Otherwise an exception is raised.

Possible Predecessors

thresholdthresholdThresholdthresholdThresholdThreshold, regiongrowingregiongrowingRegiongrowingregiongrowingRegiongrowingRegiongrowing, connectionconnectionConnectionconnectionConnectionConnection

Alternatives

distance_rr_mindistance_rr_minDistanceRrMindistance_rr_minDistanceRrMinDistanceRrMin, dilation1dilation1Dilation1dilation1Dilation1Dilation1, intersectionintersectionIntersectionintersectionIntersectionIntersection

Module

Foundation

Operators