Start » Filter Reference » Region » Region Global Transforms » SplitRegionIntoExactlyNComponents
Module: | FoundationBasic |
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Splits a region into a fixed-size array of regions.
Name | Type | Range | Description | |
---|---|---|---|---|
inRegion | Region | Input region | ||
inComponentCount | Integer | 1 - | ||
inMaxDistance | Integer* | 0 - | ||
inDistanceBalance | Real | -1.0 - 1.0 | Defines how much important the distance between regions in x coordinate is according to distance in y coordinate | |
inMaxJointDiameter | Real* | 0.0 - | ||
inMaxJointWidth | Integer* | 0 - | ||
inMaxJointHeight | Integer* | 0 - | ||
inRemoveBoundaryBlobs | Bool | Flag indicating whether the blobs on border of the input region should be removed or not | ||
outComponents | RegionArray? |
Description
The filter splits the input region into blobs and iteratively joins some of them into bigger components until
only inComponentCount components remain. Only blobs that are distant from each other by at most inMaxDistance
can be joined. The joining order is determined based on modified distance between two blobs, so the closest ones are joined first.
This modified distance between two blobs is computed as follows:
- The shortest segment connecting two blobs is computed.
- The segment is scaled by \[ 0.5 \cdot (1 + inDistanceBalance) \] along the X axis and by \[ 0.5 \cdot (1 - inDistanceBalance) \] along the Y axis.
- Finally the length of the so scaled segment is computed.
Examples
Remarks
This filter is mostly used in Blob Analysis Technique please refer to our Machine Vision Guide - Blob Analysis article.
Complexity Level
This filter is available on Advanced Complexity Level.
Filter Group
This filter is member of SplitRegionIntoComponents filter group.
See Also
- SplitRegionIntoBlobs – Splits a region into an array of regions corresponding to its connected components.
- SplitRegionIntoComponents – Splits a region into an array of regions. Operates by merging blobs in accordance to the inMaxDistance parameter.