Start » Filter Reference » Region » Region Morphology » CloseRegion
Module: | FoundationBasic |
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Performs a morphological closing on a region using selected predefined kernel.
Applications
Name | Type | Range | Description | |
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inRegion | Region | Input region | ||
inKernel | KernelShape | Kernel shape (predefined) | ||
inRadiusX | Integer | 0 - | Nearly half of the kernel's width (2*R+1) | |
inRadiusY | Integer* | 0 - | Nearly half of the kernel's height (2*R+1), or same as inRadiusX | |
outRegion | Region | Output region |
Description
The operation performs a morphological closing, which is a tool used for filling gaps in a region. The operation is a convolution of two basic morphological operations:
- Firstly, the input region is dilated using DilateRegion operation.
- Then, the resulting region is eroded using ErodeRegion operation.
During the dilation gaps that are small enough are actually closed, while further erosion assures that the width of region limbs is preserved.
Both of the component operations are conducted using the same inKernel, inRadiusX and inRadiusY parameters.
Hints
- Increase inRadiusX to fill-in bigger gaps in the region.
- Change inKernel to Ellipse to make the filter work equally strongly in each direction (execution will be slower).
Examples
Errors
This filter can throw an exception to report error. Read how to deal with errors in Error Handling.
List of possible exceptions:
Error type | Description |
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DomainError | Unsupported kernel in CloseRegion. |
Complexity Level
This filter is available on Advanced Complexity Level.
Filter Group
This filter is member of CloseRegion filter group.
See Also
- DilateRegion – Performs a morphological dilation on a region using a predefined kernel.
- CloseRegion_AnyKernel – Performs a morphological closing on a region using an arbitrary kernel.
- OpenRegion – Performs a morphological opening on a region using a predefined kernel.