11.33. ITK Grayscale Erode Image Filter
Replaces each pixel with the minimum value in its neighborhood — a grayscale erosion that darkens the image and grows dark regions.
Group (Subgroup)
ITKMathematicalMorphology (MathematicalMorphology)
Description
Grayscale erosion replaces each pixel with the minimum value found within the neighborhood defined by the structuring element (the probe shape — ball, box, etc. — swept over the image). The effect is to darken the image, grow dark regions, and shrink bright ones. It is the grayscale counterpart of binary erosion and the dual of ITK Grayscale Dilate Image Filter.
Parameter Guidance
Kernel Radius — the radius of the structuring element, in pixels (one value per axis). Larger radii grow dark regions more.
Kernel Type
The Kernel Type parameter selects the structuring element shape:
Annulus [0]: A ring-shaped structuring element.
Ball [1]: A spherical structuring element (default). Most commonly used for general morphological operations.
Box [2]: A rectangular/cuboid structuring element.
Cross [3]: A cross-shaped structuring element.
Required Input Sources
Operates on any scalar (grayscale) image — typically from Read Image, Read Images [3D Stack], or the output of a prior ITK image filter.
Input Parameter(s)
Parameter Name |
Parameter Type |
Parameter Notes |
Description |
|---|---|---|---|
Kernel Radius |
Vector of UInt32 Values |
Order=X,Y,Z |
The radius of the kernel structuring element. |
Kernel Type |
Choices |
Set the kernel or structuring element used for the morphology. |
Input Cell Data
Parameter Name |
Parameter Type |
Parameter Notes |
Description |
|---|---|---|---|
Image Geometry |
Geometry Selection |
Image |
Select the Image Geometry Group from the DataStructure. |
Input Cell Data |
Array Selection |
Allowed Types: int8, uint8, int16, uint16, int32, uint32, int64, uint64, float32, float64 |
The image data that will be processed by this filter. |
Output Cell Data
Parameter Name |
Parameter Type |
Parameter Notes |
Description |
|---|---|---|---|
Output Cell Data |
DataObjectName |
The result of the processing will be stored in this Data Array inside the same group as the input data. |
Example Pipelines
License & Copyright
Please see the description file distributed with this Plugin
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