11.35. ITK Grayscale Grind Peak Image Filter
Removes bright “peaks” from a grayscale image — enclosed bright spots that are not connected to the image border.
Group (Subgroup)
ITKMathematicalMorphology (MathematicalMorphology)
Description
This filter removes peaks in a grayscale image. A peak is a local maximum (a bright spot) that is fully enclosed by darker pixels and not connected to the image border. The filter lowers each peak down to the gray level of the surrounding pixels, smoothing over bright spots while leaving dark features (local minima) untouched. It is the exact dual of ITK Grayscale Fillhole Image Filter.
A useful trick: subtract this filter’s output from the original image (and optionally threshold the difference) to obtain a map of the bright spots that were removed.
Parameter Guidance
Fully Connected — controls neighbor connectivity when deciding whether a region is “enclosed” (face-only versus face + edge + corner). Turn it on for thin, one-pixel-wide structures.
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.
Reference
Pierre Soille, Morphological Image Analysis: Principles and Applications, Second Edition, Springer, 2003 (Chapter 6).
Input Parameter(s)
Parameter Name |
Parameter Type |
Parameter Notes |
Description |
|---|---|---|---|
Fully Connected |
Bool |
Set/Get whether the connected components are defined strictly by face connectivity or by face+edge+vertex connectivity. Default is FullyConnectedOff. For objects that are 1 pixel wide, use FullyConnectedOn. |
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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