11.39. ITK H Maxima Image Filter
Flattens shallow bright peaks by suppressing local maxima whose height is less than h.
Group (Subgroup)
ITKMathematicalMorphology (MathematicalMorphology)
Description
The H-Maxima transform removes insignificant bright peaks from a grayscale image. Any local maximum that rises less than h above its local background is suppressed — flattened down to an estimate of that background — while larger, genuine peaks are preserved. This smooths over the “high” parts of the noise without blurring real region boundaries or large intensity changes.
Use this filter to clean up speckle and spurious bright spots before segmentation, or as a preconditioning step for peak/maxima detection. Subtracting this filter’s output from the original image yields the prominent peaks themselves (the operation performed by the H Convex filter); the complementary operation for dark features is the H Minima filter.
Parameter Guidance
Height — the height h, in the input image’s intensity units. Maxima that rise less than h above their local background are suppressed; peaks taller than h survive. Larger values flatten more peaks. Default 2.0.
Required Input Sources
Operates on any scalar 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 |
|---|---|---|---|
Height |
Scalar Value |
Float64 |
Set/Get the height that a local maximum must be above the local background (local contrast) in order to survive the processing. Local maxima below this value are replaced with an estimate of the local background. |
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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