9.39. ITK H Maxima Image Filter
Suppress local maxima whose height above the baseline is less than h.
Group (Subgroup)
ITKMathematicalMorphology (MathematicalMorphology)
Description
HMaximaImageFilter suppresses local maxima that are less than h intensity units above the (local) background. This has the effect of smoothing over the “high” parts of the noise in the image without smoothing over large changes in intensity (region boundaries). See the HMinimaImageFilter to suppress the local minima whose depth is less than h intensity units below the (local) background.
If the output of HMaximaImageFilter is subtracted from the original image, the significant “peaks” in the image can be identified. This is what the HConvexImageFilter provides.
This filter uses the ReconstructionByDilationImageFilter . It provides its own input as the “mask” input to the geodesic dilation. The “marker” image for the geodesic dilation is the input image minus the height parameter h.
Geodesic morphology and the H-Maxima algorithm is described in Chapter 6 of Pierre Soille’s book “Morphological Image Analysis: Principles and Applications”, Second Edition, Springer, 2003.
The height parameter is set using SetHeight.* ReconstructionByDilationImageFilter , HMinimaImageFilter , HConvexImageFilter
MorphologyImageFilter , GrayscaleDilateImageFilter , GrayscaleFunctionDilateImageFilter , BinaryDilateImageFilter
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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