9.57. ITK Morphological Watershed Image Filter
Watershed segmentation implementation with morphological operators.
Group (Subgroup)
ITKWatersheds (Watersheds)
Description
Watershed pixel are labeled 0. TOutputImage should be an integer type. Labels of output image are in no particular order. You can reorder the labels such that object labels are consecutive and sorted based on object size by passing the output of this filter to a RelabelComponentImageFilter .
The morphological watershed transform algorithm is described in Chapter 9.2 of Pierre Soille’s book “Morphological Image Analysis: Principles and Applications”, Second Edition, Springer, 2003.
This code was contributed in the Insight Journal paper: “The watershed transform in ITK - discussion and new developments” by Beare R., Lehmann G. https://www.insight-journal.org/browse/publication/92
Input Parameter(s)
Parameter Name |
Parameter Type |
Parameter Notes |
Description |
|---|---|---|---|
Level |
Scalar Value |
Float64 |
Set the ‘level’ variable to the filter |
MarkWatershedLine |
Bool |
Set/Get whether the watershed pixel must be marked or not. Default is true. Set it to false do not only avoid writing watershed pixels, it also decrease algorithm complexity. |
|
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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