Connected Threshold

Class: NodeImageConnectedThreshold

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Finds voxels that are connected to a seed voxel and lie within a range of values. Two voxels are connected if they share a face, or alternatively an edge or a vertex. A voxel has 6 neighbors with which it shares a face, and 26 neighbors with which it shares a face, an edge or a vertex.

Example Workflows

Connected threshold

Inputs

Image

The image you wish to apply the threshold to.

Type: Image4DFloat, Required, Single

Outputs

Out

The resulting binary mask.

Type: Image4DBool

Settings

Connected Threshold

Connectivity Selection

Sets whether the connected components are defined strictly by face connectivity or by face+edge+vertex connectivity.

Values: Full, Face

Seed

Seed I Integer

X index of the seed voxel.

Seed J Integer

Y index of the seed voxel.

Seed K Integer

Z index of the seed voxel.

Threshold

Lower Threshold Number

Lower threshold value.

Upper Threshold Number

Upper threshold value.

References

  1. “The Insight Segmentation and Registration Toolkit” www.itk.org