cylindricality¶

Syntax: cylindricality(image, derivative sigma, smoothing sigma)

Estimates likelihood of structures being cylinders, based on eigenvalues of the local structure tensor. The input image is replaced with the cylindricality values.

This command can be used in the distributed processing mode. Use distribute command to change processing mode from local to distributed.

Arguments¶

image [input & output]¶

Data type: float32 image

Image to process.

derivative sigma [input]¶

Data type: real

Default value: 1

Scale parameter. Set to the preferred scale of edges that define the cylinders. Derivatives required in the stucture tensor are calculated using convolutions with derivative of a Gaussian function, and this parameter defines the standard deviation of the Gaussian.

smoothing sigma [input]¶

Data type: real

Default value: 1

The structure tensor is smoothed by convolution with a Gaussian. This parameter defines the standard deviation of the smoothing Gaussian.