/
frangifilter.txt
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/
frangifilter.txt
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.. _frangifilter:
frangifilter
************
**Syntax:** :code:`frangifilter(input image, output image, spatial sigma, output scale, c, gamma, alpha, beta)`
Calculates line-enhancing filter Vo according to Frangi - Multiscale vessel enhancement filtering.
This command can be used in the distributed processing mode. Use :ref:`distribute` command to change processing mode from local to distributed.
Arguments
---------
input image [input]
~~~~~~~~~~~~~~~~~~~
**Data type:** uint8 image, uint16 image, uint32 image, uint64 image, int8 image, int16 image, int32 image, int64 image, float32 image
Input image.
output image [output]
~~~~~~~~~~~~~~~~~~~~~
**Data type:** uint8 image, uint16 image, uint32 image, uint64 image, int8 image, int16 image, int32 image, int64 image, float32 image
Output image.
spatial sigma [input]
~~~~~~~~~~~~~~~~~~~~~
**Data type:** real
Standard deviation of Gaussian kernel, determines scale of structures that are probed.
output scale [input]
~~~~~~~~~~~~~~~~~~~~
**Data type:** real
**Default value:** 0
Output values are scaled by this number. Pass in zero to scale output value 1 to maximum of the data type for integer data types and to 1 for floating point data types.
c [input]
~~~~~~~~~
**Data type:** real
**Default value:** 0.25
Sensitivity of the filter to deviation from background noise. Typical value is quarter of the value of the maximum intensity of the lines.
gamma [input]
~~~~~~~~~~~~~
**Data type:** real
**Default value:** 0
Scale-space scaling exponent. Set to zero to disable scaling.
alpha [input]
~~~~~~~~~~~~~
**Data type:** real
**Default value:** 0.5
Sensitivity of the filter to deviation from plate-like structures.
beta [input]
~~~~~~~~~~~~
**Data type:** real
**Default value:** 0.5
Sensitivity of the filter to deviation from blob-like structures.
See also
--------
:ref:`satofilter`