.. _pathlength:

pathlength
**********


**Syntax:** :code:`pathlength(input image, output image)`

Replaces value of each pixel by the length of the longest constrained path that goes through that pixel. Works only with binary input images. NOTE: This command creates temporary files to the current directory. NOTE: This command is highly work-in-progress.

This command cannot be used in the distributed processing mode. If you need it, please contact the authors.

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:** float32 image

Output image.