How to calculate length of 3D curves/lines

measure
Tags: #<Tag:0x00007fa30a2869f0>

#1

Hi,
I am trying to calculate the length of non-planar curves/lines. I uploaded sample images on the cloud. The curves are roughly 1-3 pixel thick. Sample images are available in the link below. Any comment is appreciated.

https://studntnu-my.sharepoint.com/:f:/g/personal/hamidh_ntnu_no/EjdZq7fqSDZEm_qOQ9Oz4tQBNesQtxiIHur9-SV_6Xn7WA?e=eCqflu

Thanks,
Hamid