Hello there!
I just wanted to share with the community a new free and open-source point cloud comparison and processing tool in Grasshopper we developed, it’s called diffCheck 
, hope it will be usefull to you! 
It’s distributed via the yak package manager so just open the _PackageManager and type
diffCheck
We are starting this as a shared, free open-source project so feel free to follow this guideline to contribute to the project! 
(PS: it’s a python plug-in for Grasshopper 
)
Here’s a couple of info about it:
-
what is it?: With
diffCheck, you can easily compare your scans and 3D models of timber structures or joinery to measure precision and see the differences at a glance, here! -
how it is?:
diffCheckcan also function as a general purpose point cloud processing toolset and we hope that the digital community will use it, see the interest, and contribute to this open-source project we starting! -
who is behind?:
diffCheckis originally developed and now maintained by Andrea Settimi (PhD), Damien Gilliard (PhD) from the Laboratory of Timber Construction (IBOIS, lab head: Prof. Yves Weinand), Eleni Skevaki (PhD) and Dr. Marirena Kladeftira (Post-Doc) from the Laboratory for Creative Computation (CRCL, lab head: Prof. Stefana Parascho) here at Ecole Polytechnique Fédérale de Lausanne (EPFL). -
Where I can use it?:
diffCheckis designed to be user-friendly and can be used either via a Grasshopper plug-in, we provide tutorials and online documentation for each component and its Python API.
→ 
repo: GitHub - diffCheckOrg/diffCheck: diffCheck is a CAD-integrated tool for evaluating digital timber fabrication processes.
→ 
online documentation: DiffCheck: CAD-Scan comparison — DiffCheck documentation
→ 
bug report: Issues · diffCheckOrg/diffCheck · GitHub
→ 
scientific paper: coming soon!
Cloud-cloud comparison on log and square section timber structures.
Study cases on multiple digital fabrication techniques.
In-depth joint’s accuracy analysis.
Automatic Python API and gh components documentation 
.