M3C2-Coordinate System

Feel free to ask any question here
mlc183
Posts: 7
Joined: Fri Mar 10, 2017 11:05 pm

M3C2-Coordinate System

Postby mlc183 » Wed Sep 13, 2017 10:43 pm

Hello,
Thanks for developing such a useful software and for answering questions!
I am using M3C2 to difference point clouds of a river gravel bar at two different times. My point clouds have a real coordinate system (NAD83 Oregon North International ft). When I import them into CC I allow the program to adjust itself to local coordinates. Then I align the two clouds using the equivalent point pair method. Then I run M3C2. The results of M3C2 shows the change between the two clouds and produces a histogram with values, which I can then see on the color bar next to my model. My questions are:
1) What are the units on the color bar (the units of change that are being reported)?
2) Are those units reflective of the coordinate system even though I allowed the program to transfer to local coordinates?

For example: If the change reported is 0.10. Then is that equivalent to 0.10 ft?

Thank you for your time!

daniel
Site Admin
Posts: 3326
Joined: Wed Oct 13, 2010 7:34 am
Location: Grenoble, France
Contact:

Re: M3C2-Coordinate System

Postby daniel » Thu Sep 14, 2017 5:26 am

Yes, the original units are always preserved. The Global Shift or the registration process don't change them. So it should be feets indeed.
Daniel, CloudCompare admin


Return to “Questions”

Who is online

Users browsing this forum: No registered users and 4 guests