Search found 45 matches

by jedfrechette
Sat Nov 18, 2023 3:40 pm
Forum: Requests, new functionalities
Topic: pan durint segementation
Replies: 6
Views: 6387

Re: pan durint segementation

Of all the 3D applications I’ve used the UI I like the best is having a modifier that is held down to activate navigation mode (tumble, pan, dolly, zoom, etc). That frees up all the mouse buttons for usage by tools when the modifier isn’t active. ALT is a pretty popular choice for the modifier key, ...
by jedfrechette
Tue Aug 08, 2023 9:55 pm
Forum: Questions
Topic: Turning a very detailed point cloud into a mesh
Replies: 5
Views: 2393

Re: Turning a very detailed point cloud into a mesh

Sounds like it's impossible to use this type of scanner on this type of object and get good normals out of it. I wouldn't say impossible, just challenging ;-) For a mobile scanner like that you would probably also need to consider the scanner's trajectory in order to make sure the orientation of th...
by jedfrechette
Thu Aug 03, 2023 4:27 pm
Forum: Questions
Topic: Turning a very detailed point cloud into a mesh
Replies: 5
Views: 2393

Re: Turning a very detailed point cloud into a mesh

Where did the point cloud come from and how are you generating the normals? Hopefully it's from a tripod scanner and you have it as structured scans, as that's probably your only hope for getting good enough normals for something like this. Like, daniel said this kind of structures is going to be re...
by jedfrechette
Thu Jun 01, 2023 10:05 pm
Forum: Requests, new functionalities
Topic: better color interpolation?
Replies: 3
Views: 4786

Re: better color interpolation?

Do you mean Kriging?

https://en.wikipedia.org/wiki/Kriging

It's been around since the 60s so I'm not sure I'd call it new at this point ;-)
by jedfrechette
Mon Oct 10, 2022 2:59 am
Forum: Requests, new functionalities
Topic: abc colored point format(compatibility with Maya abc Import)
Replies: 3
Views: 1467

Re: abc colored point format(compatibility with Maya abc Import)

It’s not a point cloud specific format, but I’m assuming the OP is referring to the Alembic file format:

https://www.alembic.io/

Source code for the library here:

https://github.com/alembic/alembic
by jedfrechette
Wed Aug 24, 2022 8:05 pm
Forum: Questions
Topic: 4x4 matrix explained
Replies: 1
Views: 745

Re: 4x4 matrix explained

It's not CloudCompare specific but this covers the basics: http://learnwebgl.brown37.net/transformations2/transformations_matrices.html If you don't want to dig in to the math, you can just think of a 4x4 matrix as a convenient way to store a rigid transform (translate, rotate, and scale). That tran...
by jedfrechette
Thu Mar 18, 2021 11:47 pm
Forum: Questions
Topic: Difference between SCENE cloud to cloud registration and CloudCompare's ICP
Replies: 6
Views: 3348

Re: Difference between SCENE cloud to cloud registration and CloudCompare's ICP

Another thing you may want to take a look at is the spatial distribution of the points you're using for registration. If you're working with raw undecimated tripod lidar scans then you have many more points per unit area on surfaces that are close to the scanner than you have on points that are far ...
by jedfrechette
Sat Oct 31, 2020 3:19 pm
Forum: Questions
Topic: Automating common workflows?
Replies: 12
Views: 4974

Re: Automating common workflows?

The name of the vertex attribute added by the --density flag is 'value'.
by jedfrechette
Fri Oct 30, 2020 11:41 pm
Forum: Plugins
Topic: PoissonRecon.exe to output density SF CC can use?
Replies: 6
Views: 8400

Re: PoissonRecon.exe to output density SF CC can use?

You're using the `--density` flag correctly. When you do so it adds a vertex attribute named `value`. Just make sure you select that attribute as a scalar field, see below, when you import the resulting ply in to CloudCompare.

psr_ply_open.JPG
psr_ply_open.JPG (51.63 KiB) Viewed 8357 times
by jedfrechette
Thu Apr 09, 2020 2:54 pm
Forum: Plugins
Topic: Intellectual Property
Replies: 3
Views: 6680

Re: Intellectual Property

The Free Software Foundation maintains a quite extensive FAQ based on their interpretation of the license.

https://www.gnu.org/licenses/gpl-faq.en.html