Search found 156 matches

by Dimitri
Fri May 19, 2017 3:40 pm
Forum: Issues, bugs, etc.
Topic: issue with C2C on large airborne lidar lines
Replies: 5
Views: 4667

issue with C2C on large airborne lidar lines

Hi Daniel, I'm running C2C through command line (but the same issue occurs when using exactly the system in the GUI version) and I have the following issue: . I'm comparing airborne lidar flight lines (typically with 30-80 millions points) to a reference dataset which does not have the same extent (...
by Dimitri
Fri May 05, 2017 1:35 pm
Forum: Requests, new functionalities
Topic: Simple graph plotting one scalar against the other
Replies: 0
Views: 7055

Simple graph plotting one scalar against the other

Hi, it would be very interesting to directly be able to plot a graph for a point cloud with: . in abscissa: a scalar to be chosen . in ordinate: a scalar to be chosen . simply use points for display (maybe with an option for dynamic random subsampling to limit the number of points do display ?) and ...
by Dimitri
Fri May 05, 2017 1:24 pm
Forum: Questions
Topic: curvature analysis
Replies: 13
Views: 9061

Re: curvature analysis

Indeed, that would be super useful to know if the curvature is positive is negative with respect either to the local normal (if known), or to the vertical direction (e.g., a +Z orientation). You could do much more advanced point cloud segmentation with this info.
by Dimitri
Thu Apr 27, 2017 2:28 pm
Forum: Questions
Topic: Registration error in M3C2 tab
Replies: 4
Views: 2830

Re: Registration error in M3C2 tab

Hi, the registration error is independent of the point cloud roughness (well, except if you base your registration on ICP for instance...but that's a different problem...). To quantify the registration error, there are various ways: . either you have parts of your two clouds that you know have not c...
by Dimitri
Mon Apr 03, 2017 4:15 pm
Forum: Questions
Topic: Best computer configuration for CC?
Replies: 5
Views: 11685

Re: Best computer configuration for CC?

Ok, so you are not sure that the windows version was actually not limited by the available RAM. If windows starts to swap, of course, CC becomes a nightmare to use. The question is more whether there's a significant difference while you don't have this limitation.
by Dimitri
Fri Mar 31, 2017 4:13 pm
Forum: Questions
Topic: Best computer configuration for CC?
Replies: 5
Views: 11685

Re: Best computer configuration for CC?

Quick comment: . GPU: no need to invest in a quadro Nvidia professional card. Cloudcompare does not benefit from it. Better to invest in a good gaming graphic card with at least 4gb memory. I've recently upgraded to a Geforce 1070 with 8Gb and it's really great. It can handle navigation in 3D with p...
by Dimitri
Mon Feb 06, 2017 6:41 pm
Forum: Questions
Topic: Vertical surfaces
Replies: 6
Views: 4461

Re: Vertical surfaces

Works also (depending on your point density and noise): . map elevation as a scalar (tools->projection->export coordinate to SF (Z) . compute the gradient (scalar->gradient) . filter by a threshold value (min/max) I often use Daniel's suggestion, but on large clouds, normal calculation can be long
by Dimitri
Mon Dec 12, 2016 9:08 pm
Forum: Issues, bugs, etc.
Topic: Windows Server 2008R2 x64
Replies: 10
Views: 7219

Re: Windows Server 2008R2 x64

Hi matknaak, I'll be interested to know if you're able to run CC on remote desktop through your nvidia grid. Regarding graphic power: There's a post hidden somewhere in the forum where users have compared various graphics cards (quadro vs geforce). Here's the link a user (JedFrechette) set up to reg...
by Dimitri
Wed Nov 23, 2016 10:22 am
Forum: Issues, bugs, etc.
Topic: Label moving
Replies: 45
Views: 84773

Re: Label moving

I don't remember where you change this setting for Quadro cards, but you can specify to use it as a "game videocard development", or something like that. It'll make it operate as a regular geforce card. It'll actually slightly boost FPS in cloudcompare, and you may not have issues like the...
by Dimitri
Tue Nov 15, 2016 12:23 am
Forum: Questions
Topic: Questions about M3C2 distance measurement
Replies: 2
Views: 2069

Re: Questions about M3C2 distance measurement

Hi, glad you liked the approach in M3C2 ;-) Unfortunately, there's no simple way to get the data for all scales in one single operation. If you choose optimal scale, you'll get the standard deviation for the optimal scale only which may vary from point to point. A solution, is...to run M3C2 successi...