Search found 10 matches

by cosmocompare
Wed May 06, 2020 4:48 pm
Forum: Questions
Topic: Convert image to point cloud?
Replies: 1
Views: 2885

Convert image to point cloud?

Hi there! I would like to generate mathematical art using CloudCompare. Can I send in an image file, for example black and white, and generate a cloud heightmap, preferably with a floor plane so that a poisson algo can generate a mesh from it? Thanks!
by cosmocompare
Wed Feb 01, 2017 4:54 am
Forum: Questions
Topic: What is the Best PT-CD simplification algorythm?
Replies: 1
Views: 1198

What is the Best PT-CD simplification algorythm?

There are a lot of processes for point cloud simplifications. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.10.9640&rep=rep1&type=pdf What is currently the best, state of the art, for those algorythms? It's a Spanish team from 2003, so there must by many more enhancements and adva...
by cosmocompare
Wed Feb 01, 2017 4:43 am
Forum: Requests, new functionalities
Topic: planar simplification of grid subsample voxels?
Replies: 1
Views: 2952

Re: planar simplification of grid subsample voxels?

this is interesting: Boissonnat and Cazals [8] introduce a coarse-to-fine point cloud simplification approach. Their algorithm takes a random initial subset of the input point cloud and uses its 3D Delaunay triangulation to define a signed distance function over the set. This implicit function is th...
by cosmocompare
Wed Jan 25, 2017 5:36 pm
Forum: Questions
Topic: Decimating a Mesh
Replies: 7
Views: 7145

Re: Decimating a Mesh

Meshlab has quadratic edge decimation which is very cool and free and some other decimation and point cloud filters, my fave is 3dsmax 2016 planar simplification.
by cosmocompare
Sat Jan 21, 2017 10:18 am
Forum: Requests, new functionalities
Topic: planar simplification of grid subsample voxels?
Replies: 1
Views: 2952

planar simplification of grid subsample voxels?

Hey i'm near Gre too. General recommendation for an algorythm that is very useful for houses and any objects that have flat parts. Super efficient easy algorythm... sample grids or spheres comprising 10-50 vertices, measure if they are on the same plane, if they are almost exactly on the same plane,...
by cosmocompare
Tue Jan 17, 2017 4:41 pm
Forum: Requests, new functionalities
Topic: Please how can i write SPHERICAL Cross Section Plugin?
Replies: 3
Views: 3249

Re: Please how can i write SPHERICAL Cross Section Plugin?

Hi Daniel, i found that Mehlab has selection of vertices by full mathematical formuli so spheres and things, perhaps you can steel their code for that, don't know if it's ok to steel from other open source projects but steeling is fine if it's in secret. see ya.
by cosmocompare
Sun Jan 15, 2017 12:41 pm
Forum: Questions
Topic: select / delete points by color
Replies: 11
Views: 18295

Re: select / delete points by color

Hi, The option Edit>Colors>Convert to Scalar Field is greyed out and not selectable, it's for a RGB scalar field that was generated using Tools>Sandbox>Distance Map...

What is missing from the RGB distance map to let it be selectable by RGB values?
by cosmocompare
Sat Jan 14, 2017 9:17 pm
Forum: Requests, new functionalities
Topic: Please how can i write SPHERICAL Cross Section Plugin?
Replies: 3
Views: 3249

Please how can i write SPHERICAL Cross Section Plugin?

I am rushing with some work and i want to write a program that deletes all points of cloud compare within a spherical radius, same as cross section, except that all points within a sphere are segmented to another group. It would be a good design tool for people that work with vases and similar, to b...
by cosmocompare
Sat Jan 14, 2017 7:31 pm
Forum: Requests, new functionalities
Topic: Boolean operations with 3D meshes
Replies: 6
Views: 18309

Re: Boolean operations with 3D meshes

Hi all, thanks for all the incredible work invested in CloudCompare. I was suprised that the boolean operations code is only for mesh!!! It's a lot easier to do boolean when there are no triangles to thing about, that is the entire difficulty of CSG for spheres and simple objects. I expect that a CS...
by cosmocompare
Sat Jan 14, 2017 6:58 pm
Forum: Questions
Topic: How to decimate a point cloud in Cloud Compare?
Replies: 3
Views: 9548

Re: How to decimate a point cloud in Cloud Compare?

Do the points get deleted based on distance? Do two close points get averaged?