Question

I am using the Kinect sensor to generate a point cloud of a person.
I need to generate from the point cloud the corresponding set of collision surfaces in NVidia PhysX.
To achieve it i have to smooth and after triangulate it to concave mesh/set of convex meshes.
I’ve found only 1 smoothing algorithm:

    The Moving Least Squares.

To triangulate i’ve found few algorithms:

    Greedy Projection Triangulation or
    Constrained Delaunay triangulation.
    Ear clipping algorithm

And ready solution witch needs an oriented points as input data.
I also want to do it in realtime(at initialization create mesh and after move parts of it corresponding to real person moves) so i need fast methods.
Also smoothing algorithm must return < 1000 points to achieve low polly meshes.
Can u advise some useful methods?

Answer 1

Maybe you can use The Point Cloud Library (PCL).

You can find functions for downsampling in module Filters.
And for meshing in the module Surface.

So you should be able to create low poly meshes from your point clouds in realtime.