Kinect pointcloud to mesh

vvvv beta question
1

hello,

so far I was very pleased with quads 2d and some nice animation features, but now I would like to go into 3D grids and meshs.

Ok, what I want to do, I want transform the kinect point cloud or the depth picture into a low polygon mesh and dye it a little bit.

here are a few examples:

http://vimeo.com/76982387
http://vimeo.com/77932782

my questions:
is it better to take the point cloud or the depth picture as starting point?

how can I adjust the internal kinect webcam to the depth cam?

maybe someone can show me the right direction.

regards

2

ok,

I played arround with the amazing 3d stuff now, mesh, vertexbuffer… and enabled although my Grundstudium math.

currently I have the problem to do something like 2d spread - Delaunay (2D) - Mesh in 3D. is there a way to do this Delaunay triangles in 3D?

on the other hand I thought I could do the Delaunay (2D) stuff with the x and y coordinates of the pointcloud, it doesn’t look very nice… where is my fault?

pointCloud_toShader.zip (129.3 kB)

3

I sorted the vertices to get a cleaner mesh. perhaps this works to get a cleaner mesh.

one question remains: how can I adjust the internal kinect webcam to the depth data? I saw the https://discourse.vvvv.org/t/8622 thread, unfortunately the openni setup doesn’t work at the moment.

would be nice if someone could give me a few hints on this topic. anyone have experience with this?

or is there a way to calculate the pixel position in the webcam foto from the vertice data?

4

please, not all at once. no answers?

anyone interested in doing this job for money, feel free to contact me.

regards

5

I for one am keeping an eye on this thread :) But, because I am sort of where you are, so I can’t be of much help. I mean, using a Pipet to generate some data to apply to a mesh, yeah but that’s not want you’re asking.

6

there are two problems

_1 to make a cute mesh out of the pointcloud. actually I’am learning a lot in this area, the results getting betting but it’s far away from my expectation.
ok, man wächst mit den aufgaben.

_2 i have done the colorvalue to point transformation in processing with a simple function, works good for the desired distance. now I am trying to do this transformation in v4.

perhaps I give elliots calibration method a try… actually I didn’t get the openni driver to work with v4.

thanks for your answer!

7

hello,

i colored the pointcloud with the pipet. At the moment I am searching a way to get the exact pixel of the corresponding vector. Is there a function to do this transformation?

8

Hello!
You can use the Kinect depth data without background as Displace Texture of a Grid.

Check: heightmap-displacement