[request] PCL Concave hull & Convex hull about pcl

[mvieth]

@nidhinsoni I would say it is probably the parameter choice. Have you tested different values for alpha?

[larshg]

Hey
You could alternatively try with:

1. Filter height (z=1350) (also X and Y if you want to remove the last noisy points)
2. Voxelfilter (I didn't do it, but could be done for faster processing / smoothing)
3. Project points to plane of objects - if you know that they are supposed to be flat. Some edges, seems to go up and
   downwards? If you have multiple layers, this option needs to be run after some clustering etc.
4. Normal estimation (k=50) (already here you can filter points by curvature)
   5)Run Boundary_estimation (k=50) - it gave the following:

And from the side:

[nidhinsoni]

@larshg hey thanks a lot for your suggestion. Do you mind sharing the code here? I didn't quite get the third point you mentioned

[larshg]

I quickly just used the pcl_tools, so I don't have any code 😄

[larshg]

A small tutorial for projecting points to a given plane can be found here https://pcl.readthedocs.io/projects/tutorials/en/latest/project_inliers.html

[nidhinsoni]

@nidhinsoni I would say it is probably the parameter choice. Have you tested different values for alpha?

Thanks this was it!