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uos / lvr2

Las Vegas Reconstruction 2.0
BSD 3-Clause "New" or "Revised" License
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artifacts due to not connected triangles #7

Open tlow92 opened 4 years ago

tlow92 commented 4 years ago

Hi,

I am trying to reconstruct a mesh from a point cloud that was exported using google cartographers assets writer. The data used is from "Deutsche Museum" which was scanned by the google cartographer team.

I played around with different parameters such as the smallRegion, fillHoles, ransac, and the different algorithms MC, PMC, SF and MT. No matter what parameters I choose, I always have alot of holes in the mesh, which look like the triangles are not connected correctly.

In this dataset the robot has a fixed position. I understand that since I don't provide the position of the robot (which is 0, 0, 0) the orientation of the normals can be inconsistent. Is this a problem for LVR when connecting the triangles?

Could it be, that the quality of the point cloud is just not good enough? Its a single room, which consists of 50M points.

Any advice is appreciated.

image

GPrathap commented 2 years ago

I also have similar issue, Screenshot from 2022-06-02 15-47-42

twiemann commented 2 years ago

Hi GPrathap, it seems the voxel size you are using is tool small, i.e., smaller then the point density in your cloud. Try to increase the -v parameter by a factor of 10 or larger. To get consistent surfaces you might also consider the number of nearest neighbor used for normal estimation and signed distance computation. This will come with larger runtimes but better approximations

GPrathap commented 2 years ago

@twiemann Yeap it works thank youu