Mesh problem - holes in reconstruction

RE: Mesh problem - holes in reconstruction

Oto — Mon, 11 Oct 2021 07:15:16 GMT

Add this as Idea - https://realitymodeling.ideas.aha.io/

RE: Mesh problem - holes in reconstruction

Erick_SC — Mon, 11 Oct 2021 02:35:46 GMT

I managed to add the geometric constraints using the ASTER DEM to Cloudcompare as Point cloud, then convert this to Mesh and simplify it to create a smooth OBJ which is then loaded to CC.

It was a pain in the *ss but it was good enough.

I hope that CC could improve the geometry using existing base layers, that could be interesting.

RE: Mesh problem - holes in reconstruction

Oto — Fri, 08 Oct 2021 15:25:45 GMT

Cheat a litle bit or import the points as pointcloud from metashape.

Isn't the photos there overexposed so no automatic tie points are found?

Also have you tried reconstruction setting to fill all holes and try larger tiles so the holes are not near tile borders?

RE: Mesh problem - holes in reconstruction

Oto — Fri, 08 Oct 2021 15:25:35 GMT

You could cheat a litle bit or import the points as pointcloud from metashape.

Isn't the photos there overexposed so no automatic tie points are found?

Also have you tried reconstruction setting to fill all holes and try larger tiles so the holes are not near tile borders?

RE: Mesh problem - holes in reconstruction

Erick_SC — Thu, 07 Oct 2021 17:05:24 GMT

Hi, this is not an option without going to the site once again, I wasn't expecting this issue on CC so I don't have access to the site anymore.

I'm processing this in Metashape just to get some sort of backup and it seems to be better in those areas:

RE: Mesh problem - holes in reconstruction

Erick_SC — Thu, 07 Oct 2021 16:58:19 GMT

Thanks for your answer, but how can I get a mesh constraint if this area was never mapped before?

RE: Mesh problem - holes in reconstruction

Oto — Thu, 07 Oct 2021 16:11:31 GMT

You could try adding mesh constraint.

According to help:

[quote url="https://docs.bentley.com/LiveContent/web/ContextCapture%20Help-v18/en/GUID-F5D596BB-8465-4F87-82C0-2863B198DBFB.html"]Geometry constraints ContextCapture uses this data as a soft constraint in the reconstruction process: a reconstruction constraint is used only if there is no other reliable data in the area: wherever reliable 3D information can be inferred from input photos, it will override the reconstruction constraint.[/quote]

Ignore this notice from help as it is no longer true - Geometry constraints are available only in ContextCapture Center Edition

RE: Mesh problem - holes in reconstruction

Bruneau St-Jean — Thu, 07 Oct 2021 15:04:14 GMT

Does this acquisition contain nadir imagery only? If so it may help if you add more images take at an oblique angle. You are right that this is more than likely caused by the lack of texture in that area....