ContextCapture Master - Center Problem with 3D mesh, Building Holes, Buildings Deformed

RE: ContextCapture Master - Center Problem with 3D mesh, Building Holes, Buildings Deformed

Oto — Mon, 04 Apr 2022 12:16:37 GMT

For Nadir it also helps to reuse 3D calibration - https://communities.bentley.com/products/3d_imaging_and_point_cloud_software/w/wiki/28536/the-model-appears-to-be-curved-instead-of-being-horizontal-after-at

These perturbations(worhmoles) appear where the accuracy of model is lower than thickness of the wall or fence. Easy way is to use Ultra accuracy settings in reconstruction but it is not reasonable for large models.

Also try "high density" option in aeortriangulation it could help to drop some lower accuracy points. "Legacy engine" preset also may work better.

[quote userid="1163965" url="~/products/3d_imaging_and_point_cloud_software/f/contextcapture-descartes-pointools-forum/227835/contextcapture-master---center-problem-with-3d-mesh-building-holes-buildings-deformed/704425"]For example, with another program (trial) with the same imagery[/quote]

STFM softwares are rapidly evolving so better algorithms can give better results in some cases.

RE: ContextCapture Master - Center Problem with 3D mesh, Building Holes, Buildings Deformed

Bruneau St-Jean — Fri, 01 Apr 2022 21:29:39 GMT

The only way to fix these building holes is to use the touch up tool as mentioned yesterday. I wouldn't say that Nadir imagery is useless. It always depends on the type of mesh you want to achieve. In such an area, if the sides of the buildings are important and you want to deal with "holes" and "melting" effect as little as possible, then combining Nadir and Oblique imagery is a must.

RE: ContextCapture Master - Center Problem with 3D mesh, Building Holes, Buildings Deformed

Juan Polanco — Fri, 01 Apr 2022 18:28:20 GMT

In the end, Nadir Imagery is useless in ContextCapture. It doesn't exist any way or solution to fix those buildings....

RE: ContextCapture Master - Center Problem with 3D mesh, Building Holes, Buildings Deformed

Bruneau St-Jean — Thu, 31 Mar 2022 19:10:35 GMT

You can get a 2.5d orthophoto production.

www.youtube.com/watch

RE: ContextCapture Master - Center Problem with 3D mesh, Building Holes, Buildings Deformed

Juan Polanco — Thu, 31 Mar 2022 19:07:05 GMT

Does exist a possibility to create a 2.5d mesh reconstruction?

RE: ContextCapture Master - Center Problem with 3D mesh, Building Holes, Buildings Deformed

Bruneau St-Jean — Thu, 31 Mar 2022 18:43:39 GMT

I suggest you to use the touch up tools. Below are 3 youtube videos about this topic.

ContextCapture Tutorial: Touch-up (Part 1/3) - YouTube

ContextCapture Tutorial: Touch-up (Part 2/3) - YouTube

ContextCapture Tutorial: Touch up (Part 3/3) - YouTube

RE: ContextCapture Master - Center Problem with 3D mesh, Building Holes, Buildings Deformed

Juan Polanco — Thu, 31 Mar 2022 18:38:12 GMT

Yes, how can I attack these problems? For example, with another program (trial) with the same imagery, I put the 3D polygon constraint and fixed the hole.

Will be impossible to be fixed like this or similar?

RE: ContextCapture Master - Center Problem with 3D mesh, Building Holes, Buildings Deformed

Bruneau St-Jean — Thu, 31 Mar 2022 18:34:19 GMT

If you look in C:\Program Files\Bentley\ContextCapture\doc and look at the "Drone Capture Guide". The section about the "Comparison of Nadir vs. Nadir + Oblique" will give you explanations about this situation.

RE: ContextCapture Master - Center Problem with 3D mesh, Building Holes, Buildings Deformed

Bruneau St-Jean — Thu, 31 Mar 2022 18:28:28 GMT

So, if you look in top view, the model looks fine? Having obliques imagery could have helped to correct this melting effect. Basically this is happening because there is no or not enough images that cover the sides of buildings.

RE: ContextCapture Master - Center Problem with 3D mesh, Building Holes, Buildings Deformed

Juan Polanco — Thu, 31 Mar 2022 18:23:50 GMT

Yes, it is.

RE: ContextCapture Master - Center Problem with 3D mesh, Building Holes, Buildings Deformed

Bruneau St-Jean — Thu, 31 Mar 2022 18:22:02 GMT

Is this a production from Nadir imagery only?