Agisoft Metashape

Agisoft Metashape => Bug Reports => Topic started by: skcotterell on January 22, 2022, 01:34:54 AM

Title: Ripples appearing in built Mesh
Post by: skcotterell on January 22, 2022, 01:34:54 AM

Hey everyone,

I've been having some issues with 'ripples' appearing my model after building the Mesh. Making it appear almost 3D printed on one axis. This is the second object this has happend with, however the I wont have access to the other until until next week.

My dense point cloud i'm very happy with, and as a sanity check i ran it through RC and didn't get any ripples so I'm not sure what setting is causing this effect?

Any help would be greatly appreciated. Thanks

Title: Re: Ripples appearing in built Mesh
Post by: Alexey Pasumansky on January 23, 2022, 08:33:26 PM

Hello skcotterell,

Can you also share the screenshot of the source dense cloud that you are using for the mesh generation?

Additionally please check, if you get better mesh reconstruction results with the interpolation enabled, or even when using the depth maps as a source in Build Mesh dialog.

Title: Re: Ripples appearing in built Mesh
Post by: frmgsft on January 26, 2022, 10:47:27 PM

I got the same issue with 1.8.1 RC
Ripples show up on meshes reconstructed with 'Use strict volumetric masks' enabled. Turning this option off brings a smooth/correct geometry.
Also, density of the mesh reconstructed using masks is way higher (like 1117k vs 493k faces).

Title: Re: Ripples appearing in built Mesh
Post by: Andreas1206 on January 27, 2022, 10:33:45 AM

Hello,

I'm experiencing the same issue when building the mesh from a dense cloud - also with interpolation enabled and strict masks disabled. It does not happen on the mesh based on depth maps, but I sometimes prefer working with the dense cloud, because filtering options before calculating the mesh are usefull.

best regards,

Andreas

Title: Re: Ripples appearing in built Mesh
Post by: Alexey Pasumansky on January 28, 2022, 08:20:04 PM

Hello frmgsft,

How many strict masks do you have in that project, how tight are those masks to the actual object?


Hello Andreas,

Can you provide the screenshot of the same scene in the dense cloud view and specify the depth maps quality used? If you can share the project, which can be used for analysis, where the issue can be reproduced, please send it to support@agisoft.com.