Marginal triangles are not removed

I use “remove marginal triangles” feature to remove the artefacts created after mesh processing, but as you can see from the attached screenshot only part of those additions are selected as marginal triangles? Is it expected, why are they not selected ?

Hello Serob,
not all “big” triangles are the marginal one.
In cases like this you need to select them manually or use Select large triangles tool.

Hey Ondrej.

If I use large triangles tool, it selects already some triangles from the real mesh, which is makes it not usable for our case.
Why are these kind of artefacts appear under the feet, that we need to think about their deletion?

You can also change the setting for large triangle selection tool according to your needs.
The reason for such result is insufficient capturing of such area. Also, the way how the reconstruction region is set and if you have set to remove marginal triangles in the reconstruction settings.