Why is the space between the grid holes filled with black?

[mraw]

One element of my subject is a grid( shot before black). The tie points look nice, but when the mesh is created all the holes are filled with black. Can somebody please explain this/how to avoid this?
Thanks a million

[Alexey Pasumansky]

Hello mraw,

What settings you are using for mesh generation and what version of Metashape?

Most likely the interpolation appears due to the absence of imagery that covers the back side of the grid. You can try, however, to clean up the model using Confidence criterion (Gradual selection).

[mraw]

Hello Alexey,
thanks for getting back to me. I'm using Metashape standard Version 2.0.1

I always use depth maps for the model creation. I assumed that this behaviour is linked to the depth maps. Would we have been better off, placing a checker map behind the bars?

I use 'gradual selection' ( in the way this guy explains here : https://www.youtube.com/watch?v=YycmtJTFz2I&t=222s ) a lot.
Thanks