Best way to remove unwanted parts of mesh and its assoc texture?

Hi,
V8.
Imported two .obj
each is a different view of same item on a white table.
each has bits of white remaining, and also some black areas.
have orient3pt scale yes together.
those white and black parts are spoiling the results. which otherwise would be a mostly complete object .

I have 5 chunks in all to use.

How do I delete the white and black parts, leaving just a mesh with texture of the object ?

Cheers

Steve

In Metashape, I think you would need to delete those point before you generate the mesh with texture.

Its probably better to post this on the Metashape forum