Ignoring certain parts of texture / photos

Hi, I am new to ODM & I was wondering if the following is possible:

I have a lot of images where I want to erase certain parts of the image before processing so it does not show up in the texture. I am thinking of photoshopping the images by making the undesired locations transparent.

(Context: I am trying to make a detailed 3D model of a rock formation, where 90% of the images are from “vertical flights” & only a few are from overhead flights. I have a lot of tree texture that shows up in the wrong place (glued to the rock) & I would like to “delete” the trees. )

Cheers - Francis

Yes, I believe it would work if you paint these areas transparent.