unfortunately, i dont recall trying the resp. opencv code, but
from an older project, i remember, that i had to ‘unwrap’ the phase maps - subtract the 1st phase map from a ‘base phase value’ from, to get to some kind of disparity.
then, imo, the test data is not fit for human experiments.
you’ll need at least phase offsets as large as in the repo above to make a nice 3d pc