it may just be our lighting but i increase the minimum match score significantly, then again, we also work in what used to be a school so there are a lot of white lockers with black knobs around and we weren't picking any up so
anyway: try setting up methods to modify the values of the target detection so that you don't have to rebuild, undeploy, download, and reboot, just set up a few buttons to change things around and away you go,
good luck with it,