Depending on your UAV tracking needs, I can provide an off-the-shelf solution as I have a working C++/OpenCV tracking library which compiles on many platforms (including Pi, etc.).
Relevant Skills and Experience
I have done many C++ tracking projects here, and I have my own opencv-based tracking library (PolyTracker). Many of the object tracking projects I have done here were used in counters.
Proposed Milestones
$125 USD - initial prototype using opencvc++ tracking library, more. (3 days?)
$125 USD - additions, tuning, bug-fixes, etc
Additional Services Offered
$50 USD - object and scene ID based on deep learning,
Which OS? If you send video with objects to be tracked. I can demo of my tracker for you now.