Hi Qaswar ,
We are currently adding supprot for the TOF-VGA to depthai, which should be available in Q2. For 3D mapping, I'd suggest checking VIO/SLAM docs. There were a few projects for gait analysis, particularly one for person recognition based on gait, and one for animal healthcare (I think cows), but those are both private projects and we, unfortunately, can't share any additional resources. For gait recogntiion you could leverage eg. depthai-blazepose or movenet application Thoughts?