added trackbars
Launch files re-structured
added arg stereo and image to launchfiles
Code re-structuration
Merge branch 'develop' of https://github.com/srv/valve_tracker_triton into develop
Z-calculation modified
Fixed: the triangualtion of 2d points
New: valve symmetric points tracker
removed white rectangle after training
Merge branch 'develop' of github.com:srv/valve_tracker_triton into develop
changed tracker GUI to only one window, containing all trackbars and images