In the last two years, I spent most of the time developing vision system for this robot (Red Atom), currently, Red Atom can play six games (Sprint, Obstacle Run, Basketball, Weight Lifting, Marathon, Penalty Kick) in FIRA Robot Soccer competition. Last year, Red Atom won the silver medal in all round game in FIRA 2014, we also planned to go to Korea for FIRA this year.
You can check the vision code here.
In 2015, our team decided to change vision board from Raspberry Pi to ODROID U3+, because the ODROID board is more powerful and good at running computer vision process, it can provide 30 FPS speed using USB camera.
Here is the Qualification Video that I prepared for FIRA in this year. You can take a look of our Red Atom.