Here is some test data that I am working on to check out the capabilities and speed of a CMUcam5 Pixy camera.
I am using two interfaces to set the system up :-
1. USB plugging into the Pixy allowing the PixyMon Gui to monitor,adjust & capture objects (by colour).

2. A connection between the Pixy<> Arduino on the 6pin ICSP port (aka SPI (Serial Peripheral Interface))