You also don't need to have one processor do every thing. Use a WiFi cam mounted on the 'bot. Link the cam to the PC and have the PC do the image processing and send instructions to the 'bot. Lookup robotics - horse and rider.
That sounds like a better idea.
Can you explain me a bit more about this?
So what I make out of what you said is:
1. Wifi Camera sends image to PC.
2. I process the image in say MATLAB.
3. I send the instructions to the controller wirelessly from my results generated in MATLAB.
Now I am not very well versed with MATLAB. It would be really great if you could guide me on this.
How would I automate results from my MATLAB scripts to be sent over to the controller?
Give me some sources to study. Also, I am planning to get the XBEE module with the shield for my UNO board. How exactly would XBEE talk to my PC. (Is it possible to do that on an AD-Hoc network? or I would need a Wireless Router?)
It would be really helpful if you could give me more pointers on this.