Optimal board for vision processing

[matan129]

Hello, I'm a new (first year) member in a rookie team (this will be the 3rd year for the team) . As a enthusiast developer, I will be a part of the programming sub team. We program the RoboRio in C++ and the SmartDashboard in Java or C# (using ikvm to port the java binaries to .NET).

In this period, before the competition starts, I learn as much materiel as I can. A friend of mine and I were thinking about developing a vision processing system for the robot, and we pretty much figured that utilizing the RoboRio (or the cRio we have form last year) isn't any good because, well, it's just too weak for the job. We thought about sending the video live to the driver station (classmate/another laptop), when it will be processed and then sent back to the RoboRio. the problem is the 7Mbit/s networking bandwidth limit and, of course, the latency.
So, we thought about employing an additional board, which will connect to the RoboRio and do the image processing there. We though about using Arduino or Raspberry Pi, but we are not sure they too are strong enough for the task.

So, to sum up: What is the best board for using in FRC vision systems?

Also, if we connect, for example, a Raspberry Pi to the robot's router and the router to the IP camera, the 7Mbit/s bandwidth limit does not apply, right? (because the camera and the Pi are connected via LAN)

P.S. I am aware that this question has been asked in this forum already, but it was a year ago. So today there may be better/other options.