I don't understand what you want with RFID and arduinos. Do you mean following RFID tags around like here:
That's kind of University stuff. An arduino can be used for recognising tags held near it:
I found a video of someone who managed to steer robots here:
but unfortunately no details. Maybe you could try contacting him?
normally people construct these things to avoid using a camera. But if you want to find a face the following example shows you how to do this:
then you will just have to "follow" it by moving left or right with your robot. Here is a simple robot based on an arduino:
The arduino itself is not powerful enough to image process and you will have to connect it to a raspberry pi which does the processing.
this is an example of an kickstarter project which puts it all together (without RFID):
2017-01-23 17:25:36 UTC WeepingAngel - 38 points
hmmm... not really to do with the camera then. Anyhow here is an interesting tutorial on reading out RF on an arduino, itt may help:
I'm not a Matlab expert. but maybe you can change the receiver C code in the tutorial into Matlab code?
2017-01-31 08:55:43 UTC WeepingAngel - 38 points