Hi Jack,

 ... more below...

>   I am new to ROS.

Welcome!

Thanks!
 

> I have a 4 camera stereo set using 4 synchronized cameras that are not
> supported by ROS.
> This is not unlike what PR2 uses.
> I would like to use these camera with ROS.
> What is the best way to do this?

That depends on what kind of cameras they are.

VRMagic Multisensor Intelligent Cameras.
 

> Do I need to write my own "driver"?

Yes, unless someone has already written one.

I was afraid you'd say that. ;-)
 

> What is the easiest way to do this? As I said I am new to ROS.

The extra ROS wrapping for publishing camera data does not involve
much additional code, but does require a basic understanding of the
image pipeline. So, study the interfaces and look at examples of other
drivers, then ask more questions.

Thank you, I will.

BTW, is there a "mock" camera module, that I can feed AVIs or other video to simulate a camera?
This will help me with debugging and also with understanding the whole pipeline.

Thanks,
Adi