[ros-users] Firewire camera synchronization

[Jack O'Quin]

On Thu, Dec 2, 2010 at 3:41 PM, Thomas Moulard <thomas.moulard at gmail.com> wrote:

> From the Flea2 documentation:
> « Automatic Synchronization
> Multiple Flea2 cameras networked on the same IEEE-1394 bus are
> automatically synchronized to within 125µs (maximum deviation)
> of each other, and can synchronize across buses using Point Grey
> MultiSyncTM software. »
>
> http://www.ptgrey.com/products/flea2/index.asp
>
> There is nothing in the userland which has to be used to enable the
> synchronization, it
> is automatic as long as the acquisition of the two images is done fast
> enough (which
> separate process cannot achieve).

Since two cameras on the same bus are synchronized automatically, it
may just work, even with separate processes.

Just to see what happens, could you try running two driver nodes each
connected to a single camera? Capture some images in a bag and check
the timestamps when they are published. That is easy to do with
"rxbag".
-- 
 joq