You'll need to provide paths for the calibration files using the
~left/camera_info_url and ~right/camera_info_url parameters.

$ rosrun uvc_camera stereo_node ... ...
_left/camera_info_url:=file:///path/to/left.yaml
_right/camera_info_url:=file:///path/to/right.yaml

or in a launch file:

<node pkg="uvc_camera" type="stereo_node" name="foo">
  <param name="left/camera_info_url" value="file:///path/to/left.yaml"/>
  <param name="right/camera_info_url" value="file:///path/to/right.yaml"/>
</node>

http://ram.umd.edu/git/ros/camera_umd.git/blob/HEAD:/uvc_camera/launch/stereo_node.launch

 - Ken

On Wed, Jan 26, 2011 at 4:40 AM, Homer Manalo
<homer.manalo@roboteknik.com> wrote:
> I'm using two playstation eye webcams using the uvc_camera driver.