Hi Ken,
Many thanks for the update--I now see the height and width in the
/camera_info message. I am not using calibration at the moment, but I
wanted a way to have width and height on /camera_info automatically from
the params in the launch file so I could read it from other nodes.
But there is still something I don't understand about uvc_camera so
sorry about having to ask such a basic question. If I set the image
width and height in my launch file to different values, e.g. 160x120
versus 640x480, I don't see any difference in the resolution of
/image_raw when viewed in image_view. By contrast, if I use the usb_cam
node from the bosch-ros-stack (http://www.ros.org/wiki/bosch-ros-pkg),
then I do see the change in resolution. Similarly, I don't see a change
in fps in uvc_camera if I change its value in the launch file. (usb_cam
does not appear to be able change fps so I can't compare.)
Should I be able to set these parameters in uvc_camera and see the
effects in image_view?
Patrick,
Can you give the driver at
https://github.com/ericperko/uvc_cam a try? It should be able to change parameters and you ought to see a difference (I know I've seen a difference using parameters such as exposure). It does have some basic dynamic_reconfigure support that you ought to be able to use to play with it and see results more or less live.
If it works, perhaps Ken and I can work to merge some of the functionality into one good UVC driver, since both are derived from Morgan Quigley's driver.
- Eric
Thanks!
--patrick