Hi

Could you please ask this question on http://answers.ros.org We're
transitioning troubleshooting questions to that website to decrease the
volume on this mailing list and make past questions more visible.
https://code.ros.org/lurker/message/20110216.014950.2c9cb33e.en.html

Thanks,
Tully

On Thu, Feb 17, 2011 at 4:43 AM, Asghari Oskoei, Mohammadreza <
m.asghari-oskoei@herts.ac.uk> wrote:

> Hi,
>
> Thanks to all,
>
>
>
> modified stereo_camera_model.cpp in image_geometry, now I can receive
> /stereo/disparity message, but still there is problem in image sync when I
> want to view by:  rosrun image_view stereo_view stereo:=/stereo
> image:=image_rect  there is just three gray windows (no image) and a [WARN]
> message as below
>
> any suggestion, please?
>
>
>
>
>
> [ WARN] [1297946062.739511145]: [stereo_view] Low number of synchronized
> left/right/disparity triplets received.
>
> Left images received:      104 (topic '/stereo/left/image_rect')
>
> Right images received:     102 (topic '/stereo/right/image_rect')
>
> Disparity images received: 18 (topic '/stereo/disparity')
>
> Synchronized triplets: 0
>
> Possible issues:
>
>                * stereo_image_proc is not running.
>
>                  Does `rosnode info /stereo_view_1297946016943512050` show
> any connections?
>
>                * The cameras are not synchronized.
>
>                  Try restarting stereo_view with parameter
> _approximate_sync:=True
>
>                * The network is too slow. One or more images are dropped
> from each triplet.
>
>                  Try restarting stereo_view, increasing parameter
> 'queue_size' (currently 5)
>
> [ WARN] [1297946077.740713539]: [stereo_view] Low number of synchronized
> left/right/disparity triplets received.
>
> Left images received:      147 (topic '/stereo/left/image_rect')
>
> Right images received:     155 (topic '/stereo/right/image_rect')
>
> Disparity images received: 29 (topic '/stereo/disparity')
>
> Synchronized triplets: 0
>
> Possible issues:
>
>                * stereo_image_proc is not running.
>
>                  Does `rosnode info /stereo_view_1297946016943512050` show
> any connections?
>
>                * The cameras are not synchronized.
>
>                  Try restarting stereo_view with parameter
> _approximate_sync:=True
>
>                * The network is too slow. One or more images are dropped
> from each triplet.
>
>                  Try restarting stereo_view, increasing parameter
> 'queue_size' (currently 5)
>
> _______________________________________________
> ros-users mailing list
> ros-users@code.ros.org
> https://code.ros.org/mailman/listinfo/ros-users
>
>


-- 
Tully Foote
Systems Engineer
Willow Garage, Inc.
tfoote@willowgarage.com
(650) 475-2827