[ros-users] uvc_camera and stereo_proc

Eric Perko wisesage5001 at gmail.com
Tue Feb 8 17:49:37 UTC 2011


IIRC, the stereo image proc node doesn't need to be pushed down into a
namespace. That is only important if you are running multiple pairs of

What is the output of rxgraph if you run uvc_stereo and stereo_image_proc,
both with no remappings or namespaces? Does stereo image proc successfully
subscribe to your cameras and output point clouds/disparity images?

- Eric

On Tue, Feb 8, 2011 at 12:22 PM, abhy <abhy.12354 at gmail.com> wrote:

> Hi,
> This is the example of the output i get from different packages:
> If gscam package using single camera:
> /gscam/image_raw
> /gscam/.....
> If i use usb_cam package then i get (Single camera),
> /usb_cam/image_raw
> /usb_cam/.....
> I can use any of the above packages in image_proc
> ROS_NAMESPACE=my_camera rosrun image_proc image_proc
> $ rosrun image_view image_view image:=my_camera/image_rect_color
> Here i replace my_camera with either /usb_cam or /gscam
> Now,
> If i use uvc_stereo package i should expected to get,
> /uvc_stereo/left/image_raw
> /uvc_stereo/left/......
> (same for right side camera)
> Instead, i get directly, (W/o /uvc_stereo)
> /left/image_raw
> /left/......
> (same for right side camera)
> This is hard to replace in the image_proc_stereo package like above case.
> As per package it should expect,
> /stereo/left/image_raw
> /stereo/left/camera_info
> /stereo/right/image_raw
> /stereo/right/camera_info
> $ ROS_NAMESPACE=stereo rosrun stereo_image_proc stereo_image_proc
> __name:=proc
> $ rosrun image_view stereo_view stereo:=/stereo image:=image_rect_color
> But, here i dont get either /stereo OR /uvc_camera to replace /stereo since
> i get /left/image_raw topic and not /<stereo>OR</uvc_camera>/left/image_raw
> Do you suggest any way to get such publish topics through uvc_stereo
> package
> so as to use it in image_proc_stereo?
> I hope it is not confusing. :-) I have tried my best to explain it. Please
> let me know if it is still not clear.
> - Abhy
> --
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