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image_proc warning /camera/camera/...

image_proc

asked 2011-07-07 03:47:12 -0500

prp
118 ●5 ●5 ●15

Hi all,

I am receiving warnings from image_proc every 30 seconds or so:

Note the doubling of 'camera'.

The prosilica_camera node is publishing /camera/image_raw and /camera/camera/info, and image_proc is subscribed to them with no problem, other than the persistent warnings. I am launching the nodes with:

<launch>
  <node name="launch_prosilica_camera" pkg="prosilica_camera" type="prosilica_node" output="screen">
    <param name="~trigger_mode" type="str" value="streaming"/>
  </node>
  <node name="launch_image_proc" pkg="image_proc" type="image_proc" output="screen">
    <env name="ROS_NAMESPACE" value="camera"/>
  </node>
</launch>

It could be me, but I think this behavior just began recently, perhaps due to an update.

Any ideas?

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answered 2011-07-07 05:36:09 -0500

prp
118 ●5 ●5 ●15

Ah, found it. Not sure why the behavior changed recently, but the fix is to launch image_proc in the "/camera" name space, not in "camera". The modified .launch file is:

<launch>
  <node name="launch_prosilica_camera" pkg="prosilica_camera" type="prosilica_node" output="screen">
    <param name="~trigger_mode" type="str" value="streaming"/>
  </node>
  <node name="launch_image_proc" pkg="image_proc" type="image_proc" output="screen">
    <env name="ROS_NAMESPACE" value="/camera"/>
  </node>
</launch>

Thanks for the views!

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It's also recommended to use the <remap> roslaunch tag instead of the ROS_NAMESPACE environment variable.

tfoote ( 2011-07-09 08:47:10 -0500 )edit

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Asked: 2011-07-07 03:47:12 -0500

Seen: 295 times

Last updated: Jul 07 '11

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