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Missing library link #11

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svisschers opened this issue Mar 2, 2018 · 2 comments
Open

Missing library link #11

svisschers opened this issue Mar 2, 2018 · 2 comments

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@svisschers
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When I try to run roslaunch screen_grab screen_grab.launch I get the following error message:

/opt/ros/kinetic/lib/nodelet/nodelet: symbol lookup error: /home/stephan/catkin_ws/devel/lib//libimage_show.so: undefined symbol: _ZN2cv6imshowERKNS_6StringERKNS_11_InputArrayE

According to google a symbol lookup error could be due to an included package that is changed or missing. Do you know how to fix this?

@svisschers
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Oh by the way, I am trying to run this on ROS Kinetic Kame

lucasw added a commit that referenced this issue Mar 2, 2018
…both image_view and image_show lock up very quickly, while rqt_image_view is fine
@lucasw
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lucasw commented Mar 2, 2018

image_show uses cv::imshow which is from OpenCV highgui which cv_bridge used link but that changed a few months ago.

pull the latest to get a new version that corrects that- except something else is wrong #12 , image_show locks up after a few frames and image_view (roslaunch screen_grab screen_grab.launch use_image_view:=true use_image_show:=false) locks up on the very first frame, so something else is wrong.

If you have the same problem I recommend

roslaunch screen_grab screen_grab.launch use_image_show:=false

and use rqt_image_view instead:

rqt_image_view /image

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