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I could be wrong, but cv_bridge expects OpenCV to be installed via opencv2 package, that in Hydro installs OpenCV as "3rd party package" where it gets installed under /opt/ros/hydro instead of general directory as you mentioned (I asked here if this guess is correct).

If this is correct then it's possible that linking might not work.

I could be wrong, but cv_bridge expects OpenCV to be installed via opencv2 package, that in Hydro installs OpenCV as "3rd party package" where it gets installed under /opt/ros/hydro instead of general directory as you mentioned (I asked here if this guess is correct).

If this is correct then it's possible that linking might not work.work with OpenCV that's installed differently.

I could be wrong, but cv_bridge expects OpenCV to be installed via opencv2 package, that in Hydro installs OpenCV as "3rd party package" where it gets installed under /opt/ros/hydro instead of general directory as you mentioned (I asked here if this guess is correct). correct, and it got confirmed by a OpenCV developer).

If this is correct then it's possible that linking might not work with OpenCV that's installed differently.

cv_bridge expects OpenCV to be installed via opencv2 package, that in Hydro installs OpenCV as "3rd party package" where it gets installed under /opt/ros/hydro instead of general directory as you mentioned (I asked here if this guess is correct, and it got confirmed by a OpenCV developer).

If this is correct then That said it's possible that linking might not work with the OpenCV that's installed differently.

In ROS Hydro cv_bridge expects OpenCV to be installed via opencv2 package, that in Hydro installs OpenCV as "3rd party package" where it gets installed under /opt/ros/hydro instead of general directory as you mentioned (I asked here if this guess is correct, and confirmed by a OpenCV developer).

That said it's possible that linking might not work with the OpenCV that's installed differently.