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I almost followed your description. But instead of manipulating my opencv path I simply place the ROS path at the end of my python path:

import sys sys.path.remove('/opt/ros/hydro/lib/python2.7/dist-packages') sys.path.append('/opt/ros/hydro/lib/python2.7/dist-packages')

Though I must admit that it is a pretty ugly hack, it does work :)

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