Remove OpenCv Opencv2 etc. from your run and build depends (in package.xml) as well as from the line find_package( catkin REQUIRED COMPONENTS .... (in CMakeLists.txt)
With catkin in groovy/hydro OpenCV is always embedded as stand-alone package using:
find_package( OpenCV REQUIRED )
(Note than I‘ve added the REQUIRED)
Note that you have also to add OpenCV include directories like
include_directories( ${catkin_INCLUDE_DIRS} ${OpenCV_INCLUDE_DIRS} )
and for each of your execs/libs you created as target like
add_executable( my_exec my_cpp_file.cpp )
you need to link against both catkin and OpenCV libs:
target_link_libraries ( my_exec ${OpenCV_LIBRARIES} ${catkin_LIBRARIES} )
Could not find a configuration file for package opencv2解决 方法
原文：http://blog.csdn.net/dxuehui/article/details/45716627