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problem compiling ros with standalone opencv 2.3.1

asked 2011-12-02 12:47:41 -0500

asrinivasan31
51 ●3 ●4 ●6

updated 2014-04-20 14:09:49 -0500

ngrennan
1 ●1 ●1

Hi:

I having trouble getting rosmake to compile with the new version of opencv. I keep getting "fatal error: opencv-2.3.1/opencv2/features2d/features2d.h: No such file or directory compilation terminated."

I don't remember personally installing opencv, it must have come up with something else, perhaps (ROS-Electric). But anyway, I have the *.so.2.3.1 libraries in the /usr/lib folder and the include directory in /usr/include/opencv-2.3.1/opencv2/.... I set the C_PATH_INCLUDE and CPLUS_PATH_INCLUDE variables to the 2.3.1 directory and yet it still can't find the .h files.

What else is required so my package can see it? I think Cmakelists.txt only has the Find_Package(OpenCv) which only finds the old opencv and not the 2.3.1 version. I need it to be this version so I can use the simple blob detection api. Any help is appreciated.

Thanks in advance.

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answered 2011-12-04 04:22:07 -0500

Kevin

2952 ●50 ●76 ●113 http://walchko.github.io/

updated 2011-12-04 04:46:45 -0500

It would be helpful if you gave more information ... operating system, version of ROS, etc.

OpenCV is an external library in Electric (which I am guessing you are using). Try installing the library. On the Mac using homebrew do: brew install opencv.

In my CMakeLists.txt file to build a fictional program called test, I have the following:

find_package(OpenCV 2.3.1 REQUIRED)
rosbuild_add_executable(test src/test.cpp )
target_link_libraries(test ${OpenCV_LIBS})

If you are not sure which opencv cmake is finding, you can do something like this to the CMakeLists.txt:

if(OpenCV_FOUND)
     message("====== Found ${OpenCV_VERSION} =======")
endif(OpenCV_FOUND)

Hope that helps!

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Asked: 2011-12-02 12:47:41 -0500

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Last updated: Dec 04 '11

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