I am a newbie to OpenCV. Followed the openCV tutorial. Now when i Build the project, the error comes. It says the include directory imgproc.hpp was not found. When i checked in the opencv/include/opencv2 folder, there were no imgproc.hpp and ml.hpp and video.hpp files. Please help. Working on Win32 and OpenCV2.4
You might be missing a directory, try: opencv/include/opencv2/imgproc/imgproc.hpp
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I am new to Ubuntu. I installed OpenCV following http://milq.github.io/install-opencv-ubuntu-debian/. Note that opencv_contrib are not installed. I had an error initially that opencv4.pc file was not found which I corrected by creating a new opencv4.pc in usr/local/lib and making appropriate changes in ~/.bashrc file. Now the error while compiling using c++ file from :
https://cv-tricks.com/installation/opencv-4-1-ubuntu18-04/.
This is the error I got:
.
I tried to locate the missing files in other locations but I was unable to find them. Please help me solve my problem.
I am trying to build this code:
https://docs.opencv.org/3.2.0/d5/d6f/tutorial_feature_flann_matcher.html
I am using Ubuntu 16.04 with CLion 2017.3 and have OpenCV 3.4 installed.
xfeatures2d.hpp can't be found on the system.
I have looked at many different problems on the internet, but couldn't find a solution.
Any help?
You have to include cmake comiplation flag to opencv OPENCV_EXTRA_MODULES_PATH and set it to the opencv_contrib/modules.
cmake -DOPENCV_EXTRA_MODULES_PATH=../opencv_contrib/modules
Here's what I had to do to compile OpenCV with xfeatures2d:
Download opencv_contrib (I took a release from the releases page). This step is what gives us xfeatures2d.
Unpack the tarball somewhere, e.g., ~/src/opencv_contrib-4.5.5
When configuring OpenCV (the main OpenCV source like opencv-4.5.2) with CMake, add the following option to cmake command line (adjusting the value to be your actual path to the modules subdirectory of the opencv_contrib tarball):
-DOPENCV_EXTRA_MODULES_PATH=$HOME/src/opencv_contrib-4.5.5/modules/
Now just build as you normally would and install.
The above actions gave me the expected file (among others): /usr/include/opencv4/opencv2/xfeatures2d.hpp.
I am working on a harr detecttion project. I want to generate the exe files using the .cpp files that come with Opencv. I am using CMake for it. When I try to do that I am getting an error like this. Don`t know how to solve it.
CMake Error at CMakeLists.txt:7 (ocv_check_dependencies):
Unknown CMake command "ocv_check_dependencies".
Configuring incomplete, errors occurred!
Source link: C:/opencv/apps/haartraining
Destination link: D:/build
Please help me.
I was working on some image processing that involves Haar detection. And i was having a hard time trying to configure with Cmake at first but i finally found manual configuration tutorial with out using Cmake or else. It has helped me a lot and you can get it here. I hope it will work perfect as it worked for me too. Click here -> http://www.anlak.com/using-opencv-2-3-1-with-visual-studio-2010-tutorial/. The tutorial uses open CV 2.3.1 but it will work perfect for recent versions too with the need for Cmake ore else.If you more questions, hit me up and i will explain.Good luck!
It looks like You need to compile the whole library with build examples option enabled (if You are using windows then I bet You use graphic cmake interface, so it shouldn't be a problem), and then You will find the .exe in bin directory,
or You would need to include OpenCVModule.cmake file found in cmake catalogue to CMake file You are trying to use for the build.
I didn't test the second option myself, but it looks like CMake file You are trying to use does not load all macros needed for it to run, but macros are loaded when the root library CMake file is used.
I am using OpenCV 2.3.1 with C++ on NetBeans 7.1 on Ubuntu 11.04 (Gnome). When I add the call
cvCreateSubdivDelaunay2D
and try to run the program in Debug mode I get the error message
/home/peter/NetBeansProjects/ArtifactImgFromCellFile/dist/Debug/GNU-Linux-x86/artifactimgfromcellfile: error while loading shared libraries: libopencv_calib3d.so.2.3: cannot open shared object file: No such file or directory
This despite the fact that I have libopencv_calib3d.so.2.3 in
/home/peter/OpenCV-2.3.1/lib
On NetBeans I went to
Properties:Linker:Run Time Search Directories
and added
/home/peter/OpenCV-2.3.1/lib
but that did not fix the problem.
Any assistance would be greatly appreciated,
Peter
In Netbeans you explicitly also need to link the library as follows.
Right click the project and open properties.
Go to Build -> Linker
Go to Libraries -> Add library file.
Browse to where your library is, i.e. the .so file. In your case it should be at /home/peter/OpenCV-2.3.1/lib/libopencv_calib3d.so
i've been working on this for a while now but i'm still stuck. This is what i've done...
Installed Eclipse
Installed SDK, NDK
Created a project from an existing source... which i browsed to muPDF/android
Then i installed Cygwin to build the project
I used ndk-build to build the project by cygwin
Then i got an error that says ".../Downloads/mupdf-0.8.165/android/jni/mupdf.c:11:19: error: mupdf.
h: No such file or directory"
I've been finding a way to fix this but it keeps on having other new problems after and after. so i would like to ask for your help... plz
Thanks in advance... Best regards, Sirisub
In the directory above there is a script called build.sh that runs the Android.mk and other makefiles; all the locations in those makefiles are set to be run from that location.
However, there are lots of other problems, not all of which I've resolved yet; quick hints, though, you need the third-party libs like jpeg and so on in a directory called "thirdparty" in the same source location as the rest of mupdf (so as siblings of the android subdirectory) and some of the libs need you to produce config headers to make everything work!
I'm currently trying to work out how to link it all ....