OpenCV Install on Windows WithCode::Blocks and minGW ** Disclaimer ** Much to my dismay this tutorial is by far the most visited page on my website, why does this upset me? It upsets me because as glad as I am to see people using open source tools like OpenCV and MinGW rather than proprietary or commercial alternatives I feel strongly that developers should be using Linux not Windows for coding, especially for C++. Why should you use Linux? There’s a lot of reasons in my opinion but right now I am going to keep it simple. It will make you a better coder. period. Most people I know barely understand setting up their own C++ projects and linking to 3rd party libraries etc. and using Linux is the best way to see and learn how this works. I also personally recommend staying away from IDEs. Also Linux is quite often the first priority for developers of open source tools and windows support is sometimes an after thought. You’re obviously interested in open source or you wouldn’t be here – so I’m telling you to take the plunge, go all in, close this tab and grab an image of Ubuntu (or Mint if you want to be just like me :p ) and become enlightened! I’ll even go one step further and link some tutorials I use to install OpenCV on Linux and a link to my OpenCV project makefile. http://jayrambhia.wordpress.com/2012/06/20/install-opencv-2-4-in-ubuntu-12-04-precisepangolin/ http://www.ozbotz.org/opencv-installation/ http://www.samontab.com/web/2011/06/installing-opencv-2-2-in-ubuntu-11-04/ https://gist.github.com/pickle27/5311609 ** Update ** I’ve been talking to the OpenCV devs about some of the issues people (and me) have been having with the latest pre-built binaries, what you need to know is they are discontinuing pre-built binaries for MinGW. From now on you will have to build your own, I have included instructions for how to make your own binaries and its pretty straight forward. I still prefer MinGW to other compilers on windows (well actually I prefer Linux, see above) and I hope this tutorial will continue to be useful. Step 1: Install minGW MinGW is a c/c++ compiler for windows, head to their website and download the latest version (right at the top where it says “looking or the latest version?”) http://sourceforge.net/projects/mingw/files/ Install to the default location C:\MinGW From the options install mingw32-base and mingw32-gcc-g++, you can also install the other components if you wish, but all you need is the c++ compiler (g++). Step 2: Add minGW to system path Navigate to Control Panel -> System -> Advanced System Settings and then: Type a semi colon after the last entry in “path” and then paste your MinGW path (it should be C:\MinGW\bin if you chose the default location). Afterwords open up a command prompt and type “path” to make sure it worked (you should see minGW somewhere in the print out, probably near or at the end). Programs will need to be restarted for this change to take effect. Step 3: Install Code::Blocks Code::Blocks is an IDE (integrated development environment). Head to their website and download the latest version (codeblocks-10.05setup.exe) http://www.codeblocks.org/downloads/binaries Install it to the default location When the installer finished click yes to run Code::Blocks then go to Settings -> Compiler and Debugger Under the Toolchain Executables select GNU GCC Compiler from the drop down and then press AutoDetect verify that Code::Blocks has found MinGW If you like now might be a good time to test your Code::Blocks and MinGW setup with a simple Hello World C++ program. Step 4: Install OpenCV OpenCV is a library of Computer Vision functions. Head to their website and download the latest version (2.4.2 for Windows) http://opencv.org/downloads.html Click on the OpenCV-2.4.2.exe and choose C:\ as the extract directory OpenCV is now installed – but not configured with Code::Blocks ** Update ** If this is your first time through the tutorial doing a clean install then skip this step first and see if the supplied pre-built binaries will work for you, if you’ve already tried and had issues or if you really want to build your own then continue with this section. First you’ll need to download and install cmake Open cmake and select C:\opencv as the source directory and C:\opencv\build\x86\mingw as the directory to build the binaries (you could select any directory but choosing this one will overwrite the pre-built OpenCV binaries and then the rest of the tutorial is the same. Click configure choose minGW makefiles wait and then click generate. When cmake is done we need to open a command prompt in the build directory, so navigate to C:\opencv\build\x86\mingw then shift right click and choose open command window here then type “mingw32-make”. Mingw will now start compiling OpenCV, this will take a bit so feel free to do something else, when you come back type “mingw32-make install” and continue with the rest of the tutorial as is. Step 5: Add OpenCV to the system path C:\opencv\build\x86\mingw\bin (use the same process as above) Verify that both MinGW and OpenCV are in your system path Make sure you restart Code::Blocks before continuing if you have it open.Note: Add x86 binaries regardless of your system type (32bit or 64bit) because minGW is 32bit. Step 6: Configuring Code::Blocks with OpenCV Make a new Code::Blocks Project: . right click on your project and choose build options: . .You can also change the global compiler settings from the menu bar at the top right. . .Again Note – we are using 32-bit binaries even though the system is 64-bit because the compiler is 32-bit. rename it “test.// read the file 9 namedWindow( "Display window". 11 waitKey(0). Note – if you run your . image ). Share this: Twitter3 Facebook49 174 comments 1.// show our image inside it.. As I mentioned earlier you can also configure OpenCV using the global compiler and debugger settings and the steps are the same. 1 #include <opencv2/core/core. your guide came to rescue.png” or hard code its name and place it in the top of the project directory. imshow( "Display window".// new blank image 8 image = cv::imread("test.Now run this simple OpenCV “Hello World” program to test that the install has worked.png". this means that every new project is ready to go with OpenCV.// create a 10window for display. This allows you to choose the option new from template and avoid the configuration each time.exe from outside of code blocks the image needs to be in the same directory as the .hpp> 3 4 using namespace cv.// wait for a keystroke in the window 12 return 0. You can also choose file -> save project as template. amazing set of guidelines! thanx again. 5 6 int main() 7 { Mat image. yash February 24. 13} 14 Download any image you want. CV_WINDOW_AUTOSIZE ). 0). 2014 at 9:47 am thanks a lot kevin! after dozens of websites n hours of waste.hpp> 2 #include <opencv2/highgui/highgui. Reply .exe. All other method on the web seems forget “mingw32-make” and “mingw32-make install” steps. 2014 at 1:32 am thank you <3 Reply 5.Thanks for this. 2014 at 7:46 pm i don’t understood this step Help me plz Reply 3. Tobias February 28. . it works … without pain. mahmoud April 8. 2014 at 6:03 pm Many thanks.2. Reply Salah 1. 2014 at 10:54 am Thanks a lot but please add mingw32-make install mingw32-make clean Reply 4. – I dont understand your. I have some questions. French February 25. 2014 at 2:11 pm Hi. yldzmuhammed May 12. December 6. 4. the file opencv_core249. And i finish every step.dll is not in the system path. 2014 at 2:36 am I have the same problem (Codeblocks 13. this will take a bit so feel free to do something else. What should i do? Reply Jared 1. I tried some combination. OpenCV 2.” part. it telling me missing dll file. I also had the same problem… 6. Any help with this issue? Reply 1. I think problem is that C:/opencv/bin. 2014 at 2:57 pm If you have not resolved. Windows 7) I have searched my computer for the file “libopencv_core249. which contains the libopencv_core249.“When cmake is done we need to open a command prompt in the build directory.dll file is missing. What is that mean?I try open cmd and some command. June 14. Arun Balajee Vasudevan September 26. I have some questions.dll (my error is with 249 not 243 but this is because of the version I think). . Mingw will now start compiling OpenCV. sorry I don’t have a solution. so navigate to C:\opencv\build\x86\mingw then shift right click and choose open command window here then type “mingw32-make”. yldzmuhammed May 12. 2014 at 2:13 pm Hi.9. when you come back type “mingw32-make install” and continue with the rest of the tutorial as is.Thanks for this. I think you add the above folder link to the path in the environment variable.12. it seems like somewhere in the code there is a missing “\” between lib and opencv when the dll file is referenced. I feel you pain. Like “gcc C:\Opencv\opencv\build\x86\mingw” but return error ( http://postimg. It said that the libopencv_core243.org/image/rnqpzazvt/ ).dll DOES exist in my lib folder.When i compile your simple projects code. I looked around in some of the header files to see if I could figure out where the reference was but nothing ( I didn’t try very hard). Plus you need to type mingw32-make and not gcc Reply 1. Mingw will now start compiling OpenCV. Erik May 21. when you come back type “mingw32-make install” and continue with the rest of the tutorial as is. “When cmake is done we need to open a command prompt in the build directory. I tried some combination.org/image/rnqpzazvt/ ). Salah December 6.” part. Like “gcc C:\Opencv\opencv\build\x86\mingw” but return error ( http://postimg. And i finish every step. 2015 at 3:01 pm . May 12. it telling me missing dll file. so navigate to C:\opencv\build\x86\mingw then shift right click and choose open command window here then type “mingw32-make”.dll file is missing.– I dont understand your. this will take a bit so feel free to do something else. It said that the libopencv_core243. 2014 at 2:16 pm I think you are either missing mingw or you didn’t add it to the path.When i compile your simple projects code. 2014 at 8:22 pm when i type mingw32-make i find this error : Help me 2. What is that mean?I try open cmd and some command. What should i do? Reply kevinhughes27 1. i’m facing it right now. I think you forgot to hit the “generate”button in Cmake. so pleaze. You have only configured it but not generated it. thank you in advance . It is not already provided Reply 8. 2014 at 9:05 am hi. kh_2011 (@Kh_Fadoua) July 8. did you solve this problem ?! coz. 2014 at 2:37 pm I’ve been having this error and I can’t find a way to fix it: “The procedure entry point __gxx_personality_v0 could not be located in the dynamic link library D:\opencv\build\x86\mingw\bin\libopencv_core249. Reply 1. and i don’t really know how to fix it :/ i would be more than grateful of you can answer me asap. cristianbfristian May 15. I hope you can help me.dll. January 27.Salah.” I’ve looked everywhere for a solution and I need this working soon. 2014 at 8:10 pm i didn’t find C:\opencv\build\x86\mingw . 7. it only shows vc options i would be glad if u could help Reply pallavi 1.. arpit May 13. actually. 2015 at 5:27 am Make this folder. Worked for me last time I did it (note that I don’t recommend doing this on windows for several reasons) Try rebuilding them? Reply 1. I followed every single step of this tutorial.Reply 9.” I don’t know how to fix it and I need this working soon. 2014 at 3:36 pm Yes. cristianbf May 15. 2014 at 3:33 pm did you build your own binaries? Reply 1. cristianbf May 15. kevinhughes27 May 15. Reply kevinhughes27 1.dll. May 15. 10. 2014 at 2:40 pm I get this weird error and I can’t find a way to fix it. “The procedure entry point __gxx_personality_v0 could not be located in the dynamic link library D:\opencv\build\x86\mingw\bin\libopencv_core249. 2014 at 3:51 pm . I looks alike something that other people had. I hope you can help me. 2014 at 3:39 pm huh don’t know what to tell you. cristianbf May 15. Chandrakanth June 21. 2014 at 6:38 pm CMake Error: The source directory “C:/Libs/opencv” does not appear to contain CMakeLists. Reply 11..txt. Chaithra Bharadwaj June 6.txt 1. Maybe you should address this? Reply CMakeLists. Thanks anyway.txt June 21. CMakeLists. which path did you change brother? 15. 2014 at 10:15 pm Fixed by changing the path to C:\Libs\opencv\sources Reply 1. When clicking configure. 2014 at 10:09 pm I am getting the following during making mingw32-make. Pingback: Anonymous 13.2 Sayfa 12.huh… I rebuilded and reinstalled everything. 2014 at 6:01 am Works perfectly. June 21. . Thanks a lot dude… Reply 14. Pingback: Code::Blocks OpenCv . Kumar Gaurav Jha August 12. 2014 at 9:19 pm Having the same problem. To determine if this is the issue or if it is indeed linking you can do 2 things – first just put the image all over your code blocks project directory and see if it works or write a new hello world program that doesn’t load from file but instead does something like creates an identity matrix and prints it out. :D Reply 16. 2014 at 7:29 am Try making it again. June 23. mingw32-make[2]: *** Waiting for unfinished jobs… What could be the problem? Thanks.exe” to stop working. Incidentally his name is the same as yours. Stop. The issues is with both approachs I get “an unexpected error has caused “name_of_script.[ 44% ] mingw32-make[2]: *** Access is denied.The same thing happened to my friend and it worked. 2014 at 2:49 pm If I recall correctly images go in the Code Blocks project root. viviwaiwai . Reply Krishna Harsha 1. 2014 at 3:04 am So this is a two part question. The first part being how do you add the picture to the top of the file directories in the sample script/ I tried just creating a folder for it and just doing “C:\test”. Pi_Co July 14. . July 14.png photo. Good luck! Reply 17.” I checked and found that I have everything linked right so it leads me to the conculsion of it being an error in finding the test. Reply kevinhughes27 1. 602 s Press any key to continue. 2014 at 6:48 pm hey. 2014 at 5:15 pm Thanks a lot for the instruction. Hem July 29.July 27.dll missing. I just completed openCV 2. I had some difficulty in the first attempt because of my environment. and tested it. And also I can’t create project It shows project directory can’t be created. Program is compiled successfully but is having a message on my windows Process returned -1073741634 (0xC00000BE) execution time : 4. August 6. I’m going to install Mint :-) Best regards.9 build using MinGW 64-bit. 2014 at 7:15 pm Thanks for the guidance.bro I followed exactly same steps you have mentioned. Thanks again. Reply 18. Harrison Li August 6. Reply kevinhughes27 1. Reply 19.My codeblocks is compiling open cv programs properly but It shows a entry point error missing libstdc+ +-6. 2014 at 6:04 pm Excellent! I’m sure you’ll love it! Reply .4. By the way. Reply soon I’m really worried. After you complete the build. there will be an “install” subdir in your target. 2014 at 5:05 pm You could just select a temporary target dir outside of openCV installation. 2015 at 5:22 pm C:\opencv\build\x86\mingw\lib is empty. this makes it very difficult to install Linux alongside windows (i have tried and ended up having to reinstall the original image) – does anyone have any tips? can it be done cleanly or do I have to continue using virtual box? . Just copy them to openCV installation dir. 2014 at 8:38 pm Having the same problem as asked by Arpit above… “I didn’t find C:\opencv\build\x86\mingw\lib. Reply Harrison Li 1. AlessioMTX January 17. it will contain x64\mingw\bin and x64\mingw\lib. 2014 at 8:15 pm I agree that developing on the Linux platform makes you code better – problem is I have a desktop and laptop that came with windows 8 preinstalled. anang September 2. Kumar Gaurav Jha August 12. it only shows vc options” While adding to the linker in the last step. I don’t know why 21. :) 2. Reply 1. August 13. and if you build x64.20. 2014 at 8:57 am Oh thanks very much sir. Please guide. Thanks. DVN September 5. Thanks again….. 2014 at 5:11 pm . Instead of using “C:\opencv” as the source directory.. using “C:\opencv” as the source directory gives an errorlocation “c:\opencv” does not seem to contain Cmakelist. It should be possible though and I imagine lots of people want this kind of setup so there should be some info out there. September 5. have a google for it! Reply 22.Reply kevinhughes27 1. Reply 24. yaman September 16.helped me a lot. 2014 at 1:25 pm thanks for this tutorial.dll lib file. could it be the reaason for error lib file missing libopencv_core243.txt file.. i got stuck here for two days. shri September 10.dll Reply 23. nt September 23... 2014 at 11:12 am why here mingw lib file shows format of dll.great work.a where we have . 2014 at 8:27 pm Unfortunately I don’t have any experience with Windows 8 at all.. but i want you to note this pointin step-4.using C:\opencv\sources did worked fine. Reply 26. how do I proceed with the Step 5? Reply kevinhughes27 1. September 23. So. I tried it and it throws an error in operations. 2014 at 5:14 pm Read the update at the beginning of the tutorial – OpenCV discontinued prebuilt binaries for MinGW you have to build your own now.opencv. Thanks for the post.hpp like C:\opencv\build\include\opencv2\core\operations. mfh9498 September 24. Daniel October 3. 2014 at 1:49 pm Hello. I got this message when running the “Hello World” program on Code Blocks: the procedure entry point __gxx_personality_v0 could not be located in the dynamic link libstdc++-6.dll –> what does this mean? please advise. The instructions are all there though just keep reading Reply 25. thank you. 2014 at 1:08 pm .hpp|3869|error: expected primaryexpression before ‘)’ token| Help me out Reply 27. There are only 3 folders named vc10. vc11 & vc12.I downloaded OpenCV from http://docs.org/doc/tutorials/introduction/windows_install/windows_install.htm l#windowssetpathandenviromentvariable But I didn’t find any mingw folder in the path : C:\opencv\build\x86. 2014 at 7:03 am Hi. Dhiyagu October 3. h library.txt I found this Error “CMake Error: The source directory “C:/opencv” does not appear to contain . is it ok for me to used 32 bit mingw lib?? Reply kevinhughes27 1. but when i build the coding opencv error came out and i’m using 64 bit window. 2014 at 6:58 pm yes you can use mingw32 on x64 windows Reply 29. but I’m not sure how to add the tserial.com/id/Face-detection-andtracking-with-Arduino-and-OpenC/ The error is: ” undefined reference to Tserial::Tserial() ” If you have any clue of what the problem is. it would be wonderful! Thanks for your help! Reply 28.h library to the path.tetraedre. I’ve downloaded it frome here: http://www.instructables.Hi. I’m trying to use Code Blocks and openCV with the tserial. Everything seems fine with open cv and code blocks. but I found a problem to find CMakeLists. 2014 at 7:55 pm Thanks. Laila Atty November 18. 2014 at 3:48 pm hai thank for the tutorial i already tried.com/advanced/serial/ and the code I’m trying to use is here http://www. Fizah Razif October 10. October 10. to …opencv\source Reply 30. November 22. I fixed it by disabling WITH_IPP in CMake.I found that there is nothing generated in D:/Program Files/opencv/build/x86/mingw/bin & lib these two directory.CMakeLists. Gabriel November 22. All the best. 2014 at 2:54 pm change your source dir. even with adding set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib) set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib) set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin) command to my cmakefile. 8 [Solved] 32.txt. and recompiling. 7.txt.” how can I solve this ? Reply gabriel 1. Vista. 2015 at 2:57 pm Thank you very much for this pretty easy tutorial – I had unsuccessfully tried to install OpenCV a few months ago – but this time it worked well. Alexis February 1. Pingback: Fix Configure Error Zlib Not Installed Mingw Windows XP. Specify –help for usage. 2014 at 4:09 pm after cmake. or press the help button on the CMake GUI. I just want to point out an issue I ran into during compile-time : something like “cannot find -lRunTmChk”. from France ! . Is anyone could help me figured out why :( ? Reply 31. Welch February 19.operable program or batch file”. 2015 at 8:37 pm just add the build flag for python (I don’t remember it off the top of my head but you’ll see it in the cmake ui) Reply 34.0 only Reply kevinhughes27 1. and then used Cmake. 2015 at 8:50 pm I got this error when i try making the cmake generate: CMake Error: The source directory “C:/opencv” does not appear to contain CMakeLists.7. 2015 at 4:39 am hi. shweta February 17. 2015 at 5:14 am tell me how to install opencv2 for python version 2. Reply .txt. Reply 35. Nischal March 21. when i type “ming32-make”i in cmd(at C:\opencv\build\x86\mingw) it shows “not recognized as internal or external command.1 | 我爱源码网 36. February 17.Reply 33. or press the help button on the CMake GUI. Pingback: CMake error with OpenCV in Windows 8. Specify –help for usage. i created mingw folder at C:\opencv\build\x86 as only vc folders were present. i found an answer. 2015 at 2:46 pm Sorry mistyped the link.com/questions/27663558/opencv-win8-1mingw32-source-code-error-tbbuttoninfo-was-not-declared-in-this I hope that can help someone. Radnap March 31. The good one : http://postimg. You have written the command wrongly.org/image/mtqeh7nb7 Reply Ladinde 1. http://stackoverflow. 2015 at 12:53 pm If your problem isn’t solve. April 3. March 31.Saurabh 1. Thanks for the article ! While building binaries for MinGW i got an error when executing “mingw-32-make”. 2015 at 2:43 pm Hi. It should be “mingw32-make” Reply 37. Italian Job . April 8.org/image/mtgeh7nb7 Reply Radnap 1. 38. 2015 at 7:55 am hi. http://postimage. cpp:13: undefined reference to `cv::waitKey(int)’ Now : how is possible to have undefined reference to these functions and not to imread() that is in same opencv . 2015 at 10:09 pm Thanks for the reply. April 14.0 fails to create highgui.txt of OpenCV 3. int)’ F:/IPS_2/TESTCV/main.4.April 13.0 GCC 4. Thanks a lot for your clean tutorial. BH . I followed all steps and all seems fine with open cv and code blocks (OpenCV 3. Reply Italian Job 2. It seems that CMakeList.cpp:11: undefined reference to `cv::namedWindow(cv::String const&. Best regards Guido Reply 1. I seem to remember there was a few dlls though so look around for some other ones. April 14.11 and all works fine.0 is a beta version and something not yet works.0.cpp:12: undefined reference to `cv::imshow(cv::String const&.dll even if this option is selected in CMake. I try with Opencv 2.dll and declared in same header ? Thanks in advance for your help and sorry for my poor english! Reply kevinhughes27 1. Really I don’t know why! May be because 3. 2015 at 10:33 pm I Kevin.0.8. 2015 at 12:40 am I’m not sure its been a while now since I’ve developed with opencv. cv::_InputArray const&)’ F:/IPS_2/TESTCV/main. I will ask OpenCV and CMake guys about this problem and eventually i will report infos in this blog.1) but trying to compile the easy sample i have this error: F:/IPS_2/TESTCV/main. opencv..May 29.\lib\libopencv_core_pch_dephelp. 2015 at 9:13 am Hi While running mingw32-make i am getting this error please help. BH May 29. builded opencv2. all is ok. go there: http://code.java.h modification . June 8. reason: File exists What could I do to resolve this? Thanks! Reply 40.a'. I cannot seem to run the ming32make command successfully. This was exceptionally helpful.java. owadesign April 30.org/issues/4087 Many thanks!! Reply 41. appart from one build error about this: ‘TBBUTTONINFO’ was not declared in this scope during make.\. thanks a lot for your infos. core+Mat-jd oc. core+MatOfByte-jdoc. to do the job.java. core+CvType-jdoc. http://code. but unfortunately.4.opencv.java. core+MatOfDouble- . follow this link. core+MatOfDMatch-jdoc.9 & mingW.java. 2015 at 7:34 pm for highgui fix. just fix it with commctrl. 2015 at 6:33 pm Hey. [ 79%] Generating core+CvException-jdoc. Ishan a.exe: unable to rename ‘. 2015 at 7:32 pm Hello.org/issues/4087 39. I’m getting this error: C:\MinGW\bin\ar.. java.java.make:4518: recipe for target ‘modu les/java/core+CvException-jdoc.java. thanks!!! . features2d+DMatch-jdoc.java. core+MatOfPoint2f-jdoc. core+MatOfRect-jdoc.java.but when i compile the project it reports no error or warning.java . core+MatO fPoint3-jdoc.02).java.dir\build. gpu+Gpu-jdoc. core+MatOfPoint3f-jdoc. installing opencv on windows(W32) to be used with code blocks up vote 2 down vote favorite i am trying to use opencv library with code blocks(8.java. core+Scalar-jdoc.java. core+Size-jdoc. features2d+KeyPoint-jdoc.java.com/wiki/CodeBlocks tutorial as well.java. Reply Ishan a.java.java.java. 1.i have gone through http://opencv. core+Range-jdoc.java.java. when i include the headers and link the library its all fine. June 8.java] Error 1 CMakeFiles\Makefile2:5942: recipe for target ‘modules/java/CMakeFiles/opencv_jav a.java.1. core+Rect-jdoc. core+MatOfKeyPo int-jdoc. core+MatOfPoint-jdoc.java. gpu+TargetArchs-jdoc.java. core+P oint-jdoc.jav a.java. core+MatOfFloa t6-jdoc.willowgarage.dir/all’ failed mingw32-make[1]: *** [modules/java/CMakeFiles/opencv_java.java.it just says exit with status 1.jdoc.i have installed opencv2. core+T ermCriteria-jdoc. core+MatOfInt-jdoc.java’ failed mingw32-make[2]: *** [modules/java/core+CvException-jdoc. i want to know if anyone who has used opencv with code blocks and can please help me out of this situation.dir/all] Error 2 Makefile:135: recipe for target ‘all’ failed mingw32-make: *** [all] Error 2 I am unable resolve this please help. 2015 at 9:52 am Resolved it turning java interface off. core+RotatedRect-jdoc. core+MatOfFloat-jdoc.java. core+Point3-jdoc.java. utils +Converters-jdoc. gpu+DeviceInfo-jdoc. core+MatOfFloat4-jdoc.java modules\java\CMakeFiles\opencv_java.java. core+MatOfInt4-jdoc. and a non-compiled one. click on Settings (In the File Menu). select the linker tab. Browse to the COMPILED version of the library. select the lib folder and click OK. select OpenCV.org/ 2) After your library is compiled you should have two different OpenCV libraries .blogspot. which is under the Search Directories tab. Under Settings. In the lib folder select all the libraries. Click Add. In the non-compiled directory. 3)In Code Blocks. Make sure to only select only the dynamic library files (. In the compiled directory select lib. Under the include folder.c++ configuration opencv codeblocks asked Oct 9 '10 at 5:58 shareimprove this question edited Oct 9 '10 at 16:43 Ashish Yadav 71811122 1 there is a blog post opensourcecollection.. Click Add.cmake. http://www. Browse to your NON-COMPILED version of the library. 4)Select the Search Directories tab. select the include folder. 6) Go to the linker settings tab in codeblocks. Click on add and this time browse to your COMPILED version of the library.Select the compiler tab under search directories.com/2011/04/… just in case you haven't seen yet – Andrey May 20 '11 at 13:15 add a comment 1 Answer active oldest votes up vote 0 I had this exact same problem a couple of weeks ago and couldn't find an answer down vote anywhere ! After messing around with it. accepted 1) Compile the library using Cmake.dylib extention) . select Compiler and Debugger. Click OK 5)In codeblocks. I found out exactly how to do it.a compiled one. In the compiled directory. everything that Qt uses (e.exe . so I've only made a folder "Programs" in which everything important is installed) 3. Sources of information are mainly these http://www.7) Codeblocks is setup! 8) Run your project and it should work fine. Download: cmake-2. (But I don't want different program files to accumulate directly on C.g.) Hopefully I mentioned everything from the very beginning.com/watch?v=dgcXYQijV6c This is the summation of what I think one should/can do.1 for Windows 32-bit (MinGW 4. but it just doesn't work and sometimes it still remains unanswered.Install for all users (this can be in Program Files) 4. the aim is to write a very clear tutorial. "Program Files" is wrong. Feel free to ask for more help if you are still having problems. (And now it works for me. extract to: C:\Programs\opencv24 . I have already MS Visual Studio 2010 Professional installed.0.7. Installation of OpenCV for QtCreator up vote 20 down vote favorite 16 1. just a mention 2.name/opencvCookbook/chap1s1_2. 823 MB) 2.2-win32-x86.0.e. add another folder "opencv_bin". (I have a free licence as a student) .exe. Download: OpenCV-2.i.1 Install: Warning.I think this is not necessary. OpenCV) must be in directories that don't contain white-spaces in their names. Download: Qt 5.4.it'll create a dir "opencv".laganiere. Now it looks like this: C:\Programs\opencv24\opencv* .shtml http://www. shareimprove this answer How to link opencv in QtCreator and use Qt library This question must be duplicate many times.10.8. .youtube. cd to the directory where are the builds (opencv_bin) and type mingw32-make 8. 6. 6.exe. When the process ends after a long time. WITH_IPP. C:\Programs\opencv24\opencv 6.exe.4 Many red lines will appear To the search field enter one by one: WITH_QT. //cvHello. WITH_CUDA .5 click configure and keep clicking configure until all red lines are gone. Set PATH environment variable. Start cmake-gui. Add into Path variable the path to the QtCreator/bin C:\Programs\Qt\Qt5.3 click configure: o Choose MinGW Makefiles and Specify native compilers.2 binaries: set the opencv_bin dir.1\Tools\MinGW\bin.click and enter a text "Debug" (without quotes).C:\Programs\opencv24\opencv_bin 5. click finish 6. Go to the terminal (~command prompt).1 source code: set the default dir for OpenCV.1\Tools\QtCreator\bin Now I have created a new console app in QtCreator. C:/Programs/Qt/Qt5.0. type mingw32-make install 9.0. WITH_CUDA. Clear the text from the Search field.1/Tools/MinGW/bin/gcc.must be unselected o CMAKE_BUILD_TYPE . e.0. C:\Programs\Qt\Qt5.must be selected.0. click next o Field C is for gcc. so that there be a link to MinGW compiler. then click generate and close cmake-gui.1/Tools/MinGW/bin/g++. WITH_TBB.exe Field fortran can be empty.g.pro QT += core QT -= gui TARGET = cvHello CONFIG += console CONFIG -= app_bundle . WITH_IPP. CMAKE_BUILD_TYPE o o WITH_QT .exe o Field C++ is for g++. C:\Programs\copencv24\opencv_bin 6.exe 6.exe 7. C:/Programs/Qt/Qt5. WITH_TBB. still pursuing it – inblueswithu Nov 19 '14 at 23:38 In CMake I keep getting this error: "Found unsuitable Qt version "" from NOTFOUND.hpp" #include "opencv/cv.. int main() { cout << "Hello World!" << endl.hpp" #include "opencv2/highgui/highgui. Check the .TEMPLATE = app INCLUDEPATH += C:/Programs/opencv24/opencv_bin2/install/include LIBS += "C:/Programs/opencv24/opencv_bin2/bin/*.cpp OTHER_FILES += \ img. cvNamedWindow("hello").x" – Birger Skogeng Pedersen Jan 30 at 10:39 show 1 more comment .mat).JPG And the main file: //main.pro file.JPG"). mat = cv::imread("img. return 0. this code requires Qt 4. – karlphillip Apr 9 '13 at 2:28 I had to use "CMAKE_BUILD_TYPE = Release" rather than Debug as given in here .h" using namespace std.cpp #include <iostream> #include "opencv2/core/core. cv::Mat mat. – inblueswithu Nov 17 '14 at 18:44 Anyways.. } c++ qt opencv qt-creator asked Apr 8 '13 at 14:34 shareimprove this question edited Jul 1 '13 at 15:49 Daniel Katz 3691417 I define LIBS here so that I use a directory opencv_bin2. cvWaitKey(0)..your first source.dll" SOURCES += main. because I rebuilt opencv several times. I could not get this to working!! Not sure. – Daniel Katz Apr 8 '13 at 22:43 My project cvImage is available on GitHub and demonstrates how to build a 2 cross-platform application with Qt/OpenCV. cv::imshow("hello". :) answered Apr 8 '13 at 22:37 shareimprove this answer edited Apr 8 '13 at 22:57 Daniel Katz 3691417 I still don't know what was wrong with the original LIBS += "C:/Programs/opencv24/opencv_bin2/bin/*. is wrong? – Daniel Katz Apr 9 '13 at 18:10 Wajdy: Even if I use the libs in install\lib it cannot find the .. and dynamic linking is necessary if one can't pay Qt commercial fees.NET installed. – Daniel Katz Apr 12 '13 at 18:54 Following this tutorial with OpenCV 2. When adjusting this question I had to try all ways. – DanyAlejandro Aug 3 '13 at 21:22 @daniel-katz I'm interested in this topic since I'm building an app with Qt and OpenCV..pro looks like the one in this answer.a files though I have a correct path set. how to define LIBS. but rather any files within a directory lib? Probably those in opencv_bin/lib and not opencv_bin/install/lib. My ..2 was the only way I was able to make this work.cannot find those dlls. to -LC:\\Programs\\opencv24\\opencv_bin2\\lib \ . Can we get in contact? – DanyAlejandro Aug 3 '13 at 21:38 @DanyAlejandro I'm sorry but I myself am not able to link anything . This is how it works finally: up vote 5 down vote accepted LIBS += -LC:\\Programs\\opencv24\\opencv_bin2\\bin \ libopencv_core240d \ libopencv_highgui240d \ libopencv_imgproc240d \ libopencv_features2d240d \ libopencv_calib3d240d \ Btw if I've made any grammar mistakes.libs because it contain information about functions inside DLL.dll" – Daniel Katz Apr 8 '13 at 23:01 you need to add .1 Answer active oldest votes Finally I am starting to be happy. and this information is needed when building the project.7.exe. – Daniel Katz Apr 9 '13 at 18:25 @Wajdy: I've found out that if I use the other bin dir in install\bin. – Wajdy Essam Apr 9 '13 at 8:20 Wajdy: Do you mean not an extention . .46 and Qt Creator 2. Listing them manually helped. then it doesn't work.lib or .. it works too.dll.. I am sorry for my english.libs. I don't have . But in both ways it doesn't work when I start the program by double click on the . Are you saying that the solution with \\bin \ . at first I wrote them somehow wrongly.. But when I simply change -LC:\\Programs\\opencv24\\opencv_bin2\\bin \ . so your exe will run then check those information and then load needed DLL. 3. – CroCo Mar 30 '14 at 2:52 @DanielKatz. It worked with me as a charm.7. in details. Please refer to the OpenCV Cookbook for more details. We will also use CMake which was at version 2. In addition.1.1). Finally. The installation has been done on Windows 7.3 (Qt Creator 2. the latest Qt version was 4.dynamically. – Daniel Katz Aug 13 '13 at 12:38 @DanielKatz. At the time of writing this recipe. a friendly IDE for developing C++ projects.com/questions/12123479/… – CroCo Mar 30 '14 at 2:56 add a comment 1. it comes with Qt Creator. Once installed.1 (August 2011).8. It's the answer for your question. Playing with Images 1. compile the OpenCV library for it and finally run your first OpenCV application. The first step is obviously to download Qt. stackoverflow. how to install Qt.2 Installing the OpenCV Library for Qt The Qt SDK is probably the best tool to build cross-platform OpenCV applications. it offers nice UI tools and a complete API. 1. This recipe will show you. Simply run the installer with all default option.2. Current version of OpenCV was 2. check out this link. I needed at least to make it work to do a homework.5. . Though I'd be still very glad if I knew how to do it. thank you so much for being helpful and informative. you can run Qt Creator. place it in the location of your choice and click Next. We will call our project myHelloWorld.2. We create a Desktop application. . Click on Create Project.. and choose Qt Console Application.. Lets start by creating a simple Hello World application on the Windows console. just to make sure everyting is working properly. A default project is then created. . This one does nothing except launching the concole. Click on the green arrow and you will see it. Let�s now write a true �Hello World� application. int main() { 7. 5. char var. } And click again on the green arrow to run the new code. 11. 10. #include <iostream> 6.3. 9. std::cout << "Hello my world!". . 4. std::cin >> var. Simply copy and paste the following C++ code over the preceding one. return 1. 8. Let's now proceed to OpenCV installation.com.1.If you obtain the result above. To download the OpenCV library. This way. 12. if you use a version control software such as Subversion in which you submit only the source directory. You'll find there the current release version in a downloadable zip file or in a Windows install. This is very useful. then everything is working well. the source code and the binary files does not get mixed together. Note that Qt automatically created a directory called myHelloWorld-build-desktop where it puts all the compiled and executable files.3. In the case of version 2.willowgarage. a superpack installer is available: Run it and extract it to the directory of your choice: . just go to the OpenCV official website at opencv. They are located in C:\QtSDK\mingw\bin. The next step is to compile the library for the compiler you want to use. Indeed. let's include the folder that contains the make command in our Path environment variable. you select the Advanced tab. here it will be the basic mingw/g++ compiler that Qt installed by default. In the Advanced system settings menu. 13. Just before we do this. you now have all OpenCV source files in the specified directory. . Goto to your Control Panel (from the Start menu) and to the System menu. compiling the library will be done using this make utility command that Qt installed together with the compilers themselves.Once this is done. .Click on Environment Variables. .. In the User variables box.. If you want it to be valid for all users of your system then define it in the System variables box.. By setting it in the user variables.. .. this definition is available to you only. If it is there. to create it.. look for the PATH variable. click on Edit. if not click on New. This variable contains all the folder Windows will look in when you type a command. To build the library from the source files.14. OpenCV uses CMake. . Go to cmake. We need to install CMake. a cross-platform and open source tool designed to build library packages.org and download the Windows Win32 Installer. Once CMake installed.15. you can start the gui-based application (cmake-gui) . In our case. This will create the output directory. . You then specify the compilers that will generate the project. Click on Configure. specify the directory containing the source code and the one that will contain the builds. they are the compilers of MinGW installed by default by Qt.In CMake. .These are gcc and g++. CMake now displays the different build options. here Release. at the end. If you wish. you can repeat the same process with the Debug mode. .Select the build type. Since we want to use Qt. we also select the WITH_QT option . .Once your options selected. you click on Configure again. And you click on Generate to complete the installation. . you are ready to compile the OpenCV library. Now that you have completed the installation. Type mingw32-make .16. Start the Windows cmd console and go to the directory where you installed your builds. ..Building everything will take time. you type mingw32-make install . Once this built completed. This last step will install the library and the include files in the install directory. you can rename this directory as release since you ask CMake to build a Release install We are done with the installation! Congratulations! 17. Before we build our first OpenCV project.3. you need to tell your system where to find the OpenCV dlls. they are in C:\OpenCV2. Path . First. From our installation process. Note that for clarity.1\install\bin. we need to add a few more folders to the environment variable. The Qt dlls are also required. you should find them at C:\QtSDK\QtCreator\bin 18. Start Qt and create a new Qt Console Application project called here myFirstOpenCVProject. . Goto to the projects menu and select the Release build configuration. Our last step is to build a simple OpenCV project to make sure everything is working properly. dll \ -lopencv_features2d231.dll \ -lopencv_imgproc231.Our test program will simply open and display an image: #include <opencv2/core/core.hpp> int main() { // read an image cv::Mat image= cv::imread("img. // wait key for 5000 ms cv::waitKey(5000).3.dll \ -lopencv_calib3d231.dll You basically just have to add the last two definitions to the existing project: . // show the image on window cv::imshow("My Image". // create image window named "My Image" cv::namedWindow("My Image").hpp> #include <opencv2/highgui/highgui. } The project file must specify the OpenCV headers and libraries locations: QT += core QT -= gui TARGET = myFirstOpenCVProject CONFIG += console CONFIG -= app_bundle TEMPLATE = app SOURCES += main.cpp INCLUDEPATH += C:\\OpenCV-2. return 1.1\\install\\include LIBS += -LC:\\OpenCV-2.1\\install\\lib \ -lopencv_core231.dll \ -lopencv_highgui231.jpg"). image).3. .jpg in your myFirstOpenCVProjectbuild-desktop directory that is the default directory when you run your project from Qt.Make sure you have an image called img. .. you can do much more with OpenCV. Wow! But this is just the beginning.and you should see the image displayed. Good luck! .
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