OpenCV Basics - 11 - Building OpenCV + Contribute with CMake

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In this video, rather than use the downloaded OpenCV libraries we build them ourselves using CMake. In addition, we show how to include the optional contribute libraries.
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[@veyselaksoy3470]

Hello, how do you add path to sytem and also how do you do set up for VC++, Linker and C++ in properties section? I am not able to do. Please help me.

[@theorangecoco]

Where is the rest of the video?

[@SuhailPrasathong]

Hi! Thanks for the awesome tutorial. I have a quick question. When I open the the OpenCV solution file after doing the cmake stuff, I can't seem to find the ALL_BUILD thing. There's one that's inside the cmake folder but not outside. When I run that, the results are always erroneous. Any suggestions? Also, my lib file is generating 340d pdb's and .lib's instead of 310d (ex. opencv_aruco340d.lib). Is that a problem?

[@Yaroslav463]

My ALL_BUILD were placed in the CMakeTargets, is this the same file ?

[@vu7367]

He has a newer video right now with VisualStudio (vc15) 2017. There he uses the ALL_BUILD inside the CMakeTargets-Folder. kzbin.info/www/bejne/eKqQgX6YjKmNhM0

[@dillon1977]

I have only one issue when I build "ALL_BUILD" CmakeTarget on Release building. Project opencv_gapi it doesn't find \lib\Release\ade.lib (because doesn't exist). Suggestions?

[@fatihfuad1909]

hi, it worked for me thank you, but can i know what happened if i delete the " build " folder after everything is done? I still can use cv2 module or not?

[@sesimgulgec7761]

Hi George! This is a greatest video for opencv_contrib ever! But I need to ask you something. When I install everything and go to the install/x64/vc14/lib folder. All the libraries are ".lib" they are not ".dll " . Will it be a problem for my apps or when I run the code?

[@dnanh5919]

3:58 why did your configuration has many BUILD_opencv_cuda...., mine has not anyone, so when I ran opencv.sln, many errors occured, then I followed u to fix them by unselecting these cuda..., but nothing named cuda..., what can I do to fix this problem??HELP ME

[@patrinavarro4696]

It all went nicely, although when I built the INSTALL project it didnt took so long. Whats more, I do not have the contribute folders in the include folder from the install one. Do you have any idea why? The lib included everything in the DEBUG and REALEASE.

[@ibrahimyazicii]

Hello. I checked everything but "world" under build options in cmake and configure and generate. The problem is that I do not have ALL BUILD option. I only have all build under cmake.

[@BusideaList]

Bro, i have the same problem, have u solved this problem

[@ibrahimyazicii]

no i switched to gcc in ubuntu

[@tusharjain7554]

great tutorial it really helped me a lot.

[@sayatdakarimov4901]

Hello! Thank you for video. But when you started "how to connect this library to Visual Studio" you were using prebuilt one. So I don't really understand how to connect my library to Visual Studio. Can you help me with this?

[@ulmaxy]

Thank you so much! Been looking for something like this for quite a long time

[@hongentsai4489]

Hi,after I finished the steps and I got all the *.lib and *.dll, I still have no header file, my include folder is still empty, what should I do?

[@xgong1574]

if you don't have opencv_world being built, then what do you include for additional dependencies?

[@karthikhanasi6052]

Hi, not able to get the bin, sample folder in install folder what is the Reason? I want these extra files for java project will these work?

[@jingjingwang3]

HI I'm using Microsoft visual studio 2013 and I've done all the part with cmake but when I'm building the ALL_BUILD file, it didn't work. so I notice that the version is win32 then I changed it into x64 and all the individual file's platform into x64 but then errors comes out say that module machine type 'x64' conflicts with target machine type 'x86'. However my machine is definitely 64bit and I checked the advanced in Linker option, the Target machine is definitely x64 as well. I don't know what's wrong, please help :(

[@GeorgeLecakes]

The machine part shouldn't matter. When you built with 2013 version I am assuming you chose the 2013 compiler to do the building for you, correct and not something else?

[@jingjingwang3]

thanks very much, yes that's the problem. I chose 2013 in the cmake config but instead I should chose 2013 win64. And the problem solved now. Thanks a lot!

[@shreyajain1617]

CONFIGURATION IS NOT SUPPORTED: validate setupvars script in install directory!! I am getting this error while I tried to configure opencv-contrib folder. Can someone help me on this?

[@erdalgenc7281]

Hey there, very useful content. The problem is whenever i try to use build "INSTALL" in Release, there is an error called "MSB3070 The Command setlocal". I have searched the error and it is happening when there is no permission to write the file such as C:/ProgramFiles. However, i am trying to set my enviroment into D:\. It is stilll not working. Can you Help me?

[@rnusiclover]

I keep on getting 'INTER_LINEAR_EXACT' undeclared identifier when I try and build the ALL_BUILD project. Any idea what would be causing it?

[@tanelsirp5977]

You probably downloaded a newer version of contrib than opencv itself (note I didn't watch the vid, I'm just looking at your comment)

[@helloankur2009]

after successful this , guide me where i can use cv.cuda? is there any way we can detect face by use cuda ?

[@GeorgeLecakes]

Read the documentation. I don't have videos on how to do that.

[@miklosvincze2251]

Hi! This tutorial was good! I have only one question at the end of the video. I want to implement these new Opencv modules into Netbeans because I develop in java. Can you tell me how sould I make it? Thanks! :)

[@josepabloariasvalverde2745]

Hi. Thanks for the video, it was really helpful. I am working with java and i need the .jar file and the dll file with the new modules but i cannot find them in the folder created after the install. Do i need to do some extra step?

[@GeorgeLecakes]

Jose, I have not done this for Java before so I'm not sure where the files will end up. Sorry I can't be of more help.

[@BhanuChander-SYL]

Thank you, this is simple ! But even after building this and ensuring, like you mentioned in the video, I'm not able to run cv2 in python idle and I observe that all the files in the opencv2 folder are c/c++ Header type. How to make this work for Python 2.7 too ?

[@GeorgeLecakes]

+Bhanu Chander these tutorials are only for c++, I don't have an immediate answer for how to build the python libraries or wrappers necessary to use the contribute modules.

[@BhanuChander-SYL]

Ohh ok, anytime if you come across Python installation, please share that too.

[@vtcano1995]

Once i have done all this, how can i import this library in Visual Studio to get the aruco function? thkan you. great channel btw

[@leonardopatricio1]

Gracias tu vídeo me fue de mucha ayuda, antes que este vi otros tres vídeos y ninguno me sirvió Thank you,

[@dendoussin2501]

HI George, brilliant video, followed it and seems to have all worked including building the versions in Visual Studio. Problem comes when i open up a project using Feature Detection as an error comes up when i run it saying it cant find a opencv_xfeatures2d331d.dll file. Yet I followed your basic settings for configuration file settings.

[@pingilianvesh8305]

Thanks for the video George, It really helped me.

[@mateuszuliani2030]

can I use this process for python as well?

[@sandeepravi8532]

Hey thanks a lot for this tutorial !!! Great help.. I had one problem - I am not seeing the install folder getting created in the directory. The source is getting built with no errors.. in debug and release mode

[@techtalk8570]

Thank you for the great tutorials. Cmake is giving me the following error.I shall be thankful to your help The CXX compiler identification is unknown The C compiler identification is unknown CMake Error at CMakeLists.txt:112 (project): No CMAKE_CXX_COMPILER could be found. CMake Error at CMakeLists.txt:112 (project): No CMAKE_C_COMPILER could be found.

[@PetrNoga]

Hello is there any way how to used cmake gui configurate for Android? i need to link aruco libraries :/ Btw nice video :)

[@objecttracking31]

Thanks, but i have a problem when i am generating the this error is occured. Error in configuration process files may be inavlid. And Cmake also throw this error: configuring incomplete, errors occured! See also E:/OPEN_CV_DIR/opencv3/CMakeFiles/CMakeOutput.log Any help please. Note:I have installed Visual Studio 2015 Enterprise , and i have slected the option in CMake Visual Studio 15 2017 Win64

[@GeorgeLecakes]

What does the log say?

[@sarahwimboeck]

Same problem here. I use visual studio 2017 ARM as compiler, the others does not work at all and get the same error. The version of cmake is 3.10.0-rc4. I have got several warnings D9002 unkown option ... will be ignored (freely translated from german) and errors c1189 (.... is missing). Can you help me?

[@luisff7030]

ARM is for ARM processor (RISC instructions), they are use in smartphones, tablets and some low cost computer like raspberry-pi. Desktop intel i-core processors and AMD are CISC processors. They are the default option and use to run in you desktop PC.

[@brenomedeirosdeoliveira4090]

Hey guys, I had this issue, and realized that I made two mistakes: 1) When you chose the "modules" folder, make sure you are choosing the 'modules' folder inside "opencv_contrib" folder, and not "opencv3". 2) And then I redownloaded the last version of the opencv and opencv_contrib repositories(both of the same branch named '3.4'). Solved like a Charm! :D

[@Corbinren]

This video was very clear but it does not flow well into video 1. How do go from a custom build without opencv_world to visual studio. Every tutorial I've found only deals with the standard installs and I am, unfortunately, not experienced enough yet to know how to deal with this approach. When I attempt to set up the system variable it all falls apart for me.

[@df0s]

Same :( Were you able to overcome this problem already? It's frustrating

[@Corbinren]

Unfortunately no. I spent a weekend on it but then had to move on to other projects. I would like to return to it when I find some time and hope to find a solution to this issue.

[@EMVM9000]

hey i have a question

[@anamisiego883]

You do not enter opencv_world. But then in the video "OpenCV Basics - 01", you use opencv_world. How do you introduce it?

[@GeorgeLecakes]

+Ana Misiego in the early episodes we used opencv World which was provided to us through the basic compilation however later on I introduced us making our own version through make. I know that I was unable to get opencv world to compile correctly in my videos and unfortunately I still have problems with that.

[@anamisiego883]

in what video i can see that?

[@anamisiego883]

maybe in OpenCV Basics 15? Maybe Opencv_World is like a resume of libraries, and without it, you need all de libraies manually in input linker?

[@GeorgeLecakes]

+Ana Misiego yes

[@anamisiego883]

it works perfectly! Thanks for your help :)

[@shubhammittal3529]

thank your sir :). very good understandable video

[@TheJpsb]

Thanks a lot!!!!!

[@vinodsinghk]

Thanks for the Video

[@gabriel1991]

I tryed this but it didn't work. I don't have ALL_BUILD in my files... Can someone help me?

[@mateuszuliani2030]

same here

[@DaniBZone]

@Varun Gonsalves you guys found the solution?

[@ratrickfull]

Excellent video...!!!

[@darkside3ng]

Thank you so much for your explanation .... :)

[@GeorgeLecakes]

+user123 glad to help. Thanks for the positive feedback.

[@iqbalwidodo496]

hello guys, is there any way to make .dll library from opencv contrib? i was successfully made it using simple opencv .dll but without contrib extension. thank you love the tutorial bro, really help me

[@vu7367]

Hi, was there an solution? I also only got the opencv.dll's but not these of the contribs :/

[@marisolsierra5918]

It works!! :D

[@Lukaspalukamer]

It is verry helpfull ;)

[@TylerMatthewHarris]

Thanks!!

[@fatihozturk6521]

thank you

[@bendm6329]

For those finding No ALL_Build problem, please go check his new video. kzbin.info/www/bejne/eKqQgX6YjKmNhM0 OpenCV 4 Building with CMake & Visual Studio 2017 Setup

[@joachimkaddah6040]

Severity Code Description Project File Line Suppression State Error MSB3073 The command "setlocal "C:\Program Files\CMake\bin\cmake.exe" -DBUILD_TYPE=Debug -P cmake_install.cmake if %errorlevel% neq 0 goto :cmEnd :cmEnd endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone :cmErrorLevel exit /b %1 :cmDone if %errorlevel% neq 0 goto :VCEnd :VCEnd" exited with code 1. INSTALL C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.CppCommon.targets 133

[@atishaybajpai1966]

I am getting the same error. Have you found a solution for it? Please let me know as this has been really frustrating.

[@emanuelclur2811]

Avengers Age of Ultron totally legal downloaded xd

[@GeorgeLecakes]

Finally, after years, someone saw it!

[@PumpiPie]

@@GeorgeLecakes xD