What is the Difference between Installation OpenCV by Using the Pre-built Libraries & by Making Own Libraries from the Source Files ?

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Hello Mr.Daniil,

First many thanks 4 your reply.

So I have simple problem. When we install OpenCV using pre-built libraries;

1.First we have to install CMAKE.

2.Then Extract OpenCV and configure opencv with visual studio using CMAKE.

3.Next add OpenCV library to the system path.

Are these steps correct?..So is the use of the CMAKE is configure opencv with Visual Studio?What is the use of CMAKE?

I must be thankful to u if u kindly answer these questions.

Thank U.

You should not use cmake for pre-built libs.You just need to extract pre-built OpenCV libs, and then you can use them in Visual Studio project. Official installation guide for this case: http://docs.opencv.org/2.4.3/doc/tutorials/introduction/windows_install/windows_install.html#installation-by-using-the-pre-built-libraries, build applications with OpenCV inside the Microsoft Visual Studio: http://docs.opencv.org/2.4.3/doc/tutorials/introduction/windows_visual_studio_Opencv/windows_visual_studio_Opencv.html#windows-visual-studio-how-to. Hope, this helps.

Thanks a lot Daniil

Hello Mr Daniil,

I downloaded OpenCV-2.4.2 and I couldn't find any exe(auto run) file there.How ever I extracted that in to my C:\ directory and followed the process in this video>> https://www.youtube.com/watch?v=cgo0UitHfp8&feature=plcp

I have VS 2008 version. According to the video First I Added OpenCV to system variables and next build Visual Studio project. Added all the libraries and completed according to the video.

But When I debug my project it says>> The application has failed to start because tbb_debug.dll was not found.

So Mr Daniil, 1)Are there any wrong in my installation or this video? 2)Did I completed the installation process correct?

Thank U.

I'm think installation is ok, and process correct. You should add tbb_debug.dll as other OpenCV libs to your project properties (this step ~ 4.45 min of video). TBB is a multithreading library, you should download it separately (if you don't have it). P.S. You should ask a new question, not a comment.

Thanks Daniil..

GPU module is not working in pre-build libs?

Is there a repository of pre built OpenCV (I mean someone has already compiled them)?