Download CMake. Open CMake and use settings below. Then click Configure.

Choose Visual Studio 11 Win64. Click Finish.

After a while, click Configure again. Wait a moment and then click Generate.

Close CMake and go to C:\MyOpenCV, open OpenCV.sln.

Choose Debug.

Right click INSTALL. And choose Build.

After a long period of time, go back and choose Release. Similarly, right click INSTALL. And choose Build.

Close Visual Studio 2012.

Copy C:\MyOpenCV\install folder to C:\OpenCV.

So now you have a C:\OpenCV\install folder. You can delete C:\MyOpenCV whole folder if you want.

Second

Open Windows Explorer. Click on Computer and then System properties.

Choose Advanced system settings.

Click Environment Variables…

Add only this to Environment Variables -> System variables -> Path

C:\OpenCV\install\bin

Third

After creating your own project in Visual Studio 2012…

Build menu -> Configuration Manager

Change the Active solution platform. Click on Win32, Select New…. Use the settings below and click OK.

Fourth

For Release:

View -> Property Manager

Double click Release | x64

1. C/C++ -> General -> Additional Include Directories

C:\OpenCV\build\include\opencv

C:\OpenCV\build\include

1. Linker -> General -> Additional Library Directories

C:\OpenCV\build\x64\vc10\lib

1. Linker -> Input -> Additional Dependencies

opencv_calib3d243.lib

opencv_contrib243.lib

opencv_core243.lib

opencv_features2d243.lib

opencv_flann243.lib

opencv_gpu243.lib

opencv_haartraining_engine.lib

opencv_highgui243.lib

opencv_imgproc243.lib

opencv_legacy243.lib

opencv_ml243.lib

opencv_nonfree243.lib

opencv_objdetect243.lib

opencv_photo243.lib

opencv_stitching243.lib

opencv_ts243.lib

opencv_video243.lib

opencv_videostab243.lib

For Debug:

View -> Property Manager

Double click Debug | x64

1. C/C++ -> General -> Additional Include Directories

C:\OpenCV\build\include\opencv

C:\OpenCV\build\include

1. Linker -> General -> Additional Library Directories

C:\OpenCV\build\x64\vc10\lib

1. Linker -> Input -> Additional Dependencies

opencv_calib3d243d.lib

opencv_contrib243d.lib

opencv_core243d.lib

opencv_features2d243d.lib

opencv_flann243d.lib

opencv_gpu243d.lib

opencv_haartraining_engined.lib

opencv_highgui243d.lib

opencv_imgproc243d.lib

opencv_legacy243d.lib

opencv_ml243d.lib

opencv_nonfree243d.lib

opencv_objdetect243d.lib

opencv_photo243d.lib

opencv_stitching243d.lib

opencv_ts243d.lib

opencv_video243d.lib

opencv_videostab243d.lib

Note the file names has extra “d” which means debug

Thêm thư viện:

As the error states, you need to use fopen_s, or disable the security exception errors via adding #define _CRT_SECURE_NO_DEPRECATE before your include.