How to Build and Install OpenCV from Source | Using Visual Studio and CMake | Computer Vision
Why Stack Overflow recommends it
Stack Overflow users link it when they need step-by-step help building OpenCV, including the contrib modules, with CMake and Visual Studio on Windows.
Recommended by 2 people across 2 different months, 2020 to 2024.
What it is
A 12-minute Windows tutorial from The AI Guy on building and installing OpenCV from source. It covers installing CMake and Visual Studio, configuring and generating the build, compiling the INSTALL target, and checking that the result works.
What people said
Recommends SAUL · 2020-06 · Stack Overflow · on “ERROR: No matching distribution found for opencv-contrib-python-nonfree”
I was not able to use PYTHON on my computer but you can see the video. C++: I have solved it by installing Cmake, and later using opencv_master and opencv_contrib_master. You have to install Cmake and add it to the Path directories on windows. Later you will have to add opencv_master to Cmake an configure it, check none error is matched, later you have to add opencv_contrib_master/include to EXTRA_MODULES, you have to choice NONFREE and WORLD option, configure and generate. Thats the most important, you can use the next video. It work for me, just remember to use the instrucctions above. [this video]
Recommends Pushkar · 2024-04 · Stack Overflow · on “How to make the Java JAR file of extra_module of OpenCv and merge it with base OpenCv module”
After searching for more than 5 hours , i got video for c++ and java you can see both videos and apply same logic for java - just check on java classes , because we need JAR file . this are links to guide as how to make JAR file of Extra_module of face with base module of OpenCV.(needs Visual studio for it ). [this video] [LINK]
Cites PCG · 2020-05 · Stack Overflow · on “Why Python does not see newly built CV2 package in Windows 10 PC?”
I am following step by step instructions from " How to Build and Install OpenCV from Source [this video] ". I was able to get everything installed and compiled properly in Visual studio. When I built "INSTALL" project, it was completed as follows with no issues. [LINK] I added the path "C:\object_detector\opencv-4.3.0\build\install\x64\vc16\bin" to Environment settings. CMAKE Python path is the same version I am running when testing the CV2. When I issue "import cv2" at Python prompt, I get error : "No module name cv2" When I run opencv_version.exe in the new build folder shows exact OpenCV version I built. This suggests the built was successful. Why Python does not see my build ? [LINK]