How to Build and Install OpenCV from Source | Using Visual Studio and CMake | Computer Vision

How to Build and Install OpenCV from Source | Using Visual Studio and CMake - In this video I will show you how build and install OpenCV (Open Source Computer Vision) from source code. This will allow you to use OpenCV with every programming language! OpenCV is a library for computer vision and machine learning that contains over 2500 algorithms for you to use. OpenCV gives you the tools to perform facial detection, object identification, and much more.

#opencv #computervision #tutorial

In this video I cover:
1. Installing CMake so you can generate binary source code.
2. Installing Visual Studio so you can build source code.
3. Building and Installing OpenCV from source and verifying it works.

If you enjoyed the video, toss it a like! 👍

Thanks so much for watching!
- The AI Guy

[TheAIGuy]

Let me know what other OpenCV or Computer Vision videos you would like to see!

[raflesia]

while more i learn this, at this time more i love it... :D thanks so much.(Your channel is Specialist)

[omkargosavi]

What a wonderful tutorial... Amazing... Thank you Man... Really helpful.

[joycechen]

For anyone thats getting errors on building, try to run the cmake throught admin. It worked for me!

[areennasrawi]

Thanks a lot for your help, I did all the steps and cv2 appeared in the cmd screen but not in the pycharm. What should I do?

[kevinwu]

Thank you. This is really helpful, and I really appreciate it.

[marsinsmusic]

top guidance! thank you so much! Greately appreciated!

[PUBUDUCG]

I am new to this and managed to get everything compiled VS2019. Its shows all succeeded but it still could not be accessed from Python. I removed all old opencv versions and Python and included a fresh copy of Python before Cmake steps. Whenever I import cv2, says it does not available. What communication happens with Python when installing the project in VS build ? site packages folder in Python does not have any reference to OpenCV. I added build/install folder path in windows path as well.

My questions here is how does python knows if the Cv2 library is installed ?.

[fatihfuad]

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?

[sashthecreator]

after the second config on cmake i got a single red line on 'BUILD_opencv_bgsegm' please help?

[sesgiog]

If I try activating the CUDA for the GPU Acceleration via configuring it, should it work?

[zeynabamanat]

This is very helpful, thanks!
but I want to use opencv in android so how can build it for android with libc++ and ndk r21e? from what step must change opencv building?

[MartinLind]

I used the Opencv 4.4.0 source version and after reconfigure the contrib modules I still had red lines. Mostly they include the topic caffe_INCLUDE_DIR not found. Can I disable Caffe include and HDF5? Or what can I do to get rid of the red lines

[NeroEinstein]

Thank you sir. This was very valuable.

[panagiotissavvidis]

Hi Man, i got the following while cofiguring the second time when i added the contrib folder/modules "data: Download: face_landmark_model.dat
CMake Warning at (message):
CONFIGURATION IS NOT SUPPORTED: validate setupvars script in install
directory
Call Stack (most recent call first):
CMakeLists.txt:967 (include)" is that something to worry?

[aloufin]

How do you install this into a miniConda environment? e.g. is it possible to install these into each env you have set up?

[MItacho]

Hi ! Can you please tell me why when i run INSTALL, after BUILD_ALL, visual studio starts the building process again instead of installing?

[BdyPhrk]

Now that I have the source code in visual studio, why can't I just add my external project and include <opencv2> in main.cpp, it doesn't work.

[i_am_great]

What files should i add in environment variables and visual studio

[MrMiniMe]

Hey thanks alot for the good tutorial, I was wondering how to get pycharm to work with the opencv version just built, now I just run the .py files from terminal, seems like "pycharm python" and python is two different installs.