Build and install OpenCV from source with CUDA and cuDNN support

--------- IMPORTANT ---------

If "nvcc not found" then create following soft links to local bin.
sudo ln -s /usr/local/cuda-11.3/bin/* /usr/local/bin
sudo ln -s /usr/local/cuda-11.3/nvvm/bin/* /usr/local/bin
--------- END ---------

--------- IMPORTANT ---------
cuDNN installation has changed since this video. Please refer the instruction in the documentation
--------- END ---------

CUDA instillation guide:

cuDNN installation guide:

OpenCV repositories:

CUDA wiki page:

Follow me on:

[kunalk]

This was indeed very helpful. I was not able to build with cuda support but now I can. Thanks a ton !

[MrGopak]

Exact and thorough manual. Need to add Ubuntu 20.04 in the title for better indexing. Huge thanks!

[tungphamkhachoang]

That was very helpful, thank you so much!

[karishmathumu]

This was very informative and great narrative. But i am having issues when i am doing the 2nd round of configuration. It says "Error in configuration process, project files maybe invalid". Could you please help me.

[simplesecomumcidadao]

9:52 When I paste the link in this section and press enter, it gives me an error and says no such command was found. how can I do it

[guillermoalejandrobastianf]

I installed and didn't have errors. But when I run the final command is returning me 0. Could be because I have CV2 installed using pip before?

[mohamedkhalilallaoui]

Nice video thanks ! . I have a question i noticed that you imported cv2 globally what if i use virtualenv in a project, how can i use the opencv gpu on my venv ??

[Abhishek_Satasiya]

I have done all the things you did in the video. and all things worked out perfectly fine. but in the last step when I write

import cv2
it is giving me ModuleNotFoundError: No module named 'cv2'

[timewaster]

Hi @s1n7ax! Thank for your help but I face some trouble to install open CV. Could you answer my question
If I use (base) - virtual environment created by anaconda. can I import cv2 in (base) to used in pytorch? and I installed Cuda and CuDNN but not like you so any difference between your install process and my.
Sorry for my bad english and thank you so much for your help

[comingsoon]

i was succeed built cv2 with cmake, installed it perfectly and cuda support also. but how to put this libs into a virtualenv

[snax]

IMPORTANT
cuDNN installation has changed since this video. Please refer the instruction in the documentation

[eddygonzalez]

Is it possible to install this with anaconda ?

[snax]

IMPORTANT
Please add OPENCV_GENERATE_PKGCONFIG=1 flag in cmake-gui so other applications can find opencv.

If "nvcc not found" then create following soft links to local bin.
sudo ln -s /usr/local/cuda-11.3/bin/* /usr/local/bin
sudo ln -s /usr/local/bin