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How to Install OpenCV on a Raspberry Pi
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- Опубликовано: 17 авг 2024
- Here's how you can install OpenCV on your Raspberry Pi 3, 4, and Zero 2 W. This is straightforward and all it takes is some time and patience. Leave comment with a question if you have one or a request for a future tutorial.
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Learn OpenCV: • OpenCV for Python
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TIMESTAMPS and INSTRUCTIONS
0:00 Intro
0:13 Access the terminal of your Pi
0:34 Check if you're using all of your system memory with:
df -h
If you're not using most of it, run
sudo raspi-config
advanced -- expand filesystem
reboot your pi
1:19 Update and upgrade
sudo apt-get update && sudo apt-get upgrade
1:35 Check your python version
python3 -V
sudo apt-get install python3-pip python3-virtualenv
mkdir project
cd project
python3 -m pip install virtualenv
python3 -m virtualenv env
source env/bin/activate
3:03 We need a bunch of system packages (credit to singleboardbyt...)
sudo apt install -y build-essential cmake pkg-config libjpeg-dev libtiff5-dev libpng-dev libavcodec-dev libavformat-dev libswscale-dev libv4l-dev libxvidcore-dev libx264-dev libfontconfig1-dev libcairo2-dev libgdk-pixbuf2.0-dev libpango1.0-dev libgtk2.0-dev libgtk-3-dev libatlas-base-dev gfortran libhdf5-dev libhdf5-serial-dev libhdf5-103 libqt5gui5 libqt5webkit5 libqt5test5 python3-pyqt5 python3-dev
If you're using a PiCamera run:
pip install "picamera[array]"
Users of PiCamera may also have to enable Camera Support:
sudo raspi-config
Inferface Options
Legacy Camera Support -- Enable
4:15 Install OpenCV
pip install opencv-contrib-python
--Takes a long time
5:25 Testing
python
import cv2
cv2.__version__
This is the best opencv installation video I have found to date! I have returned to it many times for my senior design project. Thanks for being clear and concise!
Flowless on Raspberry Pi 4 model B 4GB with Bookworm 64b. I tried about four different video tutorials but this is by far the best. Thank you, Sam!
After 3 days of trying to install opencv, reseating my raspberry multiple times, and following every single tutorial, your videos are the only ones that work for me. Thank you so muchhhh!
Happy to hear it! Let me know if there are other things you need help with
@@SamWestbyTech hello can u help me?
i cant run the j4 command
@@davidbagiag9807 I don't do a j4 command in this tutorial. I'm guessing you're following another tutorial? I heard that others with a Pi 3 got stuck at that command, and when they ran "pip install opencv-python" it worked
I have a raspberry pi 3 Model B V1.2. Installed bullseye 64bit OS. Then followed the instructions exactly in this video. The only extra thing I did was to increase the swap size to 1024 before running "pip install opencv-contrib-python".
The installation only took less than 15 mins. It didn't take 2hr or more as mentioned in the video. Not sure if I didn't anything wrong. But the installation seems successful.
64 bit os??
rasbian
incredible, i am sending this message on a raspberry pi. this is the best tutorial on youtube to get open cv.
Short and simple tutorial and it works for me. Highly recommended, very useful video!!!!!! Love from Malaysia
Best tutorial ever for OpenCV installation on Raspberry Pi! *****
I've been struggling to get open cv installed for a while, and this worked ! thank you so so much.
i spent an entire day staring at command prompt trying to get this working tysm
Great and the best tutorial, after watching a lot of others tutorials i was tired. It really works without problems
Like Preston said this was the best installation video. Thanks so much. Yes! Please keep these videos coming!
For anyone running into issues in 2024, these instructions do NOT work for Raspberry Pi's 32 bit operating systems. To get OpenCV installed, simply reflash a 64 bit operating system (you can use the desktop or no desktop environment, it does not matter) on to the MicroSD card using Raspberry Pi's imager tool. Then follow the instructions in the video and you should be set! Hope this helps
I m really appreciate your video because it is really helpful to install open cv in raspberry pi 3 old module. Thank for been clear precenting every thing.
So glad I came across this tutorial. Super clear and straightforward. Thanks
Its stuck on building wheel forever
very straight forward and simple. please do a video on how to use it
This is what I consider the PERFECT tutorial. Thank you a ton. Subscribed!
hey, tried import cv2 in thonny and it didnt work. Can you help?
I followed your procedure and can now import cv2 from command line, but Thonny reports ModuleNotFoundError: No Module named 'cv2'. This is my third week learning Python. Hope it's something simple like an environment variable, but where?
I've run the pip install opencv-contrib-python and after 2 hours or so, the line at the end of the ... in building wheel for opencv-contrib-python (pep 517) stopped turning
For those who get stuck on building wheels, the best way to solve it is to REINSTALL the Raspbian OS and follow what Sam did. It got stuck because you have an older version of Raspbian OS that has python3.7 as the default python3 version, which cannot build OpenCV and its dependencies. I tried to simply install python 3.9, but after building OpenCV, some weird errors related to 'glibc' popped up, which is hard to find available solutions online. So, I think reinstalling OS is the easiest way.
what version of os did you use? is it bullseyes or buster?
additionally, which version of python are you using? is it 3.9 or something else?
i have python 3.9.2 and it still gets stuck
Thank you very much for this and for explaining each command!
Excuse me, almost all tutorials use "libjasper-dev" library, but if I install with "sudo apt-get install libjasper-dev", the output is "not package found". Can You make video how to fix it? Can You describe which version of Raspbian was used in this video?
Great video!
Thank you very much for the sharing. Good work and useful!
Truely a straightforward, concise and clear video on cv2. It works. Thank you! It would be nice if you could follow this up with CV camera python application that really works. This might help us in better understanding of things that plague us like the assertion error -255 associated with imread().
Thanks for the suggestion! I'll look into it
When tried to run pip install opencv-contrib-python it is getting killed....
If you are stuck on "building wheel". Try to use the 64-bit OS instead of the 32-bit Version (the recommended one)
I tried to get it working for around one week before i tried this. After i changed the OS Version to 64-bit it worked on the first try.
Are you same problem for "building wheel (PEP517) "
infinity loading....
i installed 32bits same too
@@justinek6974 The 64 bit Version fixed it for me
how much time did it last when you used the 64-bit OS ? also I have another question if you may know , I tried to use the 64-bit and I want to capture an image using command ( raspistill -o image.jpg ) but it is not working it says raspistill is un known or something ... if you know what other command or a solution, that would be great!
@@wejdan9824 it did not took long, I don't know the exact time but it was less than 10 minutes.
I don't know the solution for the other question. I'm in no way an expert on raspberry pi and I only used opencv to control the camera. Sorry
That's a very good tutorial. I enjoyed your good audio and video quality which doesn't always happen on these kind of tutorials. I'd appreicate an OpenCV tutorial with the same style. Good work!
Thank you for the kind words! I am working on an OpenCV tutorial, right now.
@@SamWestbyTech cool, looking forward to it.
Hi Sam, Great video, very easy to follow and the installation was “successful” at the conclusion of the second hour. Upon ‘import cv2’, however, I’m getting a message saying the package requires ‘numpy’ and goes on to say it could be a set up issue. I tried to install ‘numpy’ per the error message and I get the message “numpy requirements already satisfied”. What am I doing wrong? Thanks, Ed
hi, Do you solve it ?
same here
@@khushinikhare_i solved, you should install a before version of Raspberry Pi OS on your Rpi
same with me today
I had an error trying to install it, the error is (externally managed environment )
Great video thanks, on python 3.7.3 I had to run: pip3 install --upgrade virtualenv for some reason before I could start a virtual environment
big thx :)
Thanks, it did not take 2 hours though - it took like a minute, is this a symptom of something bad? If not, thanks so much, you saved so much of my time that I was wasting on other tutorials for like hours
screen in the top left, look at where it says program and click on where it says “aggressive te” and change it to “analog app 1 te”
Thank you, your channel is very helpful
when i write the command of pi camera it give me this message HESE PACKAGES DO NOT MATCH THE HASHES FROM THE REQUIREMENTS FILE. If you have updated the package versions, please update the hashes any help ???
just received a raspberry pi 5 and apparently it installed open cv in 16 seconds, yet everything seems to be smooth sailing
is something terribly wrong or rightfully right
Ii followed all you step but still get error . I have raspberry 3 b python 3.9 2😢
Very helpful. Thank you very much.
This is the best I have seen.
thank you very much for sharing this tutorial. very simple and clear explained. I am at the last part installing the openCV while I a m writing this comments, even if the installing process still continues I can see there are some errors popping up here and there. Since I am not the expert on this field, not sure if I should worry or not. I would like to ask you if this instructions apply either for Raspian 32 OS and Raspian 64 OS?
I get a lot of "Package is not available, but is referred to by another package." or unavailable package errors when trying to install the long list
I followed this tutorial. But i am getting below error when i am running the program
INFO: Created TensorFlow Lite XNNPACK delegate for CPU.
qt.qpa.xcb: could not connect to display
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/usr/local/lib/python3.9/dist-packages/cv2/qt/plugins" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: xcb.
any help?
Thank you very much. This video is so useful to setup.
What does the "Unable to locate package pthon3-virtualenv" mean? What should I do if I meet this error?
Hello, I had a problem with 2 packages: while executing the commands, I ot the messages: "unable to locate package libjasper-dev" and "unable to lacate libpng-dev". I have just cancelled them from the commands, do I have to expect problems without them?
the test works for me but when I try it in Thonny it says that the module is not found
hey: why do I have this error
{ ValueError: Buffer dtype mismatch, expected 'const ITYPE_t' but got 'long long' }
Thanks for short and simple tutorial. it was not work for me on 32bit OS (install 3 hours and then got stuck). install very quick on 64bit OS (20sec for last step of pip opencv...) thanks !!!!
you save my life again and so many time
Is opencv working only in this folder (project) and only with env activated?
how do I make it work overall?
Hi, I installed opencv according to your guide.
I don't understand how I can use this and integrate it into the script.
Thanks a lot
But why it's work in terminal and not work in other python IDE as thonny ?
Thanks!
Hie Sam i have seen your 3 videos 1st one was Tensorflow then Python downgrade and then Open Cv
now the problem i am facing is i want tensorflow and Open CV to be on the same Python Version where as you have installed on 2 different version. I tried Installing Tensorflow on Python 3.9.2 it gave me error but Open Cv got installed so I tried to install Tensorflow on python version 3.7.12 Tensorflow was Sucessfully installed there but then Open CV gave me a error and i really need your help
I have the same the mistake!! if you find a solution, lmk please
I’ll look into making a combine tf+opencv tutorial
@@SamWestbyTech requesting you to do it quickly and I am in a urgent need of help other wise i would fail my sem
@@SamWestbyTech Thanks! That would be amazing 👀😩
Here’s a tutorial where I install both into the same environment:
How to Install TensorFlow 2 and OpenCV on a Raspberry Pi
ruclips.net/video/vekblEk6UPc/видео.html
4:00 what command do you use in the prompt if you use USB cam ?
I got error after waiting 109 min called: Could not build wheels for opencv-contrib-python which use PEP 517 and can not be installed directly.
What can i do now?
Please i need answer
So, after I follow your video tutorial, can I do coding in thony?
Hi i did everything according to the video and cv2 was downloaded. But when I restart my Rasberry pi and try to import cv2, I get the error: "No module named" cv2 "". What should I do or what am I doing wrong?
Double check you reactivated your virtual environment
In your project directory run the command: source env/bin/activate
@@SamWestbyTech Thank you for your help, it's already working.
Please check the install target is valid and see CMake's output for more information.
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for opencv-contrib-python
Failed to build opencv-contrib-python
ERROR: Could not build wheels for opencv-contrib-python, which is required to install pyproject.toml-based projects
downloading opencv litreally took 1min not 2hours, does that makes any problem?
for the last step, do you need to do pip3 install or is pip just fine?
Hi Sam, which operating system should be installed on the raspberry pi? With Desktop or without?
Thank you for Video
i use debian bullseye lite on my rp3 and it's difficult to open cam window on my pc, does anyone can fix this? i've tried qt, xorg, xcb and nothing happen
I don't even have a file system. am i doing something wrong???? I'm on a time limit to do this so please respond quickly.
Hi Sam, I am getting a "failed building wheel for opencv-contrib-python" error in "pip install opencv-contrib-python". can you help me, please?
Nice tutorial! Thanks.
I'm trying the pip install opencv-contrib-python and it keeps saying "collecting opencv-contrib-python killed" then jt just stops
Thank you, this helped me a lot
Not good. After hours I have screen terminal full of red ink. Culminating with: ERROR: Could not build wheels for opencv-python-headless which use PEP 517 and cannot be installed directly
It is amazing stuff on your channel
Please also make a video about cross-complying Qt framework on raspberry pi
Thank u so much great tutorial 👍🏻
Hello, that's a great tutorial. Is it mandatory to use a virtual environment ?
Thank you so much Sam, you rock.
Thankyou so much it works perfectly
Thanks bro
can you make a video to install spyder in Raspberry pi . I have got so many error regarding console , PyQt etc.
Very good tutorial
Thanks a lot Sam!
Muchas gracias tu video me ayudo muchisimo! no me cargó en la raspberry pi 3b+ talvez debo de aumentar el GPU pero si funcionó en la raspberry pi 4. Muy bien explicado y nuevamente muchas gracias!
I'm sorry it didn't work on the 3b+ but I'm happy it worked on your 4! I'll try to find a 3b+ to do some testing
I want to code in C++. Does it work with this installation?
Can you do a video about the tutorial for usage of OpenCV. Thank you, new subscriber here.
Sure thing I’ll add it to the list
Done this many times (still says nomodule named ''cv2') plz help
HI at 2.47, after changing to the project directory, in the video you enter "virtualenv env", however in the description you have written "python3 -m pip install virtualenv" followed by python3 -m virtualenv env. Which is correct, the video or the description.
Both should get you the same result. I would use the commands in the description because it tells your Pi exactly which python version to use
if i run this command virtualenv env i am getting virtualenv: command not found can someone help me with this problem
Hi Sam, I love your video. Unfortunately I've run into an issue though. I followed these instructions last night and it worked a treat installing onto a Pi 4B with 32-bit Raspbian+Desktop edition (Bullseye). However, this morning I attempted to install on 64-bit Raspbian (Bullseye) and I'm encountering an error saying 'Unable to locate package libjasper-dev' when trying to install the system packages at 3:22 in your video. Any idea what may be the cause? Everything up to this point is identical to your video?? Thoughts?
Same 😢 what was the solution?
one additional question. I did install but I did not create the virtual environment and I just proceed to download openCV in the home directory created by default when you get up and running the Raspberry Pi. Would be this the reason why I am getting some errors while installing openCV ?
Hi, I have the same question
this video is very nice thank you
Hola Sam, a mi me sale un error al momento de poner "virtualenv env", cual seria el motivo?
Hello sir, I am trying to install open cv on my raspberry pi 3 , but it has been 3 hrs since it stuck on "building wheel for opencv-contrib-python pep 517", what should i do, should i wait little longer, or close everything and restart whole process again, and also if i install simple main module only opencv-python, will it be enough for lane detection and object detection???
With a Raspberry Pi 3 running 32 bit OS, this could take up to 24 hours to install. Yes, the simple module will be enough for lane detection and object detection
thank you for helping
I dont know if im stuck in PEP 517, because is slower tnaht what I see in the video, but its already 4 hrs and still not installed
Yep it’ll take a while. If you have a pi 3 or 4 you could upgrade to 64 bit OS and it’ll be very fast
my raspberry pi reaches Building wheel (pep 517) and stuck there and when i leave it after a while it turns off the whole system and i had to restart the whole process ? any solution ?(raspberry pi 3 and only opencv-python )
Another commenter, Have Harlow gave this suggestion for the Pi 3:
"Follow the RUclips video - Murtaza's Workshop Robotics and AI - How to install OpenCV on Raspberry Pi 4 ..., where he proposes 20 steps. (Like many others) I got stuck at 18th (make -j4 (I also tried make -j1 as recommended)), but I got an error. Here is when I tried installing opencv using pip, as described in your video - pip install opencv-contrib-python, and it just worked (I already made a few simple programs to check it). I took like 240 minutes."
In command, pip install opencv-contrib-python, i encountered with ERROR: THESE PACKAGES DO NOT MATCH THE HASHES FROM THE REQUIREMENTS FILE. If you have updated the package versions, please update the hashes. Otherwise, examine the package contents carefully; someone may have tampered with them. How can i solve it?
Next one: why there is error in installing libhdf5-dev?
i was checking my python version before installing opencv and i have when i use python3 command it shows 3.7.3 but when i use python -V command it shows that i have 2.7.16 version .. what version that i really have now in my raspberry and if it's the python 2 how can i upgrade it to 3.7 without using a pyenv ???????
That's okay to have python 2 and 3 installed. Whenever I type a command that starts with python, you'll have to change that to python3
during "virtualenv env" this command I have got an error : ModuleNotFoundError: No module named 'virtualenv.activation.xonsh' I have recently install python 3.7.12 and tensorflow 2.5.0 from your videos. How can I solve this?
Check your python version to verify you're using python 3.7.12
python -V
Then run the following
python -m pip install virtualenv
python -m virtualenv env
source env/bin/activate
Now you should see that you're in a virtual environment
Thanks for your video. I have a question. I have both python 2 and python 3. If I use python 3 do I need to change the command " pip install opencv-contrib-python"? Change to " pip3 install opencv-contrib-python3" ? Thanks
Yup I'm pretty sure you do. You want to use the pip associated with python3
hi. i’m following your tutorial and several others trying to install opencv but everytime i ran the last command pip install opencv-contrib-python, they all run without ever stopping, even after over night. i have no idea what im missing..
In some cases it can take a very long time. Also, opencv-contrib-python will take much longer than opencv-python. If you upgrade to 64 bit OS (assuming you have a Pi 3 or Pi 4) it will go much faster
this the error i am getting :::
libpng12-dev is not available, but is referred to by another package
Hi! I am trying to install TensorFlow and OpenCV on the same environment. I followed your videos but for some reason I can not install python 3.7.12 in the environment that I installed opencv. It says it’s already installed, but even after running pyenv global / local, the env python version never changes. Is there an specific order I should follow? Thank you very much. Looking forward to your response since your videos are the only ones that work for me lol :)
Thanks for pointing this out. I overlooked that in my pyenv tutorial. I’ll post steps after the weekend when I’m back to my Pi to test. It’s possible and you’ll use a package called pyenv-virtualenv
Okay, you'll have to create a new environment and reinstall Tensorflow and OpenCV.
After you switch python versions (probably with the command pyenv global 3.7.12) do the following:
python -m pip install virtualenv
python -m virtualenv env
source env/bin/activate
This will be your virtual environment for both installations. You then can install tensorflow and opencv.
@@SamWestbyTech I’ll try it right away and let you know 😀 Thank you for your quick response! Really hope it works hahaha
@@SamWestbyTech I tried this, but I got an error installing opencv that says "An error ocurred while building with cmake". I am trying to install opencv and tensorflow with 3.7.12 python version. What can I do?
@@nathalylozano8270 try sudo pip3 install opencv-python
Im also trying to do the same tensorflow and open cv on python 3.7 but when i run python script with sudo it import cv2 and when i run only python3 the error occurred no module found cv 2 when i use sudo python 3 i cannot import tensorflow but without sudo i can import it i don't know why its happning i can import both at a time ... If anyone having solution please let me know 😅
Can this be done on a zero w