CODEWITHSUNDEEP
pythonopencvpycharm
Sibi
Sibi

Reputation: 2421

Pycharm/Python OpenCV and CV2 install error

I've been trying to install both OpenCV and cv2 from both Pycharm and from the terminal as suggested using:

pip install --user opencv
pip install --user cv2

but I'm getting the following error for them:

Collecting opencv
  Could not find a version that satisfies the requirement opencv (from versions: )
No matching distribution found for opencv

and

Collecting cv2
  Could not find a version that satisfies the requirement cv2 (from versions: )
No matching distribution found for cv2

How can I fix these and install the packages properly? I'm using python 3.4.

Upvotes: 158

Views: 367406

Answers (21)

Knoweldgeyog
Knoweldgeyog

Reputation: 99

On Windows:

!pip install opencv-python

Upvotes: 10

Ranjeet R Patil
Ranjeet R Patil

Reputation: 491

Keep it simple and just run.

pip install opencv-python

This is the simplest way of installing opencv. If you still face issue, create a virtual environment and try installing opencv.

Upvotes: 8

Dipanwita Mallick
Dipanwita Mallick

Reputation: 937

If you still find any error to install open-cv in your mac, try this:

opencv-python==4.2.0.34

This worked for me.

Upvotes: 1

yoganandham pachigari
yoganandham pachigari

Reputation: 1

Go through with this link: https://learnopencv.com/install-opencv-4-on-raspberry-pi/

you can install OpenCV perfectly with out any error. but the problem was it will take lot of time to install.

I had used pi3 model B+ with 32GB class10 SD card for me it took more than 12 hours for complete installation.

Upvotes: 0

NAVNEET CHANDAN
NAVNEET CHANDAN

Reputation: 289

First run from cmd

pip --version

to make sure that you have the updated version installed.

Then run

pip install opencv-python

Upvotes: 0

Furkan Gulsen
Furkan Gulsen

Reputation: 1600

First step:

pip uninstall numpy
pip uninstall opencv-python

Second step:

pip install numpy
pip install opencv-python

Upvotes: 0

Hashan Malawana
Hashan Malawana

Reputation: 363

When I was facing this issue I used to install OpenCV in pycharm installed package panel where we can find under the settings tab. Search "OpenCV-python" and install it in the installed package panel of right interpreter.

Upvotes: 0

Sankha Rathnayake
Sankha Rathnayake

Reputation: 843

This the correct command that you need to install opencv

pip install opencv-python

if you get any error when you are trying to install the "opencv-python" package in pycharm, make sure that you have added your python path to 'System Variables' section of Environment variables in Windows. And also check whether you have configured a valid interpreter for your project

Upvotes: 31

Sirosh Bashir
Sirosh Bashir

Reputation: 479

In jetso nano this work for me.

$ git clone https://github.com/JetsonHacksNano/buildOpenCV
$ cd buildOpenCV

Upvotes: 0

saazan14
saazan14

Reputation: 11

In win, download the py based latest numpy and Opencv from Unofficial Windows Binaries for Python Extension Packages and pip install its source in cmd. Later copy site-package folder from main py lib to venv lib.

Upvotes: 0

Vibhanshu Rai
Vibhanshu Rai

Reputation: 29

this will help you

pip3 install opencv-python

this is the snippet of successful installation

Upvotes: 1

Debu Shinobi
Debu Shinobi

Reputation: 2562

I had the same problem. Here are the steps for Windows 10 users.

Open CMD: win+r then type cmd. Now,

  1. Type pip install virtualenv
  2. Create a Virtual Environment, Type virtualenv testopencv
  3. Get Inside testopencv, Type cd testopencv
  4. Activate the Virtual Environment, Type .\Scripts\activate
  5. Now Install Opencv, Type pip install opencv-contrib-python --upgrade
  6. Let's test Opencv, Type Python then import cv2 hit enter then type print(cv2.__version__) to check if its installed

Now, open a new cmd, win + r then type cmd, repeat step 6. If it gives you an error.

Go inside the testopencv folder, inside lib. Copy everything, go to your python directory, inside lib folder paste it and skip that are already present.

Again open a new cmd, repeat Step 6.

Hope it helps.

Upvotes: 0

Santhosh Dhaipule Chandrakanth
Santhosh Dhaipule Chandrakanth

Reputation: 1184

I rather use Virtualenv to install such packages rather than the entire system, saves time and effort rather than building from source.

I use virtualenvwrapper

Windows user can download

pip install virtualenvwrapper-win

https://pypi.org/project/virtualenvwrapper-win/

Linux follow

pip install opencv-python

opencv-python

If processing a video is required

pip install opencv-contrib-python

opencv-contrib-python

If you do not need GUI in Opencv

pip install opencv-contrib-python-headless

opencv-contrib-python-headless

Upvotes: 4

Yogesh Awdhut Gadade
Yogesh Awdhut Gadade

Reputation: 2708

Try this. I am using Jupyter notebook (OS: Ubuntu 16.04 LTS on Google Cloud Platform + on Windows). Executed following command in the Jupyter notebook to install opencv:

!pip install opencv-contrib-python    #working on both Windows and Ubuntu

After successful installation you will get following message:

Successfully installed opencv-contrib-python-4.1.0.25

Now restart the kernel and try to import opencv as:

import cv2

The same command can be used to installed opencv on Windows as well.

SOLUTION 2: try following commands to install opencv: For Ubuntu: Run following command from terminal:

sudo apt-get install libsm6 libxrender1 libfontconfig1

Restart Jupyter notebook kernel and execute following command: 

!pip install opencv-contrib-python

NOTE: You can run all the above commands from the terminal as well without using '!'.

Upvotes: 7

plotseeker
plotseeker

Reputation: 71

How about try some different mirrors? If you are in China, I highly recommend you try:

sudo pip install --index https://pypi.mirrors.ustc.edu.cn/simple/ opencv-contrib-python

If not, just replace the url address to some other mirrors you like! Good luck.

Upvotes: 1

yunusemredemirbas
yunusemredemirbas

Reputation: 152

you must install opencv-python pip/pip3 install opencv-python if you try import opencv-python, receive error. Fix this error, use the import cv2

Upvotes: 1

vishal
vishal

Reputation: 905

python3.6 -m pip install opencv-python

will install cv2 in python3.6 branch

Upvotes: 10

Ryan Guest
Ryan Guest

Reputation: 6470

You are getting those errors because opencv and cv2 are not the python package names.

These are both included as part of the opencv-python package available to install from pip.

If you are using python 2 you can install with pip:

 pip install opencv-python

Or use the equivilent for python 3:

pip3 install opencv-python

After running the appropriate pip command your package should be available to use from python.

Upvotes: 330

mdoc-2011
mdoc-2011

Reputation: 2997

I ran into the same problem. One issue might be OpenCV is created for Python 2.7, not 3 (not all python 2.7 libraries will work in python 3 or greater). I also don't believe you can download OpenCV directly through PyCharm's package installer. I have found luck following the instructions: OpenCV Python. Specifically:

  1. Downloading and installing OpenCV from SourceForge
  2. Copying the cv2.pyd file from the download (opencv\build\python\2.7\x64) into Python's site-packages folder (something like: C:\Python27\Lib\site-packages)
  3. In PyCharm, open the python Console (Tools>Python Console) and type:import cv2, and assuming no errors print cv2.__version__

Alternatively, I have had luck using this package opencv-python, which you can straightforwardly install using pip with pip install opencv-python

Good luck!

Upvotes: 12

daniel_hck
daniel_hck

Reputation: 1140

Installing opencv is not that direct. You need to pre-install some packages first.

I would not recommend the unofficial package opencv-python. Does not work properly in macos and ubuntu (see this post). No idea about windows.

There are many webs explaining how to install opencv and all required packages. For example this one.

The problem of trying to install opencv several times is that you need to uninstall completely before attempting again, or you might end having many errors.

Upvotes: 1

Judit
Judit

Reputation: 39

here is a tutorial that worked for me without any problem.

Copied from the site above the important part:

Download the OpenCV version corresponding to your Python installation from here. In my case, I’ve used opencv_python-3.1.0-cp35-cp35m-win32.whl.

Now, open a cmd window like before. You can open this directly in your Downloads folder if you SHIFT and right click inside it. The idea is to open a cmd window where you’ve downloaded the above [...] file. Use the [...] command to install [...] OpenCV:

1     pip install "opencv_python-3.1.0-cp35-cp35m-win32.whl"

Additional note: don't forget to change the name of the downloaded file in the command you use. Apparently by installing opencv, you'll have access to cv2 too.

Upvotes: 2

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