I have darknet and opencv4.2.0 with Ubuntu 18.04
however I couldn't import CV2 while using python (darknet works well)
when i use sudo pip3 install opencv-python
terminal shows
Installing through navigator doesn't work either
As above, trying to install opencv-python.
Normally this would be a simple pip install opencv-python, but it doesn't seem to work. Instead, opencv install to the miniconda directory
/home/pi/miniconda3/lib/python3.5/site-packages
instead of global
/usr/lib/python3.7
Trying to add opencv-python in Thorny through the application fails. In the python program...
import sys
sys.path.append('/home/pi/miniconda3/lib/python3.5/site-packages')
import cv2
results in a
No module named 'cv2.cv2'
I've tried adding it to path also (export PYTHONPATH=/home/pi/miniconda3/lib/python3.5/site-packages:$PYTHONPATH) with no luck.
Because pip is linked to your default Python and I think this default is your miniconda. A better approach is to call the Python version directly with pip. Additionally #Dave W. Smit mentioned that you should better install opencv-python-contrib to use the full OpenCV package (but don´t use both packages!).
$ python-3.7 -m pip install opencv-python-contrib
Or you can use the pip version (if pip is at least version 0.8)
$ pip-3.7 install opencv-python-contrib
Or with pip version 1.5+
$ pip3.7 install opencv-python-contrib
I am struggling with Jetson TX2 board (aarch64).
I need to install python wrapper for OpenCV.
I can do:
$ sudo apt-get install python-opencv
But I cannot do:
$ sudo pip install opencv-python
Is this because there is no proper wheel file in http://www.lfd.uci.edu/~gohlke/pythonlibs/#opencv?
Is there a way to install opencv-python through pip?
We were getting the same error.For us, it solved by upgrading pip version (also discussed in FAQ of OpenCV GitHub). Earlier we had pip-7.1.0, post upgrading it to "pip-9.0.2", it successfully installed.
pip install --upgrade pip
pip install opencv-python
pip doesn't use http://www.lfd.uci.edu/~gohlke/pythonlibs/, it downloads packages from PyPI.
The problem is that you have an unusual architecture; pip cannot find a package for it and there is no source code package.
Unfortunately I think you're on your own. You have to download source code from https://github.com/skvark/opencv-python, install compiler and necessary libraries and compile OpenCV yourself.
Use this and it will work:
pip install --upgrade pip
pip install opencv-python
Another problem can be that the python version you are using is not yet supported by opencv-python.
E.g. as of right now there is no opencv-python for python 3.8. You would need to downgrade your python to 3.7.5 for now.
It happened with me on Windows, pip was not able to install opencv-python==3.4.0.12.
Later found out that it was due to the Python version, Python 3.7 has some issue with not getting linked to https://github.com/skvark/opencv-python.
Downgraded to Python 3.6 and it worked with:
pip3 install opencv-python
I faced the same issue but the mistake which I was making was pip install python-opencv where I should have used pip install opencv-python. Hope this helps to anyone. It took me few hours to find.
As there is no proper wheel file in http://www.lfd.uci.edu/~gohlke/pythonlibs/#opencv?
Try this:(Worked in Anaconda Prompt or Pycharm)
pip install opencv-contrib-python
pip install opencv-python
A way to do this is to install Anaconda on your computer.
Then you should be able to do:
pip install opencv-python
or
conda install opencv
I had the same error. The first time I used the 32-bit version of python but my computer is 64-bit. I then reinstalled the 64-bit version and succeeded.
Install it by using this command:
pip install opencv-contrib-python
I faced same issue while using Python 3.9.0.
Upgrading python to latest version (currently 3.9.1) and reinstalling opencv-python solved this issue.
I got this error and I solved it by simply waiting.
I had similar problem:
ERROR: Could not find a version that satisfies the requirement opencv-contrib-python (from versions: none)
Command pip update was not resolving my issue.
After lunch-time I tried again and it installed correctly the package.
Maybe the server was down.
I update the version of python, and then the issue was addressed. Please refer to this video: https://www.youtube.com/watch?v=BQnpRbbEZB4
I want to update opencv from 3.1.0 to 3.2.0
I run "conda install -c menpo opencv3=3.1.0" to install opencv 3.1.0
when I run "conda install -c menpo opencv3=3.2.0", I got error.
C:\Users\eason>conda install -c menpo opencv3=3.2.0
Fetching package metadata .............
PackageNotFoundError: Package not found: '' Package missing in current win-64 ch
annels:
- opencv3 3.2.0*
You can search for packages on anaconda.org with
anaconda search -t conda opencv3
https://anaconda.org/menpo/opencv3
When I run "anaconda search -t conda opencv3"...
I found opencv3=3.2.0 , but I can't install it?
Is anyone helps ? thanks!
run the following command
conda install -c conda-forge opencv=3.2.0
The menpo file page shows only OpenCV 3.2.0 for Python 2.7/3.4/3.5 on linux-64 platform is available.
If you are using Python 3.4, you may try this:
conda install -c daleydeng opencv=3.2.0
Just pushed my OpenCV 3.2 binary to github. It compiled with opencv_contrib modules and runs on Win10 64-bit with Python 2.7.
You may have a trial. Good Luck!
Open Anaconda terminal
Navigate to the folder in Anaconda main folder which contains Python Scripts
Download the un-offical opencv + contrib binaries from here
In the Anaconda terminal do pip install
When I try to install scikit-image with pip2 there is show error. I have tried to find this problem solution.
Command python setup.py egg_info failed with error code 1 in /tmp/pip_build_root/scikit-image
Storing debug log for failure in /home/nshakib/.pip/pip.log
My guess is that you might have missing dependencies. I don't think Ubuntu 14.04 comes out of the box with any of the SciPy stack.
To answer your question try,
sudo apt-get install python-matplotlib python-numpy python-pil python-scipy
Then
sudo apt-get install build-essential cython
Finally
sudo apt-get install python-skimage
If that still doesn't work, you could try using the Anaconda Distribution for Python 2.7 from Continuum Analytics.
It comes with many of the major packages built-in and has a great package manager that manages dependencies.
https://docs.continuum.io/anaconda/install#anaconda-install
The conda package would be installed with conda install scikit-image