如何为Python和Ubuntu安装OpenCV 2.4.7

Question

I am going to use a code shared on GitHub on facial feature extraction. This code has OpenCV 2.4.7 and Python 2.7 dependencies. I tried OpenCV 3.4, but it didn't work. This code uses cv2.Boost() which is not found in OpenCV 3.4. Also, pypi only support OpenCV 3x. I couldn't install OpenCV 2.4.7 by pip install.

Please let me know how I can install OpenCV 2.4.7 for Python? I prefer to install it in a Conda virtual environment.

OS: Ubuntu 16; I can use Windows 10 too.

Answer 1

I think you could build the OpenCV from source, so you can choose the branch (version) you want to use:

sudo apt-get install build-essential

sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev

sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev

cd ~ 
git clone https://github.com/opencv/opencv.git
cd opencv
git checkout 2.4
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=RELEASE -DCMAKE_INSTALL_PREFIX=/usr/local ..
make -j7
sudo make install

Good luck!

Answer 2

pip install opencv-python==2.4.7

For python3 try:

pip3 install opencv-python==2.4.7

However, before you install opencv, have numpy and matplotlib installed.

pip install numpy

pip install matplotlib