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无法在macOS上的Anaconda3 python3.6上安装OpenCV3

如何解决《无法在macOS上的Anaconda3python3.6上安装OpenCV3》经验,为你挑选了3个好方法。

我正在尝试在Mac OS 10.11.6上的Anaconda3 python 3.6上安装OpenCV 3.2.0,但我找不到办法.我的Anaconda3安装了python 3.5.2,但如果我使用创建一个新的虚拟环境

$ conda create -n myvenv python  
then it downloads and installs python 3.6 on the new myvenv. A simple search  
$ conda search opencv
opencv                       2.4.8                np17py27_2  defaults 

而opencv3没有结果

$ conda search opencv3
NoPackagesFoundError: Package missing in current osx-64 channels: 
  - opencv3

安装menpo opencv3 build会产生以下冲突:

$ conda install -c menpo opencv3
Fetching package metadata ...........
Solving package specifications: .
UnsatisfiableError: The following specifications were found to be in conflict:
  - opencv3 -> python 2.7* -> openssl 1.0.1*
  - python 3.6*
Use "conda info " to see the dependencies for each package.

我尝试使用自制软件安装,但将其与Anaconda3 python3链接似乎很难:

$ brew install eigen tbb
Updating Homebrew...
==> Downloading https://homebrew.bintray.com/bottles/eigen-3.3.1.el_capitan.bottle.tar.gz
100.0%
==> Pouring eigen-3.3.1.el_capitan.bottle.tar.gz
  /usr/local/Cellar/eigen/3.3.1: 486 files, 6.4M
==> Downloading https://homebrew.bintray.com/bottles/tbb-4.4-20161128.el_capitan.bottle.tar.gz
100.0%
==> Pouring tbb-4.4-20161128.el_capitan.bottle.tar.gz
==> Caveats
Python modules have been installed and Homebrew's site-packages is not
in your Python sys.path, so you will not be able to import the modules
this formula installed. If you plan to develop with these modules,
please run:
  mkdir -p /Users//.local/lib/python3.5/site-packages
  echo 'import site; site.addsitedir("/usr/local/lib/python2.7/site-packages")' >> /Users//.local/lib/python3.5/site-packages/homebrew.pth
==> Summary
  /usr/local/Cellar/tbb/4.4-20161128: 119 files, 1.9M

更多信息

$ conda info
Current conda install:
               platform : osx-64
          conda version : 4.3.8
       conda is private : False
      conda-env version : 4.3.8
    conda-build version : 2.0.2
         python version : 3.5.2.final.0
       requests version : 2.12.4
       root environment : /Users//anaconda3  (writable)
    default environment : /Users//anaconda3/envs/lesvenv
       envs directories : /Users//anaconda3/envs
          package cache : /Users//anaconda3/pkgs
           channel URLs : https://repo.continuum.io/pkgs/free/osx-64
                          https://repo.continuum.io/pkgs/free/noarch
                          https://repo.continuum.io/pkgs/r/osx-64
                          https://repo.continuum.io/pkgs/r/noarch
                          https://repo.continuum.io/pkgs/pro/osx-64
                          https://repo.continuum.io/pkgs/pro/noarch
            config file : None
           offline mode : False
             user-agent : conda/4.3.8 requests/2.12.4 CPython/3.5.2 Darwin/15.6.0 OSX/10.11.6
                UID:GID : 502:20

而结尾清单是:

$ conda list
packages in environment at /Users//anaconda3/envs/lesvenv:
anaconda-client           1.6.0                    py36_0
clyent                    1.2.2                    py36_0
mkl                       2017.0.1                      0
numpy                     1.11.3                   py36_0
openssl                   1.0.2j                        0
pip                       9.0.1                    py36_1
python                    3.6.0                         0
python-dateutil           2.6.0                    py36_0
pytz                      2016.10                  py36_0
pyyaml                    3.12                     py36_0
readline                  6.2                           2
requests                  2.12.4                   py36_0
setuptools                27.2.0                   py36_0
six                       1.10.0                   py36_0
sqlite                    3.13.0                        0
tk                        8.5.18                        0
wheel                     0.29.0                   py36_0
xz                        5.2.2                         1
yaml                      0.1.6                         0
zlib                      1.2.8                         3

我的anaconda是: /Users//anaconda3/bin/anaconda
我的python 3.5.2是: /Users//anaconda3/bin/python
我的conda myvenv python 3.6是:/Users//anaconda3/envs/myvenv/bin/python



1> Viv..:

这个答案现在已经过时了(除非出于某种原因你想使用旧版本的OpenCV) - 请看这个答案

以上正确答案对我不起作用.

结束了降低python的版本,直到修复为止.

conda install python=3.5 conda install -c menpo opencv3

我知道这不是一个永久性的解决方案,但这对我有用,你可以在没有做太多的情况下保持在conda环境中.

这个问题目前在这里引用:https://github.com/conda/conda/issues/2448

希望这可以帮助!



2> Nehal J Wani..:

由于您使用的是较新版本的python3,您可能需要自己从配方中构建opencv,可以在https://github.com/conda-forge/opencv-feedstock上找到.

另一个选择是在新环境中创建特定版本的python3,方法如下:

(root) osx:Downloads nwani$ conda list | grep python
python                    3.6.0                         0 
(root) osx:Downloads nwani$ conda create -yn opencvtest python=3.5.2
(root) osx:Downloads nwani$ source activate opencvtest
(opencvtest) osx:Downloads nwani$ conda list | grep python
python                    3.5.2                         0

conda-forge通道上提供了版本3.1.0版本的opencv :

(root) osx:Downloads nwani$ conda search -c conda-forge --spec 'opencv=3*'
Fetching package metadata .........
opencv                       3.1.0               np110py27_0  conda-forge     
                             3.1.0               np110py34_0  conda-forge     
                             3.1.0               np110py35_0  conda-forge     
                             3.1.0               np111py27_0  conda-forge     
                             3.1.0               np111py34_0  conda-forge     
                             3.1.0               np111py35_0  conda-forge     
                             3.1.0               np110py27_1  conda-forge     
                             3.1.0               np110py34_1  conda-forge     
                             3.1.0               np110py35_1  conda-forge     
                             3.1.0               np111py27_1  conda-forge     
                             3.1.0               np111py34_1  conda-forge     
                             3.1.0               np111py35_1  conda-forge

你可以像这样安装它:

(opencvtest) osx:Downloads nwani$ conda install -y -c conda-forge opencv 
(opencvtest) osx:Downloads nwani$ conda list | grep -e python -e opencv
# packages in environment at /Users/nwani/Downloads/m3/envs/opencvtest:
opencv                    3.1.0               np111py35_1    conda-forge
python                    3.5.2                         0  



3> Sean L..:

我发现接受的解决方案不适用于带有anaconda的python 3.6.

所以要手动安装opencv并仍然使用conda:

$ cd ~
$ git clone https://github.com/opencv/opencv
$ git clone https://github.com/opencv/opencv_contrib
$ cd ~/opencv
$ mkdir build
$ cd build
$ cmake -D CMAKE_BUILD_TYPE=RELEASE \
    -D PYTHON3_LIBRARY=/Users/yourusername/anaconda3/lib/libpython3.6m.dylib \
    -D PYTHON3_INCLUDE_DIR=/Users/yourusername/anaconda3/include/python3.6m \
    -D PYTHON_DEFAULT_EXECUTABLE=/Users/yourusername/anaconda3/bin/python3 \
    -D PYTHON_PACKAGES_PATH=/Users/yourusername/anaconda3/lib/python3.6/site-packages \
    -D INSTALL_C_EXAMPLES=OFF \
    -D INSTALL_PYTHON_EXAMPLES=ON \
    -D BUILD_EXAMPLES=ON \
    -D BUILD_opencv_python3=ON \
    -D BUILD_opencv_python2=OFF \
    -D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib/modules ..
$ make -j4
$ make install

此时安装应该顺利进行.但是,如果你去终端,你仍然会得到:

$ python
import cv2
ImportError: No module named cv2

所以现在重命名这个文件

$ cd ~/opencv/lib/python3.6/site-packages
$ mv cv2.cpython-36m-darwin.so cv2.so

并将其复制到此位置

$ cp cv2.so /Users/yourusername/anaconda3/lib/python3.6/site-packages

现在它应该工作.

$ python
import cv2
cv2.__version__
'3.2.0-dev'

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