OpenCV的3.0.0阿爾法與Python 3未能導入CV2

Question

我使用蟒蛇2.1.0與3.4.1蟒和剛剛建成的OpenCV 3.0.0-α在Mac OSX上的優勝美地使用下面的命令：

cmake -D CMAKE_BUILD_TYPE=RELEASE 
-D BUILD_PERF_TESTS=OFF 
-D BUILD_opencv_python3=ON 
-D CMAKE_OSX_ARCHITECTURES=x86_64 
-D CMAKE_INSTALL_PREFIX=/usr/local 
-D PYTHON3_EXECUTABLE=${ANACONDA}/bin/python3 
-D PYTHON3_LIBRARY=${ANACONDA}/lib/libpython3.4m.dylib 
-D PYTHON3_INCLUDE_DIR=${ANACONDA}/include/python3.4m 
-D PYTHON3_NUMPY_INCLUDE_DIRS=${ANACONDA}/lib/python3.4/site-packages/numpy/core/include 
-D PYTHON3_PACKAGES_PATH=${ANACONDA}/lib/python3.4/site-packages .. 

該建築似乎成功。建立opencv後，我得到了libopencv_*.dylib文件。 但我無法導入CV2模塊：

Python 3.4.1 |Anaconda 2.1.0 (x86_64)| (default, Sep 10 2014, 17:24:09) 
[GCC 4.2.1 (Apple Inc. build 5577)] on darwin 
Type "help", "copyright", "credits" or "license" for more information. 
>>> import cv2 
Traceback (most recent call last): 
    File "<stdin>", line 1, in <module> 
ImportError: dlopen(/Users/scari/anaconda3/lib/python3.4/site-packages/cv2.so, 2): Library not loaded: libpython3.4m.dylib 
    Referenced from: /Users/scari/anaconda3/lib/python3.4/site-packages/cv2.so 
    Reason: image not found 
>>> 

下面是sys.path的輸出：

>>> sys.path 
['', '/Users/scari/anaconda3/lib/python34.zip', '/Users/scari/anaconda3/lib/python3.4', '/Users/scari/anaconda3/lib/python3.4/plat-darwin', '/Users/scari/anaconda3/lib/python3.4/lib-dynload', '/Users/scari/anaconda3/lib/python3.4/site-packages', '/Users/scari/anaconda3/lib/python3.4/site-packages/Sphinx-1.2.3-py3.4.egg', '/Users/scari/anaconda3/lib/python3.4/site-packages/runipy-0.1.1-py3.4.egg', '/Users/scari/anaconda3/lib/python3.4/site-packages/setuptools-5.8-py3.4.egg'] 

我應該先檢查一下？

Answer 1

好的，我有完全相同的問題。

我固定它得益於本教程：https://gist.github.com/welch/6468594

libpython3.4m.dylib沒有找到，所以你應該檢查cv2.so用這個命令：

otool -L ~/anaconda3/lib/python3.4/site-packages/cv2.so 

第一對夫婦的輸出應該讀什麼樣的線路：

cv2.so: 
cv2.so (compatibility version 0.0.0, current version 0.0.0) 
libpython3.4m.dylib (compatibility version 3.4.0, current version 3.4.0) 

問題是缺少絕對路徑libpython3.4m.dylib

您可以用命令解決這個問題：

sudo install_name_tool -change libpython3.4m.dylib ~/anaconda3/lib/libpython3.4m.dylib ~/anaconda3/lib/python3.4/site-packages/cv2.so 

這個工作對我來說，在蟒蛇的Ubuntu 14.04下使用OpenCV的3與Python 3 IPython的筆記本