Question

我在Windows 10下使用Visual Studio 2017从源代码构建了OpenCV 3.2，它在构建目录中生成了一个文件cv2.cp36-win_amd64.pyd，并将其复制到C:\Users\fanta\Anaconda3\Lib\site-packages。

但是现在，在进入Python 3.6的Anaconda环境后，python找不到包，请参阅下面的脚本（底部错误）：

C:\Users\fanta>conda create -n py36 python=3.6
Fetching package metadata ...........
Solving package specifications: .

Package plan for installation in environment C:\Users\fanta\Anaconda3\envs\py36:

The following NEW packages will be INSTALLED:

    pip:            9.0.1-py36_1
    python:         3.6.1-2
    setuptools:     27.2.0-py36_1
    vs2015_runtime: 14.0.25123-0
    wheel:          0.29.0-py36_0

Proceed ([y]/n)?

#
# To activate this environment, use:
# > activate py36
#
# To deactivate this environment, use:
# > deactivate py36
#
# * for power-users using bash, you must source
#


C:\Users\fanta>activate py36

(py36) C:\Users\fanta>python
Python 3.6.1 |Continuum Analytics, Inc.| (default, May 11 2017, 13:25:24) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'cv2'
>>>

如果我尝试从任何Anaconda环境外部导入cv2包，我会收到不同的错误，请参阅下文：

(py36) C:\Users\fanta>deactivate py36

C:\Users\fanta>python
Python 3.6.0 |Anaconda 4.3.1 (64-bit)| (default, Dec 23 2016, 11:57:41) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: DLL load failed: The specified module could not be found.
>>>

如何在Anaconda环境中导入构建的cv2包？

谢谢！

Answer 1

原来py36文件的正确位置（对于我的C:\Users\fanta\Anaconda3\envs\py36\Lib Anaconda环境）：

ImportError: DLL load failed: The specified module could not be found.

然后我得到了C:\opencv32\build\install\x64\vc15\bin

修复ImportError：

将带有OpenCV内置DLL的目录添加到PATH 环境变量（C:\opencv32\build\install\x64\vc15在我的情况下）;
设置OPENCV_DIR（到我的(name + "\t" + socialNum + "\t" + cellNum + "\t" + tickNum + "\n") 情况）。

最后我在Anaconda环境中安装了numpy和matplotlib。

现在使用Visual Studio 2017从源代码构建的OpenCV 3.2可以正常工作。

如何在Anaconda环境中使用源代码构建OpenCV 3.2软件包？

1 个答案: