How to import OpenCV

[soerentsch]

Hey Forum,

Has anyone figured out how to import OpenCV?

Currently i failed by the import of numpy, seems i have to build a x64 numpy >_<

Cheers

[stephan]

I have the same problem here, does anyone know where I can get a version of numpy that I can just copy to /lib/site-packages on Windows x64?

[Alexey Pasumansky]

Hello stephan,

If you are using PhotoScan Pro 1.3, you can install the external modules running python.exe from PhotoScan Pro installation folder with the following parameters (for example, fr numpy module):

Code: [Select]

/Agisoft/PhotoScan Pro/python/python.exe -m pip install numpy

[stephan]

Wow, that was quick and easy, thanks Alexey

[v4ven27]

Hi Alexey,

I'm trying to add numpy with Photoscan version 1.3.2 on Ubuntu 16.04 by running the following command in the photoscan-pro/python/bin directory: 

Code: [Select]

./python3.5 -m pip install numpy
But I get the following error while:

Traceback (most recent call last):
  File "/home/ubuntu/photoscan-pro/python/lib/python3.5/runpy.py", line 174, in _run_module_as_main
    mod_name, mod_spec, code = _get_module_details(mod_name, _Error)
  File "/home/ubuntu/photoscan-pro/python/lib/python3.5/runpy.py", line 133, in _get_module_details
    return _get_module_details(pkg_main_name, error)
  File "/home/ubuntu/photoscan-pro/python/lib/python3.5/runpy.py", line 109, in _get_module_details
    __import__(pkg_name)
  File "/home/ubuntu/photoscan-pro/python/lib/python3.5/site-packages/pip/__init__.py", line 16, in <module>
    from pip.vcs import git, mercurial, subversion, bazaar  # noqa
  File "/home/ubuntu/photoscan-pro/python/lib/python3.5/site-packages/pip/vcs/subversion.py", line 9, in <module>
    from pip.index import Link
  File "/home/ubuntu/photoscan-pro/python/lib/python3.5/site-packages/pip/index.py", line 30, in <module>
    from pip.wheel import Wheel, wheel_ext
  File "/home/ubuntu/photoscan-pro/python/lib/python3.5/site-packages/pip/wheel.py", line 39, in <module>
    from pip._vendor.distlib.scripts import ScriptMaker
  File "/home/ubuntu/photoscan-pro/python/lib/python3.5/site-packages/pip/_vendor/distlib/scripts.py", line 14, in <module>
    from .compat import sysconfig, detect_encoding, ZipFile
  File "/home/ubuntu/photoscan-pro/python/lib/python3.5/site-packages/pip/_vendor/distlib/compat.py", line 66, in <module>
    from urllib.request import (urlopen, urlretrieve, Request, url2pathname,
ImportError: cannot import name 'HTTPSHandler'

How can I resolve this issue? Thanks!

[v4ven27]

I solved this issue by creating a symlink from the distribution numpy installation /usr/local/lib/python3.5/dist-packages/numpy to ~/photoscan-pro/python/lib/site-packages

[Alexey Pasumansky]

Hi all,

You can read about how to install numpy or other packages on the following page:
https://agisoft.freshdesk.com/solution/articles/31000136860-how-to-install-external-python-module-to-photoscan-professional-pacakge
 
It is impossible to use precompiled opencv-python package from PhotoScan on Linux, because opencv-python is compiled with Qt 4.8, while PhotoScan uses Qt 5.6, and this Qt versions conflict leads to crash on importing cv2 from PhotoScan.
 
But you can compile and add cv2 module to PhotoScan with this script:
https://gist.github.com/PolarNick239/fc02a69ae3082e72704d220e77abf4a0

Also you can refer to this post regarding the following questions:
- how to pass image from PhotoScan project to OpenCV,
- how to fix incorrect channels order (PhotoScan RGB to OpenCV BGR),
- how to display OpenCV image in window.