I'm having problems running python3 with cv2. When I try to run an script with cv2.namedWindow I get "OpenCV Error: Unspecified error (The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script) in cvNamedWindow, file /io/opencv/modules/highgui/src/window.cpp, line 565"
I have configure opencv 3.2 with this flags:
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON -D WITH_QT=ON -D WITH_GTK=ON -D WITH_OPENGL=ON ..
But allwais fail.
I think that I have a problem in the installation.
sudo -H pip3 install cv2
In the summary of the cmake I can read:
-- General configuration for OpenCV 3.2.0-dev =====================================
-- Version control: 3.2.0-373-gf109c01
--
-- Platform:
-- Timestamp: 2017-05-30T15:50:58Z
-- Host: Linux 4.4.0-77-generic x86_64
-- CMake: 3.5.1
-- CMake generator: Unix Makefiles
-- CMake build tool: /usr/bin/make
-- Configuration: RELEASE
....
-- GUI:
-- QT 5.x: YES (ver 5.5.1)
-- QT OpenGL support: YES (Qt5::OpenGL 5.5.1)
-- OpenGL support: YES (/usr/lib/x86_64-linux-gnu/libGLU.so /usr/lib/x86_64-linux-gnu/libGL.so)
-- VTK support: NO
....
-- Python 3:
-- Interpreter: /usr/bin/python3 (ver 3.5.2)
-- Libraries: /usr/lib/x86_64-linux-gnu/libpython3.5m.so (ver 3.5.2)
-- numpy: /usr/local/lib/python3.5/dist-packages/numpy/core/include (ver 1.12.1)
-- packages path: lib/python3.5/dist-packages
But inside python3 with
>>> import cv2
>>> print(cv2.getBuildInformation())
I get:
General configuration for OpenCV 3.2.0 =====================================
Version control: 3.2.0
GUI:
QT: NO
GTK+: NO
GThread : YES (ver 2.12.3)
GtkGlExt: NO
OpenGL support: NO
VTK support: NO
I dont know how to tell python3 to use my opencv compilation. I did make; make install and I have opcencv2.4 installed with apt-get.