Hi Laura,
On 26-05-2015 11:21, Laura Creighton wrote:
In a message of Tue, 26 May 2015 10:24:30 -0300, Markos writes:
Hi,
I want to use OpenCV with Python.
I installed version 2.4.9
(http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.4.9/opencv-2.4.9.zip/)
in debian Squeeze running Python 2.6.6. Using the tutorial:
http://indranilsinharoy.com/2012/11/01/installing-opencv-on-linux/
(I tried to install versions 2.4.11 and 2.4.10 (in Squeeze with python
2.2.6) but I couldn't.)
You mean python 2.6.6, right?
and this package: https://packages.debian.org/source/squeeze/opencv
which is 2.1.0-3 is too old for you?
I installed this package (python-opencv) but I thought this package
would be only some API for python to use the opencv library and I
imagined that I would still have to install the opencv library from source.
What do you mean that you
tried to install versions 2.4.11 and 2.4.10 but couldn't? What
error messages did you get?
For example when trying to install the 2.4.11 version after running cmake:
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_OPENGL=ON ..
(Output of cmake at the end of message.)
and make -j2 to compile, but an error occurred after compiling 55%:
[ 55%] Building CXX object
modules/legacy/CMakeFiles/opencv_legacy.dir/src/facedetection.cpp.o
Linking CXX shared library ../../lib/libopencv_legacy.so
[ 55%] Built target opencv_legacy
make: ** [all] Erro 2
I lost some time trying to load the module cv2:
Import cv2.cv the cv
s/the/as/ ?
import cv2.cv as cv
Traceback (most recent call last):
File "<stdin>", line 1, in<module>>
ImportError: No module named cv2.cv
After a while I realized I could use the cv module. (import cv)
But still I do not understand the differences between the modules cv and
cv2.
Do you suggest any good tutorial about the differences between cv and cv2?
I will have to make many changes in python programs using cv to reuse
the code later with cv2?
Thanks,
Markos
--
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post the output you got from cmake
At the end of message.
It will probably complain that it is missing some headers, so couldn't
make libcv2.so
If you haven't installed python-dev (not just python) and numpy I
guarantee it will not find needed headers; if you have but it is
still not being made we will have to look harder at what is going wrong.
I installed the following packages:
apt-get install cmake
apt-get install build-essential
apt-get install pkg-config
apt-get install libgtk2.0-dev
apt-get install python-opencv python-dev python-numpy
apt-get install libpng12-0 libpng12-dev libpng++-dev libpng3 libpnglite-dev
libpngwriter0-dev libpngwriter0c2 zlib1g-dbg
zlib1g zlib1g-dev pngtools libjasper-dev libjasper-runtime libjasper1 libjpeg8 libjpeg8-dbg libjpeg62 libjpeg62-dev
libjpeg-progs libtiff4-dev libtiff4 libtiffxx0c2 libtiff-tools ffmpeg libavcodec-dev libavcodec52 libavformat52
libavformat-dev libswscale0 libswscale-dev openexr libopenexr6 libopenexr-dev
apt-get install libgstreamer0.10-0-dbg libgstreamer0.10-0 libgstreamer0.10-dev libgstreamer-plugins-base0.10-dev
libxine1-ffmpeg libxine-dev libxine1-bin libunicap2 libunicap2-dev libucil2 libucil2-dev libdc1394-22-dev
libdc1394-22 libdc1394-utils libv4l-0 libv4l-dev
apt-get install libqt4-dev
If it made a libcv.so for you, did it put it in a place you can see
with your PYTHONPATH?
Laura
>>> import sys
>>> print sys.path
['', '/usr/lib/python2.6', '/usr/lib/python2.6/plat-linux2',
'/usr/lib/python2.6/lib-tk', '/usr/lib/python2.6/lib-old',
'/usr/lib/python2.6/lib-dynload',
'/usr/local/lib/python2.6/dist-packages',
'/usr/lib/python2.6/dist-packages',
'/usr/lib/python2.6/dist-packages/PIL',
'/usr/lib/python2.6/dist-packages/gst-0.10',
'/usr/lib/pymodules/python2.6', '/usr/lib/pymodules/python2.6/gtk-2.0',
'/usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode']
import cv works fine but I didn't find libcv.so in my system.
I suppose that cv had already been installed by the package
python-opencv, and the compilation of the opencv didn't install cv2.
Thanks for your attention,
Markos
Return of cmake
-- Linker flags (Release):
-- Linker flags (Debug):
-- Precompiled headers: YES
--
-- OpenCV modules:
-- To be built: core flann imgproc highgui
features2d calib3d ml video legacy objdetect photo gpu ocl nonfree
contrib stitching superres ts videostab
-- Disabled: world
-- Disabled by dependency: -
-- Unavailable: androidcamera dynamicuda java python viz
--
-- GUI:
-- QT 4.x: YES (ver 4.6.3 EDITION = OpenSource)
-- QT OpenGL support: YES (/usr/lib/libQtOpenGL.so)
-- OpenGL support: YES (/usr/lib/libGLU.so
/usr/lib/libGL.so /usr/lib/libSM.so /usr/lib/libICE.so
/usr/lib/libX11.so /usr/lib/libXext.so)
-- VTK support: NO
--
-- Media I/O:
-- ZLib: /usr/lib/libz.so (ver 1.2.3.4)
-- JPEG: /usr/lib/libjpeg.so (ver 62)
-- PNG: /usr/lib/libpng.so (ver 1.2.44)
-- TIFF: /usr/lib/libtiff.so (ver 42 - 3.9.4)
-- JPEG 2000: /usr/lib/libjasper.so (ver 1.900.1)
-- OpenEXR: /usr/lib/libImath.so
/usr/lib/libIlmImf.so /usr/lib/libIex.so /usr/lib/libHalf.so
/usr/lib/libIlmThread.so (ver 1.6.1)
--
-- Video I/O:
-- DC1394 1.x: NO
-- DC1394 2.x: YES (ver 2.1.2)
-- FFMPEG: YES
-- codec: YES (ver 52.123.0)
-- format: YES (ver 52.111.0)
-- util: YES (ver 50.43.0)
-- swscale: YES (ver 0.14.1)
-- gentoo-style: YES
-- GStreamer:
-- base: YES (ver 0.10.30)
-- video: YES (ver 0.10.30)
-- app: YES (ver 0.10.30)
-- riff: YES (ver 0.10.30)
-- pbutils: YES (ver 0.10.30)
-- OpenNI: NO
-- OpenNI PrimeSensor Modules: NO
-- PvAPI: NO
-- GigEVisionSDK: NO
-- UniCap: NO
-- UniCap ucil: NO
-- V4L/V4L2: Using libv4l1 (ver 0.8.0) / libv4l2
(ver 0.8.0)
-- XIMEA: NO
-- Xine: NO
--
-- Other third-party libraries:
-- Use IPP: NO
-- Use Eigen: NO
-- Use TBB: NO
-- Use OpenMP: NO
-- Use GCD NO
-- Use Concurrency NO
-- Use C=: NO
-- Use Cuda: NO
-- Use OpenCL: YES
--
-- OpenCL:
-- Version: dynamic
-- Include path:
~/Programacao/Python/OpenCV/opencv-2.4.11/3rdparty/include/opencl/1.2
-- Use AMD FFT: NO
-- Use AMD BLAS: NO
--
-- Python:
-- Interpreter: /usr/bin/python2.6 (ver 2.6.6)
-- Libraries: NO
-- numpy:
/usr/lib/pymodules/python2.6/numpy/core/include (ver 1.4.1)
-- packages path: lib/python2.6/dist-packages
--
-- Java:
-- ant: NO
-- JNI: /usr/lib/jvm/java-6-sun/include
/usr/lib/jvm/java-6-sun/include/linux /usr/lib/jvm/java-6-sun/include
-- Java tests: NO
--
-- Documentation:
-- Build Documentation: NO
-- Sphinx: NO
-- PdfLaTeX compiler: /usr/bin/pdflatex
-- Doxygen: NO
--
-- Tests and samples:
-- Tests: YES
-- Performance tests: YES
-- C/C++ Examples: YES
--
-- Install path: /usr/local
--
-- cvconfig.h is in:
~/Programacao/Python/OpenCV/opencv-2.4.11/build
-- -----------------------------------------------------------------
--
-- Configuring done
-- Generating done
-- Build files have been written to:
~/Programacao/Python/OpenCV/opencv-2.4.11/build
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