Wrapper: Python

Dependencies:
- Boost library
- Python library

Building BGSLibrary with Python support on Windows

Tested on:
- Windows 10 Pro
- Python 2.7.13 (Anaconda Python)
- Visual Studio 2013 and 2015
- OpenCV 2.4.10 and 3.2.0
- Boost 1.64.0

Compiling Boost with Python support on Windows

Download Boost 1.64.0 from https://dl.bintray.com/boostorg/release/1.64.0/source/
Unzip at C:\boost_1_64_0
Go to command line and run:

:: Setup
.\bootstrap.bat

:: Edit project-config.jam by adding the configuration below at the end of the file.
using python
    : 2.7                            # Version
    : C:\\Anaconda2\\python.exe      # Python Path
    : C:\\Anaconda2\\include         # include path
    : C:\\Anaconda2\\libs            # lib path(s)
    : <define>BOOST_ALL_NO_LIB=1
    ;

:: For Visual Studio 2013 users
.\b2 -j1 toolset=msvc-12.0 variant=release threading=multi link=static,shared runtime-link=static,shared --build-type=complete address-model=64 --stagedir=lib64-pyconda-msvc-12.0 --with-python stage

:: For Visual Studio 2015 users
.\b2 -j1 toolset=msvc-14.0 variant=release threading=multi link=static,shared runtime-link=static,shared --build-type=complete address-model=64 --stagedir=lib64-pyconda-msvc-14.0 --with-python stage

At the end of compilation, all *.lib and *.dll files are available at:

:: For Visual Studio 2013
C:\boost_1_64_0\lib64-pyconda-msvc-12.0\lib

:: For Visual Studio 2015
C:\boost_1_64_0\lib64-pyconda-msvc-14.0\lib

Compiling BGSLibrary with Python support on Windows

Step-by-step Instructions

git clone https://github.com/andrewssobral/bgslibrary.git
cd bgslibrary\build

::---------------------------------------
:: For OpenCV 2.4.10 + Visual Studio 2013
::---------------------------------------
set OpenCV_DIR=C:\OpenCV2.4.10\build
set PATH=%PATH%;%OpenCV_DIR%\x64\vc12\bin
set BOOST_ROOT=C:\boost_1_64_0
set BOOST_LIBRARYDIR=%BOOST_ROOT%\lib64-pyconda-msvc-12.0\lib

cmake -D OpenCV_DIR=%OpenCV_DIR% -D BOOST_INCLUDEDIR=%BOOST_ROOT% -D BOOST_LIBRARYDIR=%BOOST_LIBRARYDIR% -D BGS_PYTHON_SUPPORT=ON -G "Visual Studio 12 Win64" ..

::----------------------------------
:: For OpenCV 3 + Visual Studio 2015
::----------------------------------
set OpenCV_DIR=C:\OpenCV3.2.0\build
set PATH=%PATH%;%OpenCV_DIR%\x64\vc14\bin
set BOOST_ROOT=C:\boost_1_64_0
set BOOST_LIBRARYDIR=%BOOST_ROOT%\lib64-pyconda-msvc-14.0\lib

cmake -D OpenCV_DIR=%OpenCV_DIR% -D BOOST_INCLUDEDIR=%BOOST_ROOT% -D BOOST_LIBRARYDIR=%BOOST_LIBRARYDIR% -D BGS_PYTHON_SUPPORT=ON -G "Visual Studio 14 Win64" ..

You will see something similar to:

-- The C compiler identification is MSVC 19.0.24215.1
-- The CXX compiler identification is MSVC 19.0.24215.1
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/bin/x86_amd64/cl.exe
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/bin/x86_amd64/cl.exe -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/bin/x86_amd64/cl.exe
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/bin/x86_amd64/cl.exe -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- BGSLIBRARY WITH PYTHON SUPPORT: ON
-- OpenCV ARCH: x64
-- OpenCV RUNTIME: vc14
-- OpenCV STATIC: OFF
-- Found OpenCV: C:/OpenCV3.2.0/build (found version "3.2.0")
-- Found OpenCV 3.2.0 in C:/OpenCV3.2.0/build/x64/vc14/lib
-- You might need to add C:\OpenCV3.2.0\build\x64\vc14\bin to your PATH to be able to run your applications.
-- OpenCV library status:
--     version: 3.2.0
--     libraries: opencv_calib3d;opencv_core;opencv_features2d;opencv_flann;opencv_highgui;opencv_imgcodecs;opencv_imgproc;opencv_ml;opencv_objdetect;opencv_photo;opencv_shape;opencv_stitching;opencv_superres;opencv_video;opencv_videoio;opencv_videostab;opencv_world
--     include path: C:/OpenCV3.2.0/build/include;C:/OpenCV3.2.0/build/include/opencv
-- Boost version: 1.64.0
-- Found the following Boost libraries:
--   python
-- Found PythonInterp: C:/Anaconda2/python.exe (found version "2.7.13")
-- Found PythonLibs: C:/Anaconda2/libs/python27.lib (found version "2.7.13")
-- Boost library status:
--     version: 106400
--     libraries: C:/boost_1_64_0/lib64-pyconda-msvc-14.0/lib/libboost_python-vc140-mt-1_64.lib
--     include path: C:/boost_1_64_0
-- Python library status:
--     executable: C:/Anaconda2/python.exe
--     version: 2.7.13
--     library: C:/Anaconda2/libs/python27.lib
--     include path: C:/Anaconda2/include
-- NUMPY_INCLUDE_DIR: C:\Anaconda2\lib\site-packages\numpy\core\include
-- Configuring done
-- Generating done
-- Build files have been written to: C:/bgslibrary/build

Next, open bgslibrary.sln in your Visual Studio 2015 (or 2013), check [RELEASE] mode and click on [Build].
At the end, you will see libbgs.pyd file in your C:\bgslibrary\build path.
Copy C:\bgslibrary\build\libbgs.pyd to C:\bgslibrary.
Now, copy all *.dll files from C:\boost_1_64_0\lib64-pyconda-msvc-14.0\lib (or from C:\boost_1_64_0\lib64-pyconda-msvc-12.0\lib for 2013 users) to C:\bgslibrary.
Next, go to windows console and run:

python Demo.py

Complete!

Building BGSLibrary with Python support on Linux

Tested on:
- Ubuntu 14.04 and 16.04
- Python 2.7.6 and Python 3.6.1 (Anaconda Python)
- GCC 4.8.4 and 5.4.0
- OpenCV 2.x and OpenCV 3.2
Step-by-step Instructions

git clone https://github.com/andrewssobral/bgslibrary.git

cd build
cmake -DBGS_PYTHON_SUPPORT=ON ..
make

(add 'libbgs.so' to your Python path)

cd ..
python Demo.py

Building with Anaconda Python

conda install boost

git clone https://github.com/andrewssobral/bgslibrary.git
cd bgslibrary/build

cmake -D BGS_PYTHON_SUPPORT=ON ..

:: Or (if you need to specify some paths)
cmake -D BGS_PYTHON_SUPPORT=ON \ 
  -D PYTHON_INCLUDE_DIR=$(python -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") \
  -D PYTHON_LIBRARY=$(python -c "import distutils.sysconfig as sysconfig; print(sysconfig.get_config_var('LIBDIR'))") \
  -D BOOST_INCLUDEDIR=$HOME/anaconda/include \
  -D BOOST_LIBRARYDIR=$HOME/anaconda/lib ..

make -j8

:: Add 'libbgs.so' to your Python path
export PYTHONPATH="${PYTHONPATH}:/root/bgslibrary/build"

cd ..
python Demo.py

Known Issues

error: variable type 'NumpyAllocator' is an abstract class or error: no member named 'refcount' in 'cv::Mat'
- Unsolved issue (Not compatible with OpenCV 3)
fatal error: 'numpy/ndarrayobject.h' file not found
- Solution 1:

Default Python:
export CFLAGS="-I /usr/local/lib/python2.7/site-packages/numpy/core/include $CFLAGS"

Anaconda Python:
export CFLAGS="-I $HOME/anaconda/lib/python2.7/site-packages/numpy/core/include $CFLAGS"

- Solution 2:

Default Python:
cd /usr/local/include
ln -s /usr/local/lib/python2.7/site-packages/numpy/core/include/numpy numpy

Anaconda Python:
cd $HOME/anaconda/include
ln -s $HOME/anaconda/lib/python2.7/site-packages/numpy/core/include/numpy numpy

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Wrapper: Python

Building BGSLibrary with Python support on Windows

Compiling Boost with Python support on Windows

Compiling BGSLibrary with Python support on Windows

Building BGSLibrary with Python support on Linux

Building with Anaconda Python

Known Issues

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