Wrapper: Java

For Windows users

• Requirements:

• • CMAKE (tested with CMAKE 3.5.2)
• • Visual Studio (tested with Visual Studio 2015)
• • OpenCV 3 (tested with OpenCV 3.2.0)
• • Java 1.8 (tested with Java 1.8.0_121)

• Download binaries: https://github.com/andrewssobral/bgslibrary/releases/download/bgslib_java_2.0.0/bgslibrary2_java_opencv320_x64.zip

Running CMAKE with Visual Studio 2015 and OpenCV 3.2.0 (x64)

• • Working directory: bgslibrary\wrapper_java

:: Set OpenCV env
echo "Setting up OpenCV env"
set OpenCV_DIR=C:\OpenCV3.2.0\build
set PATH=%PATH%;%OpenCV_DIR%\x64\vc14\bin

:: Run CMake
echo "Running CMake"
rmdir /S /Q build_cmake
if not exist "build_cmake" mkdir build_cmake
cd build_cmake
cmake -DOpenCV_DIR=%OpenCV_DIR% -G "Visual Studio 14 Win64" ..
cd ..

• Open libbgs_java_module.sln in your Visual Studio IDE and switch to RELEASE mode

• Click on ALL_BUILD and build

• Copy libbgs_java_module.dll to bgslibrary\wrapper_java

• Copy opencv_java320.dll from C:\OpenCV3.2.0\build\java\x64 to bgslibrary\wrapper_java

• Compile Java source

:: Compile
echo "Compiling"
javac -cp .;src/;libs/opencv-320.jar src/bgslibrary/Main.java

• Run

:: Run
echo "Running Main class"
java -cp .;src/;libs/opencv-320.jar -Djava.library.path=. bgslibrary.Main

Generating JNI files (optional)

:: Generate JNI
cd src
echo "Generating JNI"
javah -cp .;../libs/opencv-320.jar bgslibrary.Main
cd ..

Video tutorial

• The video tutorial below show all steps for compiling the Java wrapper for Windows users.