java+opencv4.6+wechatCode

直接使用

参看WechatQrCode

自己编译

windows编译比较简单，就不在赘述。
主要介绍下linux编译

安装依赖

sudo yum -y install ffmpeg ffmpeg-devel
sudo yum -y install git gcc gcc-c++ cmake3 cmake-gui
sudo yum -y install qt5-qtbase-devel
sudo yum install -y python36 python36-devel python36-pip python36-numpy
sudo yum -y install gtk2-devel
sudo yum -y install gstreamer*
sudo yum -y install vlc 
sudo yum install -y libpng-devel
sudo yum install -y jasper-devel
sudo yum install -y openexr-devel
sudo yum install -y libwebp-devel
sudo yum -y install libjpeg-turbo-devel
sudo yum install -y freeglut-devel mesa-libGL mesa-libGL-devel
sudo yum -y install libtiff-devel
sudo yum -y install libdc1394-devel
sudo yum -y install tbb-devel eigen3-devel
sudo yum -y install boost boost-thread boost-devel
sudo yum -y install libv4l-devel
sudo yum -y install gstreamer-plugins-base-devel
sudo yum -y install autoconf automake mercurial pkgconfig zlib-devel libtool freetype-devel make
sudo yum install -y hdf5-devel
sudo yum install -y liblas-devel atlas-devel 
sudo yum install -y gcc-gfortran
sudo yum install -y libevent-devel lua-devel openssl-devel flex mysql-devel
sudo yum install -y xz gettext-devel
sudo yum install -y tcl
sudo yum install -y openblas-devel
sudo yum install -y tesseract tesseract-devel tesseract-osd
sudo yum install -y java-1.7.0-openjdk-devel
sudo yum install -y pylint
sudo yum install -y python-flake8
sudo yum install -y vtk-devel vtk-python vtk-qt vtk
sudo yum install -y ccache
sudo yum install -y gflags gflags-devel
sudo yum install -y glog glog-devel
sudo yum install -y libpng libpng-devel
sudo yum install -y libXaw-devel freeimage freeimage-devel zziplib-devel cppunit-devel libXt-devel libX11-devel
sudo yum install -y re2c libgnomeui-devel
sudo yum install -y gcc gcc-c++ gtk2-devel gimp gimp-devel gimp-devel-tools gimp-help-browser libjpeg-devel gstreamer-devel  libraw1394-devel  jasper-devel jasper-utils swig python nasm
sudo yum install -y g++ cmake git  gtk2 libdc1394 libv4l  swig jasper libdc1394 jasper-devel jasper-utils libgphoto2 libavc1394-devel gtk+-devel yasm libpciaccess libva-freeworld libva-intel-driver phonon-backend-gstreamer

安装ant和java

如安装可滤过

yum install ant&java

下载opencv及opencv_contrib源码

https://github.com/opencv/opencv.git
https://github.com/opencv/opencv_contrib.git

设置cmake

创建build目录
mkdir build & cd build
cmake3 -D CMAKE_BUILD_TYPE=RELEASE \ -D CMAKE_INSTALL_PREFIX=/usr/local \ -D INSTALL_C_EXAMPLES=ON \ -D INSTALL_PYTHON_EXAMPLES=ON \ -D OPENCV_GENERATE_PKGCONFIG=ON \ -D OPENCV_EXTRA_MODULES_PATH=/opencv/opencv/opencv_contrib-4.5.3/modules \ ## opencv_contrib-4.5.3路径 -D BUILD_EXAMPLES=ON /opencv/opencv ## makefile的路径

开始编译

make -j8
make install
编译成功后，build/lib目录下会生成相关依赖。到此就可以使用了