Ubuntu16.04安装视觉SLAM环境（g2o）

1、首先在github上下载g2o图优化库

git clone https://github.com/RainerKuemmerle/g2o.git

2、运行安装以下依赖库

sudo apt-get install libcholmod3.0.6
sudo apt-get install libsuitesparse-dev
sudo apt-get install freeglut3 freeglut3-dev freeglut3-dbg
sudo apt-get install libqglviewer2 libqglviewer-dev libqglviewer-doc
sudo apt-get install libeigen3-dev libeigen3-doc

3、开始安装g2o，先进入g2o的目录内，然后开启终端，依次运行下列命令：

mkdir build
cd build/
cmake ..
make
sudo make install

至此，g2o图优化库安装完毕！