The fundamental operations in the SLAM.
sudo apt-get install libeigen3-dev
sudo updatedb
locate eigen3
default location "/usr/include/eigen3"
https://github.com/stevenlovegrove/Pangolin
sudo apt-get install libglew-dev
cd [path-to-pangolin]
mkdir build
cd build
cmake ..
make
sudo make install
mkdir build
cd build
cmake ..
make
./eigenMatrix
./coordinateTransform
./plotTrajectory
./useGeometry
./visualizeGeometry