Function time_inc

src/STDesc.cpp:246–252

}

double time_inc(std::chrono::_V2::system_clock::time_point &t_end,
                std::chrono::_V2::system_clock::time_point &t_begin) {
  return std::chrono::duration_cast<std::chrono::duration<double>>(t_end -
                                                                   t_begin)
             .count() *
         1000;
}

pcl::PointXYZI vec2point(const Eigen::Vector3d &vec) {
  pcl::PointXYZI pi;