rogarg / mav_active_3d_planning

Modular framework for online informative path planning.

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mav_active_3d_planning

mav_active_3d_planning is a modular framework for online informative path planner (IPP) design. We provide a modular framework for creating, evaluating and employing primarily sampling based, receding horizon algorithms that optimize a gain while minimizing a cost.

Online-IPP for Exploration (left), 3D Reconstruction (right) & more. git_gif

Table of Contents

Credits

Setup

Examples

Documentation

For additional information please see the wiki.

Credits

Paper and Video

If you find this package useful for your research, please consider citing our paper:

  • Lukas Schmid, Michael Pantic, Raghav Khanna, Lionel Ott, Roland Siegwart, and Juan Nieto, "An Efficient Sampling-based Method for Online Informative Path Planning in Unknown Environments", in IEEE Robotics and Automation Letters, vol. 5, no. 2, pp. 1500-1507, April 2020
@ARTICLE{Schmid20ActivePlanning,
  author={L. {Schmid} and M. {Pantic} and R. {Khanna} and L. {Ott} and R. {Siegwart} and J. {Nieto}},
  journal={IEEE Robotics and Automation Letters},
  title={An Efficient Sampling-Based Method for Online Informative Path Planning in Unknown Environments},
  year={2020},
  volume={5},
  number={2},
  pages={1500-1507},
  keywords={Motion and path planning;aerial systems;perception and autonomy;reactive and sensor-based planning},
  doi={10.1109/LRA.2020.2969191},
  ISSN={2377-3774},
  month={April},
}

The planner presented in the paper is given in active_3d_planning_app_reconstruction/cfg/planners/reconstruction_planner.yaml. A video of the approach is available here.

Setup

Packages

The mav_active_3d_planning package is divided into separate packages, such that only the dependencies necessary for your application package need to be built.

Although packages are organized for the catkin workflow, the core package can be built as a stand-alone library for non-ROS use. All packages with a short description are listed below.

Dependencies

Packages and their dependencies:

Installation

Installation instructions for Linux.

Prerequisites

  1. If not already done so, install ROS (Desktop-Full is recommended).

  2. If not already done so, create a catkin workspace with catkin tools:

sudo apt-get install python-catkin-tools
mkdir -p ~/catkin_ws/src
cd ~/catkin_ws
catkin init
catkin config --extend /opt/ros/melodic  # exchange melodic for your ros distro if necessary
catkin config --cmake-args -DCMAKE_BUILD_TYPE=Release
catkin config --merge-devel

Installation

  1. Move to your catkin workspace:
cd ~/catkin_ws/src
  1. Install system dependencies:
sudo apt-get install python-wstool python-catkin-tools
  1. Download repo using a SSH key or via HTTPS:
git clone git@github.com:ethz-asl/mav_active_3d_planning.git # SSH
git clone https://github.com/ethz-asl/mav_active_3d_planning.git # HTTPS
  1. Download and install the dependencies of the packages you intend to use.

    • Full Install: dependencies of all packages can be installed using rosinstall:
    # system dependencies, replace melodic with your ros distro if necessary:
    sudo apt-get install ros-melodic-cmake-modules ros-melodic-control-toolbox ros-melodic-joy ros-melodic-octomap-ros ros-melodic-mavlink ros-melodic-geographic-msgs autoconf libyaml-cpp-dev protobuf-compiler libgoogle-glog-dev liblapacke-dev libgeographic-dev
    pip install future unrealcv
    
    # If you already intialized ws tool use 'wstool merge -t'
    wstool init . ./mav_active_3d_planning/mav_active_3d_planning_ssh.rosinstall # SSH
    wstool init . ./mav_active_3d_planning/mav_active_3d_planning_https.rosinstall # HTTPS
    wstool update
    • Partial Install: Install dependencies of the packages you intend to use (listed above) and remove unwanted packages from mav_active_3d_planning/package.xml as well as their source folders.
  2. Source and compile:

source ../devel/setup.bash
catkin build mav_active_3d_planning # Builds this package only
catkin build # Builds entire workspace, recommended for full install.

Data Repository

Related ressources, such as experiment scenarios and ground truth point clouds, can be downloaded from here.

Examples

Configuring a Planner

The active_3d_planning_app_reconstruction is an application package, that launches an active_3d_planner. A verbose example of how planner configurations are specified is given in cfg/planners/example_config.yaml. The example planner uses local motion primitives to expand new segments and the number of unknown voxels as gain formulation. To see the planner in action, start an unreal_cv_ros game, e.g. CityBuilding, make sure to tab out of game control with Ctrl+Shift+F1 and then run

roslaunch active_3d_planning_app_reconstruction example.launch

The planner will be built from the config file and visualized in RVIZ. A useful parameter to set is verbose_modules: true, as all available params of all built modules will be printed to console.

mav_3d_ex_config

A local motion primitve based planner starting exploration.

Run an Experiment

In order to record data of the example planner, run

roslaunch active_3d_planning_app_reconstruction run_experiment.launch planner_general_config:=
planners/example_config.yaml data_directory:=/path/to/my_data_dir

This will collect and store raw data in a new folder in my_data_dir. When the experiment has finished by time limit (30 minutes) or by pressing Ctrl+C, run

roslaunch active_3d_planning_app_reconstruction evaluate_experiment.launch target_directory:=
/path/to/my_data_dir gt_file_path:=/path/to/CityBuilding/gt_surface_pcl.ply

to evaluate the raw data. When the process is finished, the created data directory contains a folder 'Graphs', containing the evaluation results as well as a folder 'Meshes', which can be visualized using e.g. CloudCompare.

SimulationOverview Performance overview of the planner over the course of the simulated experiment.

PerformanceOverview Distribution of computation time for the different modules. The majority is expended for gain computation (red). Notice that the voxblox map serialization increases as the map grows (dark grey).

mav_active Final reconstruction mesh and error coloring visualized in CloudCompare.

About

Modular framework for online informative path planning.

License:BSD 3-Clause "New" or "Revised" License


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