Towards Large-Scale Incremental Dense Mapping using Robot-centric Implicit Neural Representation

1. Introduction

Robot-centric Implicit Mapping (RIM) is designed for large-scale incremental dense mapping. This method employs a hybrid representation, encoding shapes with implicit features via a multi-resolution voxel map and decoding signed distance fields through a shallow MLP. We advocate for a robot-centric local map to boost model training efficiency and curb the catastrophic forgetting issue. A decoupled scalable global map is further developed to archive learned features for reuse and maintain constant video memory consumption.

Authors: Jianheng Liu, and Haoyao Chen from the Networked RObotics and Sytems Lab, HITSZ

[Paper][Bilibili][Youtube]

If you use RIM for your academic research, please cite the following paper.

@ARTICLE{liu2023towards,  
  author={Liu, Jianheng and Chen, Haoyao}, 
  journal={arXiv preprint arXiv:2306.10472},
  title={Towards Large-Scale Incremental Dense Mapping using Robot-centric Implicit Neural Representation},   
  year={2023}}

2. Installation

Tested on Ubuntu 20.04, ROS Noetic

• We use RVIZ for visualization for now. Please install ROS Noetic following the official guide.
• Mesh tools

  sudo apt install ros-noetic-mesh-tools

• Dependencies

  sudo apt-get install libdw-dev

• RIM

  mkdir -p rimv2_ws/src
  cd rimv2_ws/src
  git clone https://github.com/HITSZ-NRSL/RIM.git --recursive
  
  # LibTroch: https://pytorch.org/get-started/locally/
  # Tested on: 
  # - CUDA/Torch: 11.3/1.13.0, 11.8/2.0.0
  wget https://download.pytorch.org/libtorch/cu118/libtorch-cxx11-abi-shared-with-deps-2.0.0%2Bcu118.zip
  # for other cuda version use the following command to download the corresponding version of libtorch(cuda11.3 for example):
  # wget https://download.pytorch.org/libtorch/nightly/cu113/libtorch-cxx11-abi-shared-with-deps-latest.zip
  unzip -d RIM/rim/thirdparty libtorch-cxx11-abi-shared-with-deps-*.zip
  
  cd ..
  catkin_make

3. Data Preparation

• Dependencies

  pip install open3d==0.18.0

3.1. Replica

sh src/RIM/scripts/data_download/download_replica.sh
sh src/RIM/scripts/data_convert/convert_replica_to_kitti_format.sh src/RIM/data/Replica

3.2. MaiCity

sh src/RIM/scripts/data_download/download_maicity.sh

4. Usage

roscore
source devel/setup.zsh
# source devel/setup.bash

rosrun neural_slam neural_slam_node src/RIM/rim/config/replica/replica.yaml src/RIM/data/Replica/room1_kitti_format

# online visualization
roslaunch neural_slam rviz.launch

Press s + Enter to output mesh.

5. Visualization

python src/RIM/scripts/visualization/mesh_viewer.py --view_config_file src/RIM/scripts/config/replica/room1.txt --mesh_file src/RIM/data/Replica/room1_mesh.ply

• ctrl+9: vis normal
• ctrl+p: save screenshot to the current directory

6. Acknowledgement

Thanks for great repositories including NICE-SLAM and SHINE-Mapping, sharing scripts for dataset downloading and metrics evaluation.