aquila

Assess building damage from satellite images.

Table of Contents

• How it works
• Getting Started
  • Prerequisites
  • Initial setup
  • Downloading theia
  • Running the CLI
• Contributing
• Versioning
• Authors
• License
• Acknowledgments

How it works

Aquila is a data pipeline for damage assessment after natural catastrophes.

The pipeline consists of following elements:

1. Images of the xBD dataset are loaded from disk.
2. theia processes the image and outputs segmentation maps indicating building locations.
3. inundatio cuts out buildings based on the segmentation map obtained in the previous step using the flood-fill algorithm.
4. perses assesses the damage of each building.

Segmentation maps obtained from theia can be tiled. This allows for damage assessment across greater geographical areas.

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes.

Prerequisites

You will need python3 and pip3 installed on your machine. You can install it from the official website https://www.python.org/.

To install pytorch with CUDA support, conda is recommended. An installation guide is available in the conda docs: https://docs.conda.io/projects/conda/en/latest/user-guide/install/.

To be able to view und run the example notebooks on your machine, jupyter is required. An installation guide can be found on their website: https://jupyter.org/install.

Initial setup

A step by step series of examples that tell you how to get the project up and running.

Clone the git repository

git clone https://github.com/intelligenerator/aquila.git
cd aquila/
git submodule init
git config submodule.recurse true
git submodule update --init --recursive

Next, installed the required packages. This may vary based on your system hardware and requirements. Read more about pytorch installation: https://pytorch.org/get-started/locally/

conda create --name torch
conda activate torch
conda install pytorch torchvision cudatoolkit=10.2 matplotlib scikit-learn -c pytorch

To exit the virtual environment run

conda deactivate

Happy coding!

Downloading theia

You will probably want to download a set of pretrained weights for theia, the building segmentation network, to just try aquila and save some training time.

Download theia.pth from Google Drive and place this file in theia/model: https://drive.google.com/file/d/1qmKnqw9s5oAXDWJHxEhVID48KNTxbLM_/view?usp=sharing

Running the CLI

To run the aquila cli, make sure you followed the installation steps listed above.

First, activate the conda torch environment created above.

Next, you may invoke the cli. You can use some example images from the xBD dataset provided in the images/ folder, or use your own images.

To see the available options, run:

python aquila.py -h

To assess building damage on an example image, run:

python aquila.py images/hurricane_florence_2_pre_disaster.png images/hurricane_florence_2_post_disaster.png

Contributing

Please read CONTRIBUTING.md and CODE_OF_CONDUCT.md for details on our code of conduct, and the process for submitting pull requests to us.

Versioning

We use SemVer for versioning. For the versions available, see the tags on this repository.

Authors

The Intelligenerator Group - intelligenerator

See also the list of contributors who participated in this project.

License

This project is licensed under the MIT License - see the LICENSE.md file for details.

Acknowledgments

• github python gitignore template - The gitignore template
• python3 tutorial - Guide and explanations
• Contributor Covenant - Code of Conduct