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Pansharpening by convolutional neural networks in the full resolution framework

Pansharpening by convolutional neural networks in the full resolution framework (ArXiv) is a deep learning method for Pansharpening based on unsupervised and full-resolution framework training.

Cite Z-PNN

If you use Z-PNN in your research, please use the following BibTeX entry.

@article{Ciotola2022,  
         author={Ciotola, Matteo and Vitale, Sergio and Mazza, Antonio and Poggi, Giovanni and Scarpa, Giuseppe},  
         journal={IEEE Transactions on Geoscience and Remote Sensing},   
         title={Pansharpening by convolutional neural networks in the full resolution framework},   
         year={2022},  
         volume={},  
         number={},  
         pages={1-1},  
         doi={10.1109/TGRS.2022.3163887}
}

Team members

• Matteo Ciotola (matteo.ciotola@unina.it);

• Sergio Vitale (sergio.vitale@uniparthenope.it);

• Antonio Mazza (antonio.mazza@unina.it);

• Giovanni Poggi (poggi@unina.it);

• Giuseppe Scarpa (giscarpa@unina.it).

License

Copyright (c) 2021 Image Processing Research Group of University Federico II of Naples ('GRIP-UNINA'). All rights reserved. This software should be used, reproduced and modified only for informational and nonprofit purposes.

By downloading and/or using any of these files, you implicitly agree to all the terms of the license, as specified in the document LICENSE (included in this package)

Prerequisites

All the functions and scripts were tested on Windows and Ubuntu O.S., with these constraints:

• Python 3.9
• PyTorch 1.8.1 or 1.10.0
• Cuda 10.1 or 11.3 (For GPU acceleration).

the operation is not guaranteed with other configurations.

Installation

• Install Anaconda and git
• Create a folder in which save the algorithm
• Download the algorithm and unzip it into the folder or, alternatively, from CLI:

git clone https://github.com/matciotola/Z-PNN

• Create the virtual environment with the z_pnn_environment.yml

conda env create -n z_pnn_env -f z_pnn_environment.yml

• Activate the Conda Environment

conda activate z_pnn_env

• Test it

python main.py -i example/WV3_example.mat -o ./Output_Example -s WV3 -m Z-PNN --coregistration --show_results 

Usage

Before start

To test this algorithm it is needed to create a .mat file. It must contain:

• I_MS_LR: Original Multi-Spectral Stack in channel-last configuration (Dimensions: H x W x B);
• I_PAN: Original Panchromatic band, without the third dimension (Dimensions: H x W).

It is possible to convert the GeoTIff images into the required format with the scripts provided in tiff_mat_conversion.py:

python tiff_mat_conversion.py -m Tiff2Mat -ms /path/to/ms.tif -pan /path/to/pan.tif  -o path/to/file.mat

Please refer to --help for more details.

Testing

The easiest command to use the algorithm on full-resolution data:

python main.py -i path/to/file.mat -s sensor_name -m method

Several options are possible. Please refer to the parser help for more details:

python main.py -h