Multi-Spectral Remote Sensing Image Retrieval Using Geospatial Foundation Models

• URL: http://arxiv.org/abs/2403.02059v2
• Date: Wed, 22 May 2024 08:42:45 GMT
• Title: Multi-Spectral Remote Sensing Image Retrieval Using Geospatial Foundation Models
• Authors: Benedikt Blumenstiel, Viktoria Moor, Romeo Kienzler, Thomas Brunschwiler,
• Abstract summary: This work proposes to use Geospatial Foundation Models, like Prithvi, for remote sensing image retrieval. We introduce two datasets to the retrieval task and observe a strong performance. Prithvi processes six bands and achieves a mean Average Precision of 97.62% on BigEarthNet-43 and 44.51% on ForestNet-12.
• Score: 0.562479170374811
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Image retrieval enables an efficient search through vast amounts of satellite imagery and returns similar images to a query. Deep learning models can identify images across various semantic concepts without the need for annotations. This work proposes to use Geospatial Foundation Models, like Prithvi, for remote sensing image retrieval with multiple benefits: i) the models encode multi-spectral satellite data and ii) generalize without further fine-tuning. We introduce two datasets to the retrieval task and observe a strong performance: Prithvi processes six bands and achieves a mean Average Precision of 97.62% on BigEarthNet-43 and 44.51% on ForestNet-12, outperforming other RGB-based models. Further, we evaluate three compression methods with binarized embeddings balancing retrieval speed and accuracy. They match the retrieval speed of much shorter hash codes while maintaining the same accuracy as floating-point embeddings but with a 32-fold compression. The code is available at https://github.com/IBM/remote-sensing-image-retrieval.

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