--- license: cc-by-4.0 tags: - Maritime Domain Awareness - Earth Observation - Ship Detection - Sentinel-1 - Sentinel-2 - SSL4EO-S12 size_categories: - 1K) around 13 US ports [1]. A majority of the imagery is over open water, but a subset contains land or are over rivers. The Sentinel-1 images are provided in GeoTIFF (`.tif`), including metadata, and constitutes the VV and VH polarizations -- in this order. In addition, we provide completely cloud-covered Sentinel-2 (S2) images for compatibility with [SSL4EO-S12-downstream](https://huggingface.co/datasets/embed2scale/SSL4EO-S12-downstream), i.e., 264x264 pixel images and the same bands for all modalities. The total size of the dataset is 14 GB, where the size of S1 adds to 2.3 GB. ## Metadata and Labels In addition to the S1 (and S2) data cubes, we provide a metadata CSV-file with information on vessel bounding box, location in latitude and longitude as well as pixel indices, and timestamp of the SSL4EO-S12 data cubes and information on the (single) ship contained (vessel AIS type code, name, IMO, MMSI, dimensions, cargo). The vessel characteristics are drawn from [AIS meta information](https://navapi.com/docs/3-8-ais-framework-definitions/). In particular, we provide: - `loc_id`: Code for center point of image - `time_id`: Code for date of S1 image - `timestamp_s1`: Unix timestamp of S1 image - `vessel_imo`: IMO of vessel - `vessel_mmsi`: MMSI of vessel - `vessel_type`: Vessel type - `vessel_name`: Vessel name - `vessel_length`: Length of vessel in meters - `vessel_width`: Width of vessel in meters - `vessel_draft`: Distance between waterline and bottom of vessel hull in meters - `vessel_cargo`: Cargo type - `vessel_longitude`: Longitude of ship center - `vessel_latitude`: Latitude of ship center - `geometry`: Bounding box of ship in WKT format - `vessel_x`: Horizontal pixel index of ship center - `vessel_y`: Vertical pixel index of ship center - `file_name`: File name of S1 and S2, without file extension We also provide [NeuCo-Bench](https://github.com/embed2scale/NeuCo-Bench)-ready label files under `labels/`. ## (Optional) Sentinel-2 datacubes for compatibility with SSL4EO-S12 Supplementary to the S1 data cubes, we provide colocated and coprojected S2 data, L1C (top-of-atmosphere) and L2A (atmospherically corrected) products. These are provided for compatibility with the other [SSL4EO-S12-downstream](https://huggingface.co/datasets/embed2scale/SSL4EO-S12-downstream) datasets. We assembled S2 data cubes with 100% cloud cover. Any [NeuCo-Bench](https://github.com/embed2scale/NeuCo-Bench) compression model utilizing both S1 and S2 modalities needs to preserve information on the ship location from S1. We designed the SSL4EO-S12 data loader such that the S1 data is copied to all four seasons of the S2 data. S2 data are provided as compressed zarr-files, with file extension `.zarr.zip`. ## Note on License This work is licensed under CC BY 4.0. It incorporates public-domain data from NOAA [1]. The vessel characteristics (name, IMO, MMSI, AIS type, dimensions, cargo) are derived from data produced by the NOAA Office for Coastal Management (Marine Cadastre) and the U.S. Coast Guard, agencies of the U.S. Government. Such material is not subject to copyright protection within the United States. Foreign copyrights may apply. The CC BY 4.0 license applies only to copyrightable contributions made by the authors and does not alter the public-domain status of the underlying NOAA data. Moreover, HuggingFace and you should never charge on using this dataset as detailed in the NOAA FAQs provided by section _Appropriate Use_ in . ## References [1] NOAA Office for Coastal Management. (2020-2024). Vessel traffic broadcast points [dataset]. Marine Cadastre. https://marinecadastre.gov.