| --- |
| license: apache-2.0 |
| task_categories: |
| - image-text-to-text |
| language: |
| - en |
| tags: |
| - satellite |
| - land-cover |
| - lfm-vl |
| - geospatial |
| - sat |
| - earth |
| - observation |
| - land |
| - sft |
| - sentinel |
| - mapbox |
| - terra |
| pretty_name: NU-TONIC raw SFT Full |
| size_categories: |
| - 1M<n<10M |
| --- |
| |
| # NU-TONIC raw SFT Full |
|
|
| **Satellite imagery** and aligned **land-cover** outputs packaged as **image–text** rows for fine-tuning in SFT format. JSONL user prompts name the modality (satellite imagery vs. overhead context) where it matters. |
|
|
| ## Provenance |
|
|
| - **Locations:** GeoGuessr-style POIs (source: `stochastic/random_streetview_images_pano_v0.0.2`) |
| - **Optical:** Sentinel-2 multispectral optical COGs from a public STAC catalog, **blue/green/red** or **visual** preview, percentile-stretched to uint8. |
| - **Labels:** per-pixel land-cover raster from Earth Engine, **reprojected** to the same 10 m grid as the RGB stack, then tiled and **nearest-neighbor** downsampled with the mask. |
| - **Context:** optional geographic overhead still per POI (token-based static map API) under `mapbox_stills/`. |
| - **Rows:** global caption + grounding per tile of satellite imagery, plus **per–land-cover-class** caption . |
| - **Downstream format:** `messages[]` with `image` + text, aligned with conventions. |
|
|
| ## Layout |
|
|
| - `images/*.png` — RGB chips (downsampled, e.g. 224×224). |
| - `overlays/*.png` — optional bbox visualization per JSONL row (``--write-bbox-overlays``). |
| - `mapbox_stills/*.png` — overhead context still per POI (when API token set). |
| - `data/train.jsonl`, `data/validation.jsonl`, `data/test.jsonl` — splits hashed by `poi_id`. |
| - `metadata/*.json` — per-tile sidecars (coordinates, scene id, `land_cover_label_meta` counts/shapes only). |
|
|
|
|
| ## Licenses |
|
|
| Respect the **STAC** data provider terms, **Earth Engine** terms for label rasters, the **MapBox** ToS for optional stills, and the **MIT** HF pano dataset license for source coordinates. |
|
|
|
|
| --- |
|
|
| ## Hub layout (sharded) |
|
|
| - This snapshot was processed so that ``images/``, ``mapbox_stills/``, ``overlays/``, and ``metadata/`` use at most **8000** files per leaf directory (Hub git limit: 10k files per directory). JSONL paths may include ``sNNNNN/`` shard segments where needed. |
