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Okeinla dataset
A raw-image dataset captured for training low-light RAW enhancement and denoising models. Named after Okéinla, a small mountain in the Collines region of Benin; the first model trained on this data will share the name.
Each scene was shot on a tripod with the camera in manual mode: all settings were held constant except ISO, which was stepped across a range of values. Ground-truth (clean) exposures were captured at base ISO 100.
Camera
| Body | Sony ILCE-7CM2 (A7C II) |
| File format | Sony ARW (raw) |
| Settings | Unchanged except ISO |
Structure
Scene_XXXX/
Scene_XXXX_ISO{YYYY}_{n}.ARW # noisy shot at ISO YYYY ({n} disambiguates repeats)
gt/
Scene_XXXX_ISO100_{n}.ARW # ground-truth shots at base ISO 100
- 106 scenes (
Scene_0001…Scene_0106) - 761 noisy shots, ISO 100–51200 including intermediate stops (200, 250, 320, 400, 500, 640, 800, 1000, 1250, 1600, 2000, 2500, 3200, 4000, 5000, 6400, 8000, 10000, 12800, 16000, 20000, 25600, 32000, 40000, 51200). The exact ladder and number of shots vary per scene.
- 368 ground-truth shots at ISO 100 (1–5 per scene)
- 1129 ARW files total
Notes
- A standard EXIF scan found no GPS, capture-date, or camera serial-number tags. Sony MakerNotes remain; check them with ExifTool before publication.
- Original raw pixel data and standard photographic metadata (exposure, aperture, lens, etc.) are unmodified.
- Files contain no XMP sidecars, logs, or text annotations.
License
Copyright © Ayeda Okambawa. This dataset uses Creative Commons Attribution-ShareAlike 4.0 International. Credit Ayeda Okambawa and link to this dataset when redistributing it. Indicate changes and distribute adaptations under the applicable share-alike terms. See LICENSE for the full license text.
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