---
id: oil_spill
type: element
name: Oil spill
task_types: [semantic_segmentation, anomaly_detection]
preferred_heads: [validity, context, semantic_segmentation]
label_formats: [mask, polygon]
positive_label: oil_spill
negative_policy: unlabeled_is_ignore
typical_sensors: [SAR, MSI, OLI]
typical_resolutions_m: [10, 30]
---

# Oil Spill

Oil spill extraction is often sensor-specific. SAR imagery is especially useful,
but dark slicks can be confused with low wind, biogenic films, rain cells, and
calm water.

## Required Context

- Sensor type must be explicit.
- Use hard negatives for natural dark water phenomena.
- Do not treat unlabeled water anomalies as definite negatives.