Image-State Twin Discovery
Gold Alteration SWIR Ratio Heatmap
The source image remains the authoritative visual artifact. Quantitative metrics, region status, and advisory boundaries resolve against the declared input set.
Declared Inputs
- source_image: authoritative_visual_artifact — https://www.sovrient.com/image-twins/gold-alteration-swir-ratio-heatmap/source.png
- source_witness: authoritative_metrics_and_policy_context — https://www.sovrient.com/image-twins/gold-alteration-swir-ratio-heatmap/source_witness.json
- source_region_map: authoritative_region_geometry_and_status — https://www.sovrient.com/image-twins/gold-alteration-swir-ratio-heatmap/source_region_map.json
- source_visual_summary: authoritative_visual_generation_context — https://www.sovrient.com/image-twins/gold-alteration-swir-ratio-heatmap/source_visual_summary.json
Visual Surface
Overlay polygons show the four AOI regions declared in the region map sidecar. The source image remains authoritative for pixels; region geometry resolves in favor of the declared region map.
Bounded Claims
- boundary: Satellite alteration lane is advisory telemetry and does not override DT0_STRICT settlement admissibility gates.
- scope: Phase-2 computes bounded raster SWIR proxies (B11/B12-style ratio and normalized difference) on sampled pixels; lane remains advisory and non-settlement.
- provenance: This heatmap is tied to Sentinel-2 scene S2C_28PHA_20260224_0_L2A.
- quantitative: Scene-level SWIR ratio p95 = 2.285974.
- quantitative: Scene-level alteration fraction = 0.967820.
- status: All four AOI quadrants are ELEVATED under the declared region status rule.
Region Summary
| Region | Name | Status | Ratio Mean | Ratio P95 | Alteration Fraction |
|---|---|---|---|---|---|
| NW | AOI Northwest | ELEVATED | 1.495741 | 1.957253 | 0.937162 |
| NE | AOI Northeast | ELEVATED | 1.530410 | 2.097424 | 0.918988 |
| SW | AOI Southwest | ELEVATED | 1.659624 | 2.304222 | 0.952531 |
| SE | AOI Southeast | ELEVATED | 1.648835 | 2.252487 | 0.962800 |