Axine Labs
Free / commercial imagery

Auditoría de Tala Selectiva

Claros del dosel, pistas de arrastre y patios de acopio captados por desmezcla subpíxel, verificados contra el límite de su concesión.

Desmezcla subpíxel para pistas de arrastre, perturbación de claros del dosel y cumplimiento de cosecha sobre una concesión.

Auditoría de Tala Selectiva
In view

Harvest gaps, skid trails and landing decks separated by their non-photosynthetic fraction.

QUÉ ENCUENTRA

Qué detecta.

MaterialEntorno típicoQué puede confundirlo
Selective Logging Gaps & Skid CorridorsTropical rainforests, temperate hardwood concessions, and conservation reservesNatural tree-fall gaps and windthrow patches

MÉTODO

Cómo funciona.

Entra reflectancia calibrada, y cada píxel se ajusta contra una biblioteca pública de referencia.

01Step 1

Reflectance ingest

Scenes are read at surface reflectance and reprojected onto a common grid, never resampled.

02Step 2

Fraction unmixing per pixel

Each pixel is decomposed into green vegetation, non-photosynthetic vegetation and soil. Slash and fresh soil are what a selective harvest leaves behind, and both sit in the second and third fractions.

03Step 3

Linear feature extraction

Directional filters connect skid tracks and landings that would be unremarkable pixel by pixel.

04Step 4

Overlay against the concession boundary

Disturbance polygons are intersected with the boundary you supply, and the area inside and outside is reported separately. No timber volume is estimated, because reflectance does not carry it.

ESPECIFICACIONES

Qué obtiene, y sobre qué corre.

Valores entregadosCover fractions, floating point, summing to one where the pixel is evaluable
SalidaForest disturbance polygons with cover fractions
Plazo de entregaTropical cloud, not processing, decides when a usable scene exists
Formatos
GeoJSON Disturbance VectorsCloud-Optimized GeoTIFF (COG)Provenance record (scene ids, method version, boundary used)

Condiciones que necesita

Sun angle limit:50°
Cloud cover limit:10%
Vegetation cover limit:100%

Method and checks are documented in Axine Applied Spectroscopy Paper #4 · Section 6.1.

Leer el artículo

Alcance

Works on gaps in the canopy. A tree taken out without breaking the crown above it leaves nothing to see.