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Outputs

ENVI export (*_envi.img/.hdr)

Corrected ENVI (*_brdfandtopo_corrected_envi.*)

  • What: Topo+BRDF-corrected cube with JSON sidecar.
  • Produced by: Stage 3
  • Example: ..._brdfandtopo_corrected_envi.img + ..._brdfandtopo_corrected_envi.json
  • Next: ConvolutionSchemas

Convolved ENVI (*_..._envi_<sensor>.*)

  • What: Resampled to target sensor bandpasses.
  • Produced by: Stage 4
  • Example: ..._brdfandtopo_corrected_envi_OLI.img
  • Next: Parquet exportSchemas

Parquet (per product)

  • What: Tidy columns for pixels and bands, validated before reuse.
  • Produced by: Stage 5
  • Behavior: Existing *.parquet sidecars are checked with pyarrow.parquet.read_schema. Invalid or corrupted files are deleted and regenerated automatically during export.
  • Next: MergePreview

Merged parquet

  • What: Analysis-ready combined table.
  • Produced by: Stage 6
  • Example: <prefix>_merged_pixel_extraction.parquet
  • Next: QA panel