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I.hyper

DESCRIPTION

The purpose of i.hyper is to provide a complete toolset for hyperspectral data processing in GRASS. It enables importing, preprocessing, visualization and exporting of hyperspectral datasets (raster_3d).

NOTES

Modules in the i.hyper suite operate together to handle hyperspectral workflows. They include tools for data import, spectral preprocessing, visualization, and export, fully integrated with the GRASS 3D raster environment.

The i.hyper toolset requires GRASS 8.5 or newer.

POSSIBLE ROAD MAP

  • Integration of field spectrometry data
  • Support for regression and classification tasks
  • Improved read and write performance, including faster 3D garray access
  • Hyperspectral 3D raster map visualization
  • Importers for additional data (OCI, HySIS, DESIS, Hyperion)
  • Additional preprocessing modules (for example wavelet transform)
  • Aerial imagery modules with multi-sensor harmonization
  • Refactoring Python components to native GRASS where possible
  • Tutorial and example workflows

DEPENDENCIES

Core Python dependency:

  • NumPy

Optional dependencies by module or format:

  • SciPy: preprocessing utilities and optional Tanager BASIC gap filling
  • scikit-learn: dimensionality reduction in i.hyper.preproc
  • Matplotlib: plotting in i.hyper.explore
  • rasterio: EnMAP import
  • pyproj: PRISMA and Tanager georeferencing helpers
  • h5py: PRISMA and Tanager import, and HDF5 export
  • zarr: Zarr export
  • GDAL Python bindings (osgeo.gdal): GeoTIFF metadata writing in i.hyper.export
  • GDAL command line tools (gdalwarp): EnMAP L1B import

Additional GRASS addon:

  • r3.what: required by i.hyper.explore

After dependencies are installed, the toolset can be added to GRASS using:

::: code

g.extension extension=i.hyper

:::

SEE ALSO

i.hyper.import, i.hyper.preproc, i.hyper.metadata, i.hyper.explore, i.hyper.composite, i.hyper.export, i.hyper.specresamp, r3.what

AUTHORS

Alen Mangafić and Tomaž Žagar, Geodetic Institute of Slovenia

SOURCE CODE

Available at: i.hyper source code (history)
Latest change: Wednesday Sep 16 14:49:52 2026 in commit 9b0a4cb