The data is of the following structure:

CORNING_HSI/
CORNING_HSI/<material>/
CORNING_HSI/comb/
CORNING_HSI/_class_masks/
CORNING_HSI/_rgb/

INNOSPEC_REDEYE/
INNOSPEC_REDEYE/<material>/
INNOSPEC_REDEYE/comb/
INNOSPEC_REDEYE/_class_masks/
INNOSPEC_REDEYE/_rgb/

SPECIM_FX10/
SPECIM_FX10/<material>/
SPECIM_FX10/comb/
SPECIM_FX10/_class_masks/
SPECIM_FX10/_rgb/

where each folder corresponds to one of the three hyperspectral sensors and
* the <material>/ subfolders contain the preprocessed (referenced, extracted and resized) recordings of the respective material class,
* the comb/ subfolder contains some recordings of multiple material classes together (for validation/testing purposes),
* the _rgb/ subfolder contains an RGB image version of each recording (for visualization),
* the _class_masks/ subfolder contains the pixel-wise annotations,
respectively.

The naming of the individual recordings is of the structure <material>_<id>_<side>.