, generally speaking.
- Signals, as provided by spectrometers and processed individually
- Images, from the ground using microscopes and spectrometers to airborne or satellite sensors, up to astrophysical data
- Models: models of the sensors or of the sensed scene, including physical considerations
we mean everything from the acquisition, the calibration to the analysis (image processing, signal processing, feature extraction, dimension reduction, unmixing and source separation, classification).