Abbreviation for hyperspectral imagery, which consists of multiple spectral bands derived from the electromagnetic spectrum. The different wavelength bands at the same geolocation can be from the visible, infrared, or ultraviolet spectral regions. These spectral bands are combined or subtracted from each other for processing and analysis.
The difference between HSI and multispectral imagery (MSI) is the number of spectral bands. HSI can contain hundreds of bands, while MSI contains far less (several to tens). HSI is typically collected from one sensor, and MSI from multiple sensors.
The additional spectral bands contained in hyperspectral imagery allow for sophisticated analysis.
Tags: imagery