Imaging Spectroscopy for Scene Analysis

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 ISSA1

Technology that quickly and accurately determines material properties, object composition,and concentrations of material components.

Objects absorb, emit and reflect light at specific wavelengths.  This gives every object its own unique pattern, known as “ spectral signatures”.  Imaging spectroscopy enables you to see these “spectral signatures”.  Processing of these images enables the spectral signature to be analysed and the material-type to be automatically classified.

With the advent of new camera technologies, imaging spectroscopy is now becoming available for land-based, close range inspection and image acquisition. This opens-up a wide variety of opportunities including applications in recycling, health, environmental management, and, eventually, in professional and consumer photography.

ISSA8 

Example 1: Early Plant Disease Detection

ISSA2 

Early detection of pathogens and segmentation of chlorophyll
Used for inspecting plants in greenhouses (e.g. in capsicum plants) 

Example 2: Food sorting by material classification enhanced with shape information

ISSA3 

 An effective approach when 2 materials are very close in composition
We train a classifier on material signatures and shape signatures of objects
Objects whose spectra is very similar can be accurately classified (e.g. distinguishing nut types, grains, etc).