Hyperspectral Imaging
Hyperspectral Imaging can classify objects according to their chemical composition, that is not affected by the colour of the materials. The human eye and colour cameras see visible light only in three bands (red, green, and blue), while hyperspectral cameras capture hundreds to thousands of spectral bands - making the invisible visible.
This contacless and non-destructive method quantitatively measures chemical properties such as: dry mass, protein, fat, sugar, salt, starch, moisture, oil, or calorific value.

Inductive Imaging
Inductive Imaging senses the electrical and magnetic properties of different materials. The main application is the detection of both ferrous and non-ferrous metals. Various metals can be detected and sorted out from a bulk flow.

Sensor-Fusion
Sometimes only a combination of various measurement techniques can deliver the results needed for a particular sorting application. EVK offers the software and hardware tools needed to combine all our imaging techniques into a single decision making Sensor-Fusion module that can logically couple the different classification results from various individual sensors. The unified classification result is computed in real-time and will steer the ejection unit appropriately. In this way measurements ranging from chemical composition, colour, electrical conductivity, size, structure and shape will improve the sorting accuracy for very complex applications.

Dr Matthias Kerschhaggl Introduces his Digital Conference Talk - Video