Hyperspectral Imaging Scan Types

With hyperspectral imaging, you can analyze and sort any material: See what’s under the skin of an apple, detect fungicides, or examine the composition of fish or meat. In short, get a fingerprint of your sample.

For this, you need a bright, stable, and focused light source to make reliable, repeatable measurements, such as the SuperK EVO laser.

Different sorting techniques see different things

If you want to do the dorting directly in your production line, you can use different sorting techniques:

• Point scan
• Line scan (also called push broom)
• Wavelength scan
• Snapshot imaging

Laser light can be tightly focused, so the SuperK laser is well-suited for point scan, where you need a small light spot, and line scan, where you need a narrow line of light.

Reflectance, transmittance, or scattering in point and line scan

Working with point or line scanning, you can apply three sorting techniques, depending on what you want to see.

• Reflectance-based measurements are employed to study the surface properties of the samples.
• Transmission-based measurements are employed to study the properties of the bulk of the materials deeper within the samples.
• Trans-interactance?measurements are typically used to study the light interaction of the materials in a shallow volume of samples. This scattering measurement method is less sensitive to the surface properties of the sample.

Our SuperK laser can be used for hyperspectral imaging in chute feeds, conveyor belts, or channels.

You can learn more about hyperspectral imaging on our web.