Multi-spectral Imaging

Seeing the world beyond the visible spectrum!

WHAT IS MULTI-SPECTRAL IMAGING

All bodies reflect electromagnetic radiation but the human eye can only resolve a narrow band of “visible” wavelengths. Using new technologies we are beginning to understand a completely new area of science beyond the visible range. The measurement of these reflections is providing important information regarding soil types, vegetation characteristics and stress levels, water quality and more.

Multi-spectral imaging

EQUIPMENT

In order to “see” beyond the visible spectrum specialized equipment is required and our company makes use of a six channel sensor. Each of the channels can be uniquely filtered to record specific information from thin slices of the electromagnetic spectrum. By mapping these to a standard colour spectrum it becomes possible to perform a qualitative analysis of these bands.

MULTI-SPECTRAL IMAGING IN AGRICULTURE

Image of Chlorophyl Content

Image of Chlorophyl Content

By using carefully chosen narrow band filters it is possible to obtain a wide variety of false color images that can be used to pin point vegetation problems.

Examples of these are:

  • Normalized Difference Vegetation Index (NDVI)
  • Structural Independent Pigment Index (SIPI)
  • Water Band Index (WBI)
  • Land Condition Index (LCI)
  • Leaf Area Index (LAI)