Multispectral imagery

Macbeth color chart (Fig. 1)

While in conventional color imaging, three different images corresponding to the Red Green and Blue colors are grabbed, in multispectral imagery more images are snapped, each image corresponding to a very narrow band of the visible spectrum.

This provides a much clearer definition of the light reflected from a surface and can thus access to features not visible to the naked eye.

Spectral bands can be selected based on wavelength characteristics of materials or products to be analyzed.

Examples of data taken from multi-spectral imagery : each pixel of the image (figure 1) contains spectral information (graph below)