Kubelka-Monk theory

As described above, scattering in the IR region is less effective than in the visible region. For those familiar with Kubelka Monk theory [15], it is clear that optical absorption will become more effective as scattering decreases. The end result is that when mixing colorants, the absorptions are additive. 

While commercial color matching software focuses on the visible range, the theory may use Kubelka Monk theory outside the 400-700 nm range. Detrie [16] demonstrated a simplified application of Kubelka Munk theory could be used to predict reflectance curves in the infrared region (see Figure 24.14). 

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