et al. 2010) or other a priori knowledge are certain to play a key role in future
developments in coral reef remote sensing.
As a final note, this chapter started by highlighting the capabilities of the mantis
shrimp’s ‘hyperspectral’ eye. However, looking at the simple red–green–blue reef
Image transect
Sand proportion – CASI
QuickBird
Coral proportion – CASI
QuickBird
Water absorption – CASI
QuickBird
Water backscatter – CASI
QuickBird
Bathymetry – CASI
QuickBird
Benthic light product -CASI
QuickBird
(g)
(f)
(e)
(d)
(c)
(b)
(a)
Fig. 4.8 Uncertainty propagation through a physics-based inversion model incorporating six
benthic types represented by thirteen spectral reflectances (see Hedley et al. 2009a). Plots show
an image transect from shallow lagoon (left) through high coral cover fore reef (*80 % cover) to
deep sand area (right). Grey regions show 90 % confidence intervals on estimations from 17-band
CASI data and QuickBird
106
J. D. Hedley