Bi-directional reflectance of corals

An assessment of the bi-directional reflectance distribution function (BRDF ) of corals with different morphologies was undertaken using hyperspectral reflectance measurements. The highest variance in reflectance obtained at d ifferent viewing angles was found for the open branching Acropora colony, p ossibly attributed to branch orientation and internal shadow distribution. Spectral separation within and between features at the nominated sensor-vie wing angles was greatest in the near infrared portion of the spectrum. The analysis of coral reef bi-directional reflectance properties and degree of internal shadowing holds potential for future assessment and information ex traction relating to coral structural characteristics.