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Table 3 Vegetation indices used in this study

From: Biomass estimation of cultivated red algae Pyropia using unmanned aerial platform based multispectral imaging

Vegetation Index Formula Reference
RVI \(\rho_{NIR} /\rho_{R}\) [27]
DVI \(\rho_{NIR}\)-\(\rho_{R}\) [50]
NDRE \(\left( {\rho_{NIR} - \rho_{RE} } \right)/\left( {\rho_{NIR} + \rho_{RE} } \right)\) [15]
NDVI \(\left( {\rho_{NIR} - \rho_{R} } \right)/\left( {\rho_{NIR} + \rho_{R} } \right)\) [22]