Fig. 1.

LUT protocols: white arrows indicate the formation of each LUT, from Monte-Carlo simulation, to linear $R_d$ sampling, and finally function fitting. Black arrows indicate three options for data flow and usage of each LUT. First, a sample’s $R_d$ (DC and AC) is measured and used as input. (a) The linear OP LUT must search and interpolate to generate optical properties, (b) the linear $R_d$ LUT uses parametric indexing to recall optical properties, and (c) the 2-D fit LUT evaluates the function $\mathbf{F}$ to generate optical properties.