Fig. 4
Simulative determination of the absorption coefficient from a composited illumination of multi-frequency modulation patterns at frequencies of 0.07, 0.13, 0.19, and 0.25 mm−1. Sample set 1–9 specify the samples with μ a  = 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, and 0.09 mm−1, respectively