Fig. 2
From: Direct 3-D printing of complex optical phantoms using dynamic filament mixing
Titration study characterizing relationships between output optical properties and filament-mixing ratios. A color image of the 4 titration rulers (1-4, color-coded) is shown in (a). Recovered \(\mu _{a}\) and \(\mu '_{s}\) images from SFDI measurements of the 4 rulers can be seen in (b) and (c), respectively. Each ruler contains 4\(\times\) segments printed with different mixing ratios, each uniquely labeled by a segment ID (A-D); the median and standard deviation for \(\mu _{a}\) and \(\mu '_{s}\) computed across each segment’s ROI, shown in dashed squares, are summarized in (d) and (f) respectively following the ruler-segment ID notation. The fitted planes for \(\mu _{a}\) and \(\mu '_{s}\) are shown in (e) and (g), respectively, with errors to the fitted planes marked by a short vertical line.
