Figure 10.

Images of the channel using reduced aperture data. Reconstructions by SAFT using (a) 25% reduced aperture, (c) 14.06% reduced aperture, and (e) 6.25% reduced aperture. Reconstructions by the SDUI method using (b) 25% reduced aperture with ${\lambda }_1=900$, ${\lambda }_2=20$, (d) 14.06% reduced aperture with ${\lambda }_1=900$, ${\lambda }_2=15$, and (f) 6.25% reduced aperture with ${\lambda }_1=500$, ${\lambda }_2=15$. All dimensions are in millimeters.