Figure 6
Lens-free imaging of a Papanicolaou (Pap) smear using wavelength-scanning pixel super resolution and multi-height phase retrieval. (a) Super-resolved lens-free phase image of the Pap smear. Wavelength-scanning range: 510–531 nm, scanning step: 3 nm. (b, e) Regions of interest (ROI) No. 1 and 2, respectively. (c, f) Digital phase contrast images generated from lens-free reconstructions (refer to the Materials and Methods section for details). (d, g) Conventional lens-based phase contrast images obtained using a 40 × objective lens (NA=0.6).
