부산대학교 도서관

Hence, through selective spectrum filtering, as illustrated in Figure 1c, FP can digitally mimic various modes of contrast enhancement, ranging from direct phase information to differential phase contrast or arbitrarily selectable darkfield arrangements, all from the same acquired FP dataset and without any additional hardware. While both scanning microscopy and FP unlock the ability to obtain an extended DoF through time-sequential image capture, no moving parts are necessary in FP. In the first of this three-article series [[1]], we introduced an example "computational imaging" technique termed Fourier ptychography (FP), which uses this co-design strategy to overcome a variety of limitations faced by standard microscopes. Combined with digital correction of microscope imperfections (for example, optical aberrations), FP provides unprecedented imaging quality and digitally tunable illumination contrast mechanisms across extremely wide image areas. [Extracted from the article]