Introduction to Fourier ptychographic imaging for 3D ToF cameras

Lietz, Henrik; Eberhardt, Jörg

Fourier ptychographic imaging (FPI) extends Fourier domain synthetically by capturing several frequency domain shifted images. In addition to spatial resolution enhancement, FPI allows recovery of a complex light field’s phase information. Classical FPI approaches are based on a sequence of two-dimensional intensity images. In this article, we introduce FPI for 3D Time-of-Flight (ToF) cameras to increase its lateral resolving power. We discuss what needs to be considered for an experimental setup and why we recommend an aperture-scanning setup with reflection mode illumination. Simulations illustrate the potential of increasing resolution of PMD camera’s low-resolution (LR) amplitude images via FPI.

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