Introduction to Fourier ptychographic imaging for 3D ToF cameras

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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