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Updated: May 25, 2026

Determining 3D Flow Fields via Multi-camera Light Field Imaging
Published on: March 6, 2013
Fast vectorial calculation of the volumetric focused field distribution by using a three-dimensional Fourier
J Lin1, O G Rodríguez-Herrera, F Kenny
1School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.
Abstract:
We show that the volumetric field distribution in the focal region of a high numerical aperture focusing system can be efficiently calculated with a three-dimensional Fourier transform. In addition to focusing in a single medium, the method is able to calculate the more complex case of focusing through a planar interface between two media of mismatched refractive indices. The use of the chirp z-transform in our numerical implementation of the method allows us to perform fast calculations of the three-dimensional focused field distribution with good accuracy.
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