Capturing 3D Fluid Surfaces

Researchers at the University of Delaware are:

"...proposing a novel approach for accurately reconstructing three-dimensional fluid surfaces through the design of an experimental system using a light field camera array that can simultaneously capture different views of a fluid surface.
      The light field camera array features a number of digital cameras, from 16 to 128, with specially modified flashes, lenses and apertures. Instead of one flash, each camera is equipped with four.
      ...the system works by placing a known pattern beneath the surface, with each camera in the array observing a distinct time-varying distortion pattern. A sampled fluid surface can then be measured by analyzing the distortions. For surface reconstruction, the researchers plan to develop an algorithm to minimize the error relative to the sampled data."

This should be an interesting project to follow. The previous work that I have seen with multi-flash cameras captured static scenes, so I am curious how Jingyi Yu will modify the system to handle dynamic fluid.