Rene A. Claus

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We propose an alternative method for solving the Transport of Intensity equation (TIE) from a stack of through-focus intensity images taken by a microscope or lensless imager. Our method enables quantitative phase and amplitude imaging with improved accuracy and reduced data capture, while also being computationally efficient and robust to noise. We use(More)
We demonstrate a Kalman filtering method to recover the phase of a thin object illuminated by partially coherent light. Our method is fast, efficient, robust to noise, and able to handle arbitrary source shapes when used in a microscope with Köhler illumination. Quantitative phase imaging has become an important tool in biology and surface metrology [1,2],(More)
Gaussian process (GP) regression is a nonparametric regression method that can be used to predict continuous quantities. Here, we show that the same technique can be applied to a class of phase imaging techniques based on measurements of intensity at multiple propagation distances, i.e. the transport of intensity equation (TIE). In this paper, we(More)
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