Optical compound microscope has been a major tool in biomedical imaging for centuries. Its
performance relies on relatively complicated, bulky and expensive lenses and alignment …

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 …

In order to realize high contrast imaging with portable devices for potential mobile
healthcare, we demonstrate a hand-held smartphone based quantitative phase microscope …

We propose a new algorithm for recovering both complex field (phase and amplitude) and
source distribution (illumination spatial coherence) from a stack of intensity images captured …

Optical phase imaging enables visualization of transparent samples, numerical refocusing,
and other computational processing. Typically phase is measured quantitatively using …

We propose a new method for phase retrieval that uses partially coherent illumination
created by any arbitrary source shape in Köhler geometry. Using a stack of defocused …

Microscopy combined with the transport of intensity equation is capable of retrieving both
intensity and phase distributions of samples from both in-focus and defocus intensities …

A finite difference method is proposed for solving the transport of intensity equation.
Simulation results show that although slower than fast Fourier transform (FFT)-based …

Recent advances in hardware technology across the active sensing spectra, from RF to
optical, enable the construction of sophisticated excitation patterns that can be varied across …

Quantitative phase imaging (QPI) provides an approach for monitoring the dry mass of
individual cells by measuring the optical pathlength of visible light as it passes through cells …