Numerical wave propagation in ImageJ

Abstract

An ImageJ plugin for numerical wave propagation is presented. The plugin provides ImageJ, the well-known software for image processing, with the capability of computing numerical wave propagation by the use of angular spectrum, Fresnel, and Fresnel-Bluestein algorithms. The plugin enables numerical wave propagation within the robust environment provided by the complete set of built-in tools for image processing available in ImageJ. The plugin can be used for teaching and research purposes. We illustrate its use to numerically recreate Poisson's spot and Babinet's principle, and in the numerical reconstruction of digitally recorded holograms from millimeter-sized and pure phase microscopic objects.

Multiwavelength Digital Holographic Imaging and Phase Unwrapping of Protozoa Using Custom Fiji Plug-ins

“…This paper reports new plug-ins for reconstruction, phase unwrapping, and registration (multi-image landmark correspondences) (a tutorial is provided in the on-line documentation). The reconstruction plugin is based on Opto-Digital's Numerical Propagation plugin [24] using JTransforms. The user does not need to install the Numerical Propagation plugin manually to run our plugin, as ours downloads all necessary dependencies.…”

“…The real and imaginary inputs were then calculated according to Equation (4). Each of these types of objects was propagated using the Angular Spectrum method as described elsewhere [24]. The depth to which each color was propagated varied to represent chromatic aberration, using differences in focal planes similar to those observed experimentally on our system.…”

Off-axis digital holography with multiplexed volume Bragg gratings

“…Holograms were reconstructed by Fresnel transformation [56][57][58][59][60][61][62][63]; in practice, we used the software Holovibes [64] for real-time hologram rendering, which performed image rendering of complex-valued holograms H(x, y, t) from the stream of rescaled interferograms I(x, y, t)…”

High speed optical holography of retinal blood flow

“…The image rendering of off-axis, complex-valued holograms H(x, y, t) was performed by discrete Fresnel transformation [25] of recorded interferograms I(x, y, t)…”