Mode Recovery by S$^2$ Imaging Without a Fourier Transform

Birefringent Fourier-transform imaging spectrometer.

Fourier-transform imaging spectrometers offer important advantages over other spectral imaging modalities, such as, a wider free spectral range, higher spectral resolutions and, in low-photon-flux conditions, higher signal-to-noise ratios can be achieved. Unfortunately, for application in harsh environments, deployment of Fourier-transform instruments based on traditional moving-mirror interfer...

Fourier Transform Based Hyperspectral Imaging

A hyperspectral imaging system (HSIS) is a combination of an imaging device and a spectrometer. The result is a 2D image combined with the third dimension containing the spectral composition of each pixel of the image. Spectrometers normally implemented in hyperspectral imaging systems are made by integrating a dispersive means (a prism or a grating) in an optical system, with the drawback of h...

Macromolecular Concentrations in Articular Cartilage by Fourier Transform Infrared Imaging

INTRODUCTION: Fourier transform infrared imaging (FTIRI) is a spectroscopic imaging tool that can be used to study the compositions and structures of biological tissues with fine spatial and spectral resolutions. Many FTIRI studies of articular cartilage use the peak intensities/areas in the infrared absorption images to represent the molecular contents, which can contain large error due to the...

Applications of Fourier Transform to Imaging Analysis

In this report, we propose a novel automatic and computationally efficient method of Fourier imaging analysis using Fourier transform. Besides Fourier transform’s many applications, one can use Fourier transform to select significant frequencies of an observed noisy signal, which can be applied as a model selection tools of (weighted) Fourier series analysis of medical images. Both simulated da...

Wide-field Fourier transform spectral imaging