Radiation dose is a concern in X-ray tomographic imaging; coded aperture compressive X-ray tomosynthesis is an approach used to reduce radiation. It places a coded aperture in front of an X-ray source in order to obtain 2D patterned projections of a three-dimensional object ont...
Autor(es): Henry Arguello. Angela P. Cuadros. Christopher Peitsch. Gonzalo R. Arce.
Compressive spectral imaging (CSI) captures multispectral imagery using fewer measurements than those required by traditional Shannon?Nyquist theory-based sensing procedures. CSI systems acquire coded and dispersed random projections of the scene rather than direct measurements o...
Autor(es): Hoover Fabian Rueda. Henry Arguello. Gonzalo R. Arce.
Traditional spectral imaging approaches require sensing all the voxels of a scene. Colored mosaic FPA detector-based architectures can acquire sets of the scene?s spectral components, but the number of spectral planes depends directly on the number of available filters used on th...
Autor(es): Henry Arguello. Claudia V. Correa. Gonzalo R. Arce.
Imaging spectroscopy involves the sensing of a large amount of spatial information across a multitude of wavelengths. Conventional approaches to hyperspectral sensing scan adjacent zones of the underlying spectral scene and merge the results to construct a spectral data cube....
Autor(es): Henry Arguello. Lawrence Carin. David S. Kittle. Gonzalo R. Arce. David J. Brady.
The coded aperture snapshot spectral imager (CASSI) senses the spatial and spectral information of a scene using a set of K random projections of the scene onto focal plane array measurements. The reconstruction of the underlying three-dimensional (3D) scene is then obtained by l...
Autor(es): Henry Arguello. Claudia Victoria Correa.
Coded aperture snapshot spectral imaging (CASSI) provides a mechanism for capturing a 3D spectral cube with a single shot 2D measurement. In many applications selective spectral imaging is sought since relevant information often lies within a subset of spectral bands. Capturing...
Autor(es): Henry Arguello. Gonzalo R. Arce.