Plenoptic imaging systems are often used for applications like refocusing, multimodal imaging, and multiview imaging. However, their resolution is limited to the number of lenslets. In this paper we investigate paraxial, incoherent, plenoptic image formation, and develop a method to recover some of the resolution for the case of a two-dimensional (2D) in-focus object. This enables the recovery ...

Super-resolution reconstruction algorithms perform a fusion of several low quality images of the same scene into a single improved quality image. As opposed to this STATIC recovery problem, in this paper we deene a DYNAMIC super-resolution task: the restoration of a blurred, decimated, and noisy image sequence. We rst model this problem through state-space equations, showing that this problem c...

objective(s): the aim of this study was to determine the optimal reconstruction parameters for iterative reconstruction in different devices and collimators for dopamine transporter (dat) single-photon emission computed tomography (spect). the results were compared between filtered back projection (fbp) and different attenuation correction (ac) methods.methods: an anthropomorphic striatal phant...

Abstract When observing targets in the near-Earth space environment using ground-based telescopes, Earth’s turbulent atmosphere and telescope’s aperture combine to act as a low-resolution spectrometer. The light at disparate wavelengths from given point object lands different spatial locations focal plane. Here we investigate feasibility of capitalizing on this effect provide snapshot hyper-spe...

The sparse recovery space–time adaptive processing (SR-STAP) can reduce the requirements of clutter samples and suppress effectively using limited training for airborne radar. Commonly, whole angle-Doppler plane is uniformly discretized into small grid points in SR-STAP methods. However, patches deviate from pre-discretized a non-sidelooking off-grid effect degrades performance significantly. I...

We consider the mobile service scenario where video programming is broadcast to low-resolution wireless terminals. In such a scenario, broadcasters utilize simultaneous data services and bi-directional communications capabilities of the terminals in order to offer substantially enriched viewing experiences to users by allowing user participation and user tuned content. While users immediately b...