The accuracy of data captured by sensors highly impacts the performance a computer vision system. To derive accurate data, system must be capable identifying critical objects and activities in field reconfiguring configuration space real time. majority modern reconfiguration systems rely on complex computations thus consume lots resources. This may not problem for with continuous power supply, ...

Modulating retro-reflector (MRR) free-space optical (FSO) communication technology presents a bright future for realizing the small size, weight, and power (SWaP) design of one end link, facilitating further application FSO to platforms. However, limited field-of-view (FOV) MRR impedes its wide employment. In this paper, novel wide-FOV using an image space telecentric lens is proposed bidirecti...

Abstract High performance imaging in parallel cameras is a worldwide challenge computational optics studies. However, the existing solutions are suffering from fundamental contradiction between field of view (FOV), resolution and bandwidth, which system speed FOV decrease as scale increases. Inspired by compound eyes mantis shrimp zoom cameras, here we break these bottlenecks proposing deep lea...

This study aimed to evaluate the general performance of preclinical PET scanner (LabPET Solo 4, GE) at CDTN/CNEN using NEMA NU 4-2008 protocol. The parameters include: (i) spatial resolution; (ii) scatter fraction and counts rate performance; (iii) sensitivity (iv) image quality. For evaluation specific simulators a sealed radioactive source Sodium-22 were used. results revealed that NEMA-based...

OBJECTIVES The present study was conducted to examine whether the standardized uptake value (SUV) may be affected by the spatial position of a lesion in the radial direction on positron emission tomography (PET) images, obtained via two methods based on time-of-flight (TOF) reconstruction and point spread function (PSF). METHODS A cylinder phantom with the sphere (30 mm diameter), located in ...

Wide field-of-view (FOV) optics are widely used in various imaging, display, and sensing applications. Conventional wide FOV rely on complicated lens assembly comprising multiple elements to suppress coma other Seidel aberrations. The emergence of flat exemplified by metasurfaces diffractive optical (DOEs) offers a promising route expand the without escalating complexity systems. To date, desig...

Abstract The current research is focused on the identification of cargo containers in a stack from their images infrared and visible spectra, order to locate container-origin ignition within temperature control fire safety system. relevance topic reinforced by functional requirements for shipboard safety, which are embodied Chapter II-2 Safety Life at Sea (SOLAS) Convention, demanded necessity ...

Introduction: We aimed to investigate the effect of variation of beam angle and field of view (FOV) on organs’ and effective doses for patients undergoing interventional cardiology examinations by using Monte Carlo simulations and ICRP110 phantom.   Materials and Methods: Simulations were done for energies obtained from experimental measurements on the left...

Introduction: There has been a curiosity about the spheroid geometry for PET scanners developments since several years ago, therefore in this study, we are aiming to evaluate the performance of this geometry and compare its performance with cylindrical geometry using Monte Carlo simulation. Methods: We simulated a spheroid geometry with a radius of 199 mm...