نتایج جستجو برای: continuous resolution

تعداد نتایج: 535928  

Super-resolution (SR) aims to overcome the ill-posed conditions of image acquisition. SR facilitates scene recognition from low-resolution image(s). Generally assumes that high and low resolution images share similar intrinsic geometries. Various approaches have tried to aggregate the informative details of multiple low-resolution images into a high-resolution one. In this paper, we present a n...

Journal: :iranian journal of medical physics 0
hossein arabi m.sc. student, radiation medicine dept., shahid beheshti university, tehran, iran. alireza kamali asl assistant professor, nuclear engineering dept., shahid beheshti university, tehran, iran. seyed mahmood reza aghamiri associate professor, nuclear engineering dept., shahid beheshti university, tehran, iran.

introduction: variable resolution x-ray (vrx) ct is a new type of ct that can image objects at various spatial resolutions. in a vrx ct scanner, the spatial resolution increases at the cost of reduction in the field of view (fov). an important factor that limits the spatial resolution of the vrx ct is the effect of focal spot size. also, the optimum magnification is different at each incident a...

Journal: :iranian journal of radiation research 0
h. arabi radiation medicine department, shahid beheshti university, tehran, iran a.r. kamali asl radiation medicine department, shahid beheshti university, tehran, iran s.m. aghamiri radiation medicine department, shahid beheshti university, tehran, iran

background: a variable resolution x-ray (vrx) ct scanner provides a great increase in the spatial resolution. in vrx ct scanners, the spatial resolution of the system and its field of view (fov) can be changed according to the object size. one of the main factors that limit the spatial resolution of vrx ct scanner is the effect of the x-ray focal spot. materials and methods: a theoretical study...

Alireza Kamali Asl, Hossein Arabi Seyed Mahmood Reza Aghamiri

Introduction: Variable resolution x-ray (VRX) CT is a new type of CT that can image objects at various spatial resolutions. In a VRX CT scanner, the spatial resolution increases at the cost of reduction in the field of view (FOV). An important factor that limits the spatial resolution of the VRX CT is the effect of focal spot size. Also, the optimum magnification is different at each incident a...

Journal: :Magnetic resonance in medicine 2009
Yusuke Ikebata Hideo Sato-Akaba Takashi Aoyama Hirotada Fujii Kouichi Itoh Hiroshi Hirata

A method of post-processing to enhance the image resolution of the distribution of free radical molecules obtained with continuous-wave electron paramagnetic resonance (CW-EPR) imaging is reported. The low spatial resolution of EPR imaging, which has created difficulties in biomedical applications, was overcome by the method of resolution-recovery for EPR imaging. High spatial resolution images...

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