Point spread function shaping using geometric analysis
نویسندگان
چکیده
منابع مشابه
Accelerated Point Spread Function Mapping Using Compressed Sensing for EPI Geometric Distortion Correction
Introduction: Single-shot echo-planar imaging (EPI) is a fast technique allowing the acquisition of an image following a single RF excitation. The high temporal resolution of EPI makes it the method of choice for applications such as fMRI or diffusion tensor imaging. However, EPI is prone to geometric and intensity distortions in the presence of magnetic field inhomogeneities. Several correctio...
متن کاملEnhancement of Point Spread Function of Planar Fluorescent Imaging System Using Iterative Deconvolution Method
This article has no abstract.
متن کاملSpectral shaping to improve the point spread function in optical coherence tomography.
We demonstrate inhibition of the sidelobes of the axial point spread function in optical coherence tomography by shaping the power spectrum of the light source with a remaining power of 4.54 mW. A broadband amplified spontaneous emission source radiating at 1565 +/- 40 nm is employed in a free-space optical coherence tomography system. The axial point spread functions before and after optical s...
متن کاملImage Resolution Enhancement Using Spatially Invariant Point Spread Function
This paper presents an image resolution enhancement algorithm using spatially invariant point spread function. Point spread function is used to constrain the solution space. This parameter is computed at each iteration step using partially restored image at each iteration, and High pass filter is used to impose the degree of edge smoothness on the solution. The resulting iterative algorithm exh...
متن کاملX-ray beam-shaping via deformable mirrors: surface profile and point spread function computation for Gaussian beams using physical optics
X-ray mirrors with high focusing performances are commonly used in different sectors of science, such as X-ray astronomy, medical imaging and synchrotron/free-electron laser beamlines. While deformations of the mirror profile may cause degradation of the focus sharpness, a deliberate deformation of the mirror can be made to endow the focus with a desired size and distribution, via piezo actuato...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Communications
سال: 2018
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2018.06.068