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Fast Fourier transformation of a spatial impulse response of an electro-optical imaging system provides the optical transfer function or the modulation transfer function (MTF) of the system in the spatial frequency domain. The MTFs of the sub-systems in the spatial frequency domain could be multiplied to get the overall MTF of an imaging system. This is much more convenient than the repeated convolutions...
Modulation transfer function (MTF) is the ability of an imaging system to faithfully image a given object. The MTF of an imaging system quantifies the ability of the system to resolve or transfer spatial frequencies [1]. Consider a bar pattern with a cross-section of each bar being a sine wave. Since the image of a sine wave light distribution is always a sine wave, the image is always a sine wave...
A time-domain numerical method to achieve reconstruction of conductor cylinders was considered in this paper. And the obstacle is characterized by the discrete points. The electric field and magnetic field on the extrapolated boundary are solved by Time-Domain Finite Element Method (TD-FEM), and than the far-field value is obtained from it. Genetic Algorithm (GA) and real differential evolution strategy...
This work proposes a novel method for quantitative imaging of radioactivity on microfluidic chips by using visible light emission from Čerenkov radiation. Čerenkov radiation is generated when charged particles travel through an optically transparent material with a velocity greater than that of light in that material. It has been observed at UCLA that microfluidic chips used for 18F-related radio-synthesis...
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