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- W2084618831 abstract "Imaging system performance can be described in the spatial domain, where the optical blur diameter is compared to the detector size, or in the frequency domain [modular transfer function (MTF) approach], where the optics cutoff is compared to the detector cutoff. Both comparisons provide a metric that is a function of F/d, where F is the focal ratio, is the wavelength, and d is the detector size. F/d is applied to three models: Schade's equivalent resolution (visible systems), Snyder's MTFA (MTF area; visible systems), and target acquisition (NVThermIP—an infrared system model). All models produced curves that exhibit a transition in the region 0.41<F/d<1.0, representing a change from detector-limited to optics-limited performance. NVThermIP's contrast equations are simplified to easily calculate resolution and acquisition range. Trade-off analyses include range versus detector size, versus focal ratio, and versus field of view (FOV). When F/d>2, no aliasing occurs. This may be important for medical imaging, where sampling artifacts may be interpreted as a medical abnormality, or for space probes, where it is impossible to obtain ground truth." @default.
- W2084618831 created "2016-06-24" @default.
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- W2084618831 date "2007-10-01" @default.
- W2084618831 modified "2023-10-18" @default.
- W2084618831 title "Imaging system performance based upon <inline-formula><math altimg=none display=inline overflow=scroll><mrow><mi>F</mi><mi>λ</mi><mo>∕</mo><mi>d</mi></mrow></math></inline-formula>" @default.
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- W2084618831 doi "https://doi.org/10.1117/1.2790066" @default.
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