Articles with "modulation transfer" as a keyword



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Investigation of modulation transfer function in InGaAs photodetector small pitch array based on three-dimensional numerical analysis

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Published in 2020 at "Optical and Quantum Electronics"

DOI: 10.1007/s11082-020-02293-w

Abstract: Three-dimensional numerical simulation technology was used to investigate the influence of structural and material parameters on the modulation transfer function (MTF) of lattice matched InGaAs/InP planar small pitch arrays. We found that extending depletion zone… read more here.

Keywords: three dimensional; pitch; array; dimensional numerical ... See more keywords
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Intraocular lens power adjustment by a femtosecond laser: In vitro evaluation of power change, modulation transfer function, light transmission, and light scattering in a blue light-filtering lens.

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Published in 2018 at "Journal of cataract and refractive surgery"

DOI: 10.1016/j.jcrs.2017.09.036

Abstract: PURPOSE To evaluate intraocular lens (IOL) power, modulation transfer function (MTF), light transmission, and light scattering of a blue light-filtering IOL before and after power adjustment by a femtosecond laser obtained through increased hydrophilicity of… read more here.

Keywords: laser; change; modulation transfer; power ... See more keywords
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Modulation transfer function of the imaging probe using an 8.8 mm-long and 125 µm-thick graded- index short multimode fiber

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Published in 2017 at "Optics Communications"

DOI: 10.1016/j.optcom.2016.10.007

Abstract: Abstract We measured the modulation transfer function (MTF) of a short multimode fiber (SMMF) probe and proposed the optical model including the thin random phase screen (TRPS) to explain degradations of imaging characteristics. SMMF is… read more here.

Keywords: multimode fiber; modulation transfer; transfer function; short multimode ... See more keywords
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Characterisation of the Medipix3 detector for 60 and 80keV electrons.

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Published in 2017 at "Ultramicroscopy"

DOI: 10.1016/j.ultramic.2017.06.010

Abstract: In this paper we report quantitative measurements of the imaging performance for the current generation of hybrid pixel detector, Medipix3, used as a direct electron detector. We have measured the modulation transfer function and detective… read more here.

Keywords: function detective; modulation transfer; detector; transfer function ... See more keywords
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Three‐dimensional transfer function of optical microscopes in reflection mode

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Published in 2021 at "Journal of Microscopy"

DOI: 10.1111/jmi.13040

Abstract: Three‐dimensional (3D) transfer functions build the basis for a comprehensive characterization of optical imaging systems in the spatial frequency domain. Utilizing the projection‐slice theorem, the 2D modulation transfer function of an incoherent imaging system can… read more here.

Keywords: three dimensional; modulation transfer; transfer function; dimensional transfer ... See more keywords
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Modulation transfer function measurements of HgCdTe long wavelength infrared arrays for the Near-Earth Object Surveyor

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Published in 2022 at "Journal of Astronomical Telescopes, Instruments, and Systems"

DOI: 10.1117/1.jatis.8.1.016002

Abstract: Abstract. The modulation transfer function (MTF) is a useful measure in image quality analysis and performance budget determination. Sensitive long wavelength infrared (LWIR) detectors for astronomical space telescopes require slight modifications to the existing MTF… read more here.

Keywords: wavelength infrared; transfer function; earth object; long wavelength ... See more keywords
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Effect of beam quality and readout direction in the edge profile on the modulation transfer function of photostimulable phosphor systems via the edge method

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Published in 2021 at "Journal of Medical Imaging"

DOI: 10.1117/1.jmi.8.4.043501

Abstract: Abstract. Purpose: The objective of this study was to investigate the effects of (i) the difference in the beam qualities on the presampled modulation transfer function (MTF) using the edge method and (ii) the readout… read more here.

Keywords: direction; readout direction; beam; edge ... See more keywords
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Effects of aerosol modulation transfer function on target identification

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Published in 2020 at "Optical Engineering"

DOI: 10.1117/1.oe.59.7.073103

Abstract: Abstract. Atmospheric aerosol effects are often overlooked in target acquisition studies. Typically, performance models only consider extinction and turbulence within the prediction processes. The aerosol modulation transfer function (MTF) is included in range acquisition algorithms… read more here.

Keywords: function; target; target identification; modulation transfer ... See more keywords
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Using sub-resolution features for self-compensation of the modulation transfer function in remote sensing.

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Published in 2017 at "Optics express"

DOI: 10.1364/oe.25.004018

Abstract: Space smart optical orbiting payloads integrated with attitude and position (SSPIAP) are emerging as an essential tool that is extensively used in microsatellites. The on-orbit imaging link of SSPIAPs includes atmospheric disturbances, defocusing, and relative… read more here.

Keywords: resolution; mtf; modulation transfer; transfer function ... See more keywords
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Optimization strategies for modulation transfer spectroscopy applied to laser stabilization.

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Published in 2018 at "Optics express"

DOI: 10.1364/oe.26.024010

Abstract: We present a general analysis for determining the optimal modulation parameters for the modulation transfer spectroscopy scheme. The results are universally valid and can be applied to spectroscopy of any atomic species requiring only the… read more here.

Keywords: modulation; laser stabilization; transfer spectroscopy; modulation transfer ... See more keywords
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Modulation transfer functions for audiovisual speech

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Published in 2022 at "PLoS Computational Biology"

DOI: 10.1371/journal.pcbi.1010273

Abstract: Temporal synchrony between facial motion and acoustic modulations is a hallmark feature of audiovisual speech. The moving face and mouth during natural speech is known to be correlated with low-frequency acoustic envelope fluctuations (below 10… read more here.

Keywords: audiovisual speech; speech; modulation transfer; motion ... See more keywords