Results 21 to 30 of about 3,417,405 (292)
Releasing aperture filter constraints [PDF]
, 2007 Aperture filters are a recently introduced class of nonlinear filters used in image processing. In this paper we present a new approach for aperture filter design, improving operator performance with respect to the MSE measure by releasing some of the ...
Marshall, S.
core +4 more sources
Advances in Mechanical Engineering, 2023 Multi-aperture electrical connectors are widely used in the aerospace system to provide high-reliability and high-quality connections. The existing reliability assessment methods only focus on the single-aperture electrical connectors, and ignored the ...
Ping Qian +4 more
doaj +1 more source
Multi-aperture interferometry at Concordia [PDF]
Proceedings of the International Astronomical Union, 2006 The next generation (post-VLTI) of multi-telescope interferometric arrays operated in optical/infrared wavelengths should be kilometric, from 1 to 10 km. The Concordia station offers a unique opportunity to set such an interferometer in the best atmospheric conditions presently known on Earth.
Fossat, E. +11 more
openaire +3 more sources
Remote Sensing, 2022 The spaceborne P-band fully polarimetric synthetic aperture radar (SAR) working system is highly susceptible to the scintillation effects induced by ionospheric irregularities due to its low carrier frequency.
Feixiang Tang +4 more
doaj +1 more source
Comparison Between Single-Aperture and Multi-Aperture Approaches to Computer Correction of Images [PDF]
EPJ Web of Conferences, 2020 The effectiveness of the reconstruction of images formed by single- and multi-aperture systems and distorted by an atmospheric turbulence is analyzed in this work.
Dudorov Vadim, Eremina Anna
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Photonics, 2023 The large-aperture space camera needs gravity unloading in the ground imaging quality test. The multi-point gravity balance method is mainly applied to the object with symmetrical structure and regular mass distribution, such as the primary mirror of the
Lihao Zhang +3 more
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Micromachines, 2022 As a widely clinical detection method, ultrasonography (US) has been applied to the diagnosis of breast cancer. In this paper, the multi-element synthetic aperture focusing (M-SAF) is applied to the ring array of breast ultrasonography (US) imaging ...
Yang Wu +8 more
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Calculation of Temperature Rise in Multi-layer Biological Tissue Based on Large Aperture Concave Sphere Focused Ultrasonic Transducer [PDF]
Iranian Journal of Medical Physics, 2023 Introduction: The large aperture concave spherical focused ultrasonic transducer has stronger acoustic focusing effect and can obtain good temperature rise effect. The purpose of this study was to explore the effect of different frequency, duty cycle and
HU DONG +3 more
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Smart Multi-Aperture Radar Techniques for Spaceborne Remote Sensing [PDF]
, 2008 Data compression is crucial for modern synthetic aperture radar systems where high resolution or large coverage may result in huge amounts of raw data.
Bordoni, Federica +7 more
core +1 more source
Ultrasonic Synthetic Apertures: Review
Archives of Acoustics, 2014 In the paper the concept of synthetic aperture used for high resolution/high frame rate ultrasonic imaging is reviewed. The synthetic aperture technique allows building extended “virtual” apertures, synthesized from smaller real aperture resulting in ...
Andrzej NOWICKI, Barbara GAMBIN
doaj +1 more source