Results 11 to 20 of about 4,631,130 (249)

Defect Detection Algorithm for Wing Skin with Stiffener Based on Phased-Array Ultrasonic Imaging

open access: yesSensors, 2023
In response to the real-time imaging detection requirements of structural defects in the R region of rib-stiffened wing skin, a defect detection algorithm based on phased-array ultrasonic imaging for wing skin with stiffener is proposed.
Chuangui Wu   +5 more
doaj   +2 more sources

Spaceborne SAR Imaging Algorithm for Coherence Optimized. [PDF]

open access: yesPLoS ONE, 2016
This paper proposes SAR imaging algorithm with largest coherence based on the existing SAR imaging algorithm. The basic idea of SAR imaging algorithm in imaging processing is that output signal can have maximum signal-to-noise ratio (SNR) by using the ...
Zhiwei Qiu   +3 more
doaj   +2 more sources

Migration through Resolution Cell Correction and Sparse Aperture ISAR Imaging for Maneuvering Target Based on Whale Optimization Algorithm—Fast Iterative Shrinkage Thresholding Algorithm

open access: yesSensors
Targets faced by inverse synthetic aperture radar (ISAR) are often non-cooperative, with target maneuvering being the main manifestation of this non-cooperation.
Xinrong Guo, Fengkai Liu, Darong Huang
doaj   +2 more sources

A Millimeter-Wave 3D Imaging Algorithm for MIMO Synthetic Aperture Radar. [PDF]

open access: yesSensors (Basel), 2023
Multiple-input-multiple-output synthetic aperture radar (MIMO-SAR) is being studied and applied in more and more scenarios. However, there is still a certain distance away from real-time imaging using advanced algorithms.
Lin B, Li C, Ji Y, Liu X, Fang G.
europepmc   +2 more sources

Validation of OSEM algorithm for attenuation correction in cardiac SPECT studies [PDF]

open access: yes, 2005
Photon attenuation is believed to be one of the major causes of artefacts in cardiac SPECT studies and therefore should be corrected to improve the specificity of cardiac SPECT imaging for the detection of coronary artery disease.
Alenezi, Ahmed M
core   +5 more sources

Depth mapping of integral images through viewpoint image extraction with a hybrid disparity analysis algorithm [PDF]

open access: yes, 2008
Integral imaging is a technique capable of displaying 3–D images with continuous parallax in full natural color. It is one of the most promising methods for producing smooth 3–D images.
McCormick, M, Kung, SY, Wu, C, Aggoun, A
core   +1 more source

An Improved Equivalent Squint Range Model and Imaging Approach for Sliding Spotlight SAR Based on Highly Elliptical Orbit

open access: yesRemote Sensing, 2021
As an emerging orbital system with flexibility and brand application prospects, the highly elliptical orbit synthetic aperture radar (HEO SAR) can achieve both a low orbit detailed survey and continuous earth surface observation in high orbit, which ...
Xinchang Hu   +3 more
doaj   +1 more source

Frequency-division-multiplexing technique for imaging metrology [PDF]

open access: yes, 2014
An algorithm to multiplex multiple image captures simultaneously onto a single image sensor at full frame resolution was developed for imaging metrology. Parseval’s theorem was used to obtain the image intensity from image time-series of around typically
Bledowski, Ian A.
core   +4 more sources

Development and Validation of an Ultrasound Imaging Algorithm for Structured Reporting in Testicular Pathology. [PDF]

open access: yesDiagnostics (Basel)
Background/Objectives: Testicular ultrasound (US) imaging is a critical modality for diagnosing a variety of testicular pathologies, including malignancies.
Pintican R   +7 more
europepmc   +2 more sources

Hybrid diffractive optics (DOE & refractive lens) for broadband EDoF imaging

open access: yes, 2023
In the considered hybrid diffractive imaging system, a refractive lens is arranged simultaneously with a multilevel phase mask (MPM) as a diffractive optical element (DOE) for Achromatic Extended-depth-of-field (EDoF) imaging. This paper proposes a fully
Mirirostami, Seyyedreza   +9 more
core   +1 more source

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