Results 21 to 30 of about 38,801 (275)

Millimeter-Wave InSAR Image Reconstruction Approach by Total Variation Regularized Matrix Completion

open access: yesRemote Sensing, 2018
Millimeter-wave interferometric synthetic aperture radiometer (InSAR) can provide high-resolution observations for many applications by using small antennas to achieve very large synthetic aperture.
Yilong Zhang   +4 more
doaj   +1 more source

Undersampled Windowed Exponentials and Their Applications [PDF]

open access: yesActa Applicandae Mathematicae, 2018
Referees comment incorporated, To appear in Acta.
Chun-Kit Lai, Sui Tang
openaire   +3 more sources

SNR Degradation in Undersampled Phase Measurement Systems

open access: yesSensors, 2016
A wide range of measuring applications rely on phase estimation on sinusoidal signals. These systems, where the estimation is mainly implemented in the digital domain, can generally benefit from the use of undersampling to reduce the digitizer and ...
David Salido-Monzú   +3 more
doaj   +1 more source

k-Covariance: An Approach of Ensemble Covariance Estimation and Undersampling to Stabilize the Covariance Matrix in the Global Minimum Variance Portfolio

open access: yesApplied Sciences, 2022
A covariance matrix is an important parameter in many computational applications, such as quantitative trading. Recently, a global minimum variance portfolio received great attention due to its performance after the 2007–2008 financial crisis, and this ...
Tuan Tran, Nhat Nguyen, Trung Nguyen
doaj   +1 more source

Quantifying galaxy shapes: Sersiclets and beyond [PDF]

open access: yes, 2011
Parametrising galaxy morphologies is a challenging task, e.g., in shear measurements of weak lensing or investigations of galaxy evolution. The huge variety of morphologies requires an approach that is highly flexible, e.g., accounting for azimuthal ...
Abraham   +38 more
core   +1 more source

Real-time terahertz imaging with a single-pixel detector [PDF]

open access: yes, 2020
Terahertz (THz) radiation is poised to have an essential role in many imaging applications, from industrial inspections to medical diagnosis. However, commercialization is prevented by impractical and expensive THz instrumentation.
Blu, Thierry   +3 more
core   +1 more source

Evaluating Descriptive Metrics of the Human Cone Mosaic [PDF]

open access: yes, 2016
Purpose: To evaluate how metrics used to describe the cone mosaic change in response to simulated photoreceptor undersampling (i.e., cell loss or misidentification).
Carroll, Joseph   +3 more
core   +2 more sources

Accelerating MRI With Longitudinally-Informed Latent Posterior Sampling. [PDF]

open access: yesMagn Reson Med
ABSTRACT Purpose To accelerate MRI acquisition by incorporating the previous scans of a subject during reconstruction. Although longitudinal imaging constitutes much of clinical MRI, leveraging previous scans is challenging due to the complex relationship between scan sessions, potentially involving substantial anatomical or pathological changes, and ...
Urman Y   +4 more
europepmc   +2 more sources

Evaluating Landslide Susceptibility Using Sampling Methodology and Multiple Machine Learning Models

open access: yesISPRS International Journal of Geo-Information, 2023
Landslide susceptibility assessment (LSA) based on machine learning methods has been widely used in landslide geological hazard management and research.
Yingze Song   +7 more
doaj   +1 more source

Selecting the Suitable Resampling Strategy for Imbalanced Data Classification Regarding Dataset Properties. An Approach Based on Association Models

open access: yesApplied Sciences, 2021
In many application domains such as medicine, information retrieval, cybersecurity, social media, etc., datasets used for inducing classification models often have an unequal distribution of the instances of each class.
Mohamed S. Kraiem   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy