Results 21 to 30 of about 126,369 (255)

A network community structure similarity index for weighted networks

open access: yesPLOS ONE, 2023
Identification of communities in complex systems is an essential part of network analysis. Accordingly, measuring similarities between communities is a fundamental part of analysing community structure in different, yet related, networks. Commonly used methods for quantifying network community similarity fail to consider the effects of edge weights ...
Milad Malekzadeh, Jed A. Long
openaire   +3 more sources

A Structural Comparison between the Origin-Destination Matrices Based on Local Windows with Socioeconomic, Land-Use, and Population Characteristics

open access: yesJournal of Advanced Transportation, 2021
The origin-destination (OD) matrices express the number and the pattern of trips distributed between OD pairs. OD matrix structural comparison can be used to identify different mobility patterns in the cities.
Shahriar Afandizadeh Zargari   +2 more
doaj   +1 more source

Optimizing Generative Adversarial Network (GAN) Models for Non-Pneumatic Tire Design

open access: yesApplied Sciences, 2023
Pneumatic tires are used in diverse industries. However, their design is difficult, as it relies on the knowledge of experienced designers. In this paper, we generate images of non-pneumatic tire designs with patterns based on shapes and lines for ...
Ju Yong Seong   +4 more
doaj   +1 more source

Using carpet plots to analyze blood transit times in the brain during hypercapnic challenge magnetic resonance imaging

open access: yesFrontiers in Physiology, 2023
Blood arrival time and blood transit time are useful metrics in characterizing hemodynamic behaviors in the brain. Functional magnetic resonance imaging in combination with a hypercapnic challenge has been proposed as a non-invasive imaging tool to ...
Bradley Fitzgerald   +7 more
doaj   +1 more source

DSSIM: a structural similarity index for floating-point data

open access: yesCoRR, 2022
Data visualization is a critical component in terms of interacting with floating-point output data from large model simulation codes. Indeed, postprocessing analysis workflows on simulation data often generate a large number of images from the raw data, many of which are then compared to each other or to specified reference images.
Allison H. Baker   +2 more
openaire   +2 more sources

Performance of active contour models in train rolling stock part segmentation on high-speed video data

open access: yesCogent Engineering, 2017
Rolling stock examination is performed to identify the defects during train movements at speeds
Ch. Raghava Prasad, P.V.V. Kishore
doaj   +1 more source

Content-Aware Retargeted Image Quality Assessment

open access: yesInformation, 2019
In targeting the low correlation between existing image scaling quality assessment methods and subjective awareness, a content-aware retargeted image quality assessment algorithm is proposed, which is based on the structural similarity index.
Tingting Zhang   +3 more
doaj   +1 more source

Deep Learning with Adaptive Attention for Seismic Velocity Inversion

open access: yesRemote Sensing, 2022
The subsurface velocity model is crucial for high-resolution seismic imaging. Although full-waveform inversion (FWI) is a high-accuracy velocity inversion method, it inevitably suffers from challenging problems, including human interference, strong ...
Fangda Li   +5 more
doaj   +1 more source

Optimal Design of Multichannel Equalizers for the Structural Similarity Index

open access: yesIEEE Transactions on Image Processing, 2014
The optimization of multichannel equalizers is studied for the structural similarity (SSIM) criteria. The closed-form formula is provided for the optimal equalizer when the mean of the source is zero. The formula shows that the equalizer with maximal SSIM index is equal to the one with minimal mean square error (MSE) multiplied by a positive real ...
Li Chai 0001, Yuxia Sheng
openaire   +2 more sources

nOMP: A New Sparse Solution to Enhance the SSIM Levels of OMP-Based Encoded Images

open access: yesIEEE Access, 2022
This work comprises the development of a quality enhancement technique for image encoders that use compressive sensing. The recommended solution seeks to maximize the perceptual quality based objective function, unlike other sparse representation ...
A. N. Omara   +2 more
doaj   +1 more source

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