Results 21 to 30 of about 1,653,628 (289)

Improving Chest Monitoring through Magnetic Resonance Angiogram Image Contrast Enhancement

open access: yesLife, 2023
Magnetic resonance angiography is a medical procedure used to offer an image of the blood vessels and organs of the body. Given the worldwide spread of cardiovascular diseases, more and more resources are invested in treating them. One of the most modern
Beatrice Arvinti, Alexandru Isar
doaj   +1 more source

Provenance analysis for instagram photos [PDF]

open access: yes, 2019
As a feasible device fingerprint, sensor pattern noise (SPN) has been proven to be effective in the provenance analysis of digital images. However, with the rise of social media, millions of images are being uploaded to and shared through social media ...
CT Li   +12 more
core   +1 more source

Geometric Coplanar Constraints-Aided Autonomous Celestial Navigation for Spacecraft in Deep Space Exploration

open access: yesIEEE Access, 2019
Autonomous celestial navigation has been exploited for orbit determination of deep space exploration. Geometric constraints in celestial measurement are the inherent attributes in actual comprehensive autonomous celestial navigation physical systems ...
Xin Ma, Xiaolin Ning, Xiao Chen, Jin Liu
doaj   +1 more source

Alias-free, real coefficient m-band QMF banks for arbitrary m [PDF]

open access: yes, 1987
Based on a generalized framework for alias free QMF banks, a theory is developed for the design of uniform QMF banks with real-coefficient analysis filters, such that aliasing can be completely canceled by appropriate choice of real-coefficient synthesis
Swaminathan, Kumar, Vaidyanathan, P. P.
core   +1 more source

New ELIN Systems Using CMOS Transistors in Weak Inversion Operation

open access: yesAdvances in Electrical and Computer Engineering, 2013
In this paper new ELIN systems implemented by using CMOS transistors in weak inversion operation are presented. The proposed systems exploit the exponential-law characteristics of the subthreshold CMOS transistors.
BOZOMITU, R. G., CEHAN, V.
doaj   +1 more source

Micro-fabricated electromagnetic filters for millikelvin experiments [PDF]

open access: yes, 2006
In this article we report on the design, fabrication and tests of micro-fabricated broadband filters suitable for proper electromagnetic thermalization of electrical lines connected to sensitive quantum electronics experiments performed at dilution ...
Joyez, P., Sueur, H. Le
core   +4 more sources

Locus filters

open access: yesOptics Express, 2022
In this paper, directly following from Gage [J. Opt. Soc. Am.23,46(1993)10.1364/JOSA.23.000046], we study the design of a particular theoretical filter for photography, that we call the locus filter. It is built in such a way that a Wien-Planckian light (of any temperature) is spectrally mapped to another Wien-Planckian light.
Rada Deeb, Graham Finlayson
openaire   +4 more sources

Fuzzy rule based multiwavelet ECG signal denoising [PDF]

open access: yes, 2008
Since different multiwavelets, pre- and post-filters have different impulse responses and frequency responses, different multiwavelets, pre- and post-filters should be selected and applied at different noise levels for signal denoising if signals are ...
Chan, Yick-Po   +5 more
core   +1 more source

Appropriateness of Numbers of Receptive Fields in Convolutional Neural Networks Based on Classifying CIFAR-10 and EEACL26 Datasets

open access: yesElectrical, Control and Communication Engineering, 2018
The topical question studied in this paper is how many receptive fields (filters) a convolutional layer of a convolutional neural network should have. The goal is to find a rule for choosing the most appropriate numbers of filters. The benchmark datasets
Romanuke Vadim
doaj   +1 more source

Use of Filters to Smooth Out Signals Collected through Mobile Devices in the Static and Dynamic Balance Assessment: A Systematic Review

open access: yesApplied Sciences, 2022
Background: When performing motion analysis using sensors, the signal often comes with noise and it is necessary to use filters to exclude unwanted frequencies.
Karina Sá   +6 more
doaj   +1 more source

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