Results 1 to 10 of about 637,512 (158)

Indoor Positioning System Using Magnetic Field Map Navigation and an Encoder System [PDF]

open access: yesSensors, 2017
In the indoor environment, variation of the magnetic field is caused by building structures, and magnetic field map navigation is based on this feature. In order to estimate position using this navigation, a three-axis magnetic field must be measured at ...
Han-Sol Kim, Woojin Seo, Kwang-Ryul Baek
doaj   +4 more sources

Visual field map clusters in human frontoparietal cortex [PDF]

open access: yeseLife, 2017
The visual neurosciences have made enormous progress in recent decades, in part because of the ability to drive visual areas by their sensory inputs, allowing researchers to define visual areas reliably across individuals and across species.
Wayne E Mackey   +2 more
doaj   +2 more sources

Regularized Field Map Estimation in MRI [PDF]

open access: yesIEEE Transactions on Medical Imaging, 2008
In fast magnetic resonance (MR) imaging with long readout times, such as echo-planar imaging (EPI) and spiral scans, it is important to correct for the effects of field inhomogeneity to reduce image distortion and blurring. Such corrections require an accurate field map, a map of the off-resonance frequency at each voxel.
Jeffrey Fessler   +2 more
exaly   +4 more sources

Compression and noise reduction of field maps [PDF]

open access: yesPhysical Review Accelerators and Beams, 2018
Errors from discretization and large data volume of field maps is a concern for beam dynamics simulations with respect to achievable accuracy and to the required amount of time.
X. Du, L. Groening
doaj   +3 more sources

Artificial Potential Field with Discrete Map Transformation for Feasible Indoor Path Planning

open access: yesApplied Sciences, 2020
This work considers the path planning problem of personal mobility vehicle (PMV) for indoor navigation using the Artificial Potential Field (APF) method.
Muhammad Zulfaqar Azmi, Toshio Ito
doaj   +3 more sources

Effects of Field-Map Distortion Correction on Resting State Functional Connectivity MRI. [PDF]

open access: yesFront Neurosci, 2017
Togo H   +6 more
europepmc   +2 more sources

Cortical field maps across human sensory cortex

open access: yesFrontiers in Computational Neuroscience, 2023
Cortical processing pathways for sensory information in the mammalian brain tend to be organized into topographical representations that encode various fundamental sensory dimensions.
Alyssa A. Brewer, Brian Barton
doaj   +1 more source

Early evaluation of adjuvant effects on topramezone efficacy under different temperature conditions using chlorophyll fluorescence tests

open access: yesFrontiers in Plant Science, 2022
Proper selection of adjuvant applications is an important strategy to enhance herbicide efficacy and reduce active ingredient input especially under adverse environmental conditions.
Jinwei Zhang   +5 more
doaj   +1 more source

Noise-Resilient Depth Estimation for Light Field Images Using Focal Stack and FFT Analysis

open access: yesSensors, 2022
Depth estimation for light field images is essential for applications such as light field image compression, reconstructing perspective views and 3D reconstruction.
Rishabh Sharma, Stuart Perry, Eva Cheng
doaj   +1 more source

Using synthetic MR images for distortion correction

open access: yesDevelopmental Cognitive Neuroscience, 2023
Functional MRI (fMRI) data acquired using echo-planar imaging (EPI) are highly distorted by magnetic field inhomogeneities. Distortion and differences in image contrast between EPI and T1-weighted and T2-weighted (T1w/T2w) images makes their alignment a ...
David F. Montez   +21 more
doaj   +1 more source

Home - About - Disclaimer - Privacy