Results 61 to 70 of about 602,338 (125)

DOES: A Deep Learning-Based Approach to Estimate Roll and Pitch at Sea

open access: yesIEEE Access, 2022
The use of Attitude and Heading Reference Systems (AHRS) for orientation estimation is now common practice in a wide range of applications, e.g., robotics and human motion tracking, aerial vehicles and aerospace, gaming and virtual reality, indoor ...
Fabiana Di Ciaccio   +2 more
doaj   +1 more source

Diffeomorphic Metric Mapping and Probabilistic Atlas Generation of Hybrid Diffusion Imaging based on BFOR Signal Basis [PDF]

open access: yes, 2013
We propose a large deformation diffeomorphic metric mapping algorithm to align multiple b-value diffusion weighted imaging (mDWI) data, specifically acquired via hybrid diffusion imaging (HYDI), denoted as LDDMM-HYDI. We then propose a Bayesian model for
Alexander, Andrew L.   +6 more
core   +1 more source

Federal Civil Appellate Jurisdiction: An Interlocutory Restatement [PDF]

open access: yes, 1984
In this paper, optimization approaches for object/background segmentation and object dimension/orientation estimation are studied. The data sets are collected with a laser radar or are simulated laser radar data.
Grönwall, Christina   +1 more
core   +1 more source

ESTIMATION OF FIBRE ORIENTATION FROM DIGITAL IMAGES

open access: yesImage Analysis & Stereology, 2011
In this paper, estimation of fibre orientation is studied for fibre systems observable as a blurred greyscale image. The estimation method is based on scaled variograms observed along a set of sampling lines in different directions. The parameters of the orientation distribution are obtained numerically. Simulated data are used to study the statistical
Kärkkäinen, Salme   +1 more
openaire   +4 more sources

Improved structure-adaptive anisotropic filter based on a nonlinear structure tensor

open access: yesCybernetics and Information Technologies, 2014
A variety of structure-adaptive filters are proposed to overcome the blurred effects of image structures caused by the classical Gaussian weighted mean filter.
Wu Jie, Feng Zuren, Ren Zhigang
doaj   +1 more source

Fiber Orientation Estimation Guided by a Deep Network

open access: yes, 2017
Diffusion magnetic resonance imaging (dMRI) is currently the only tool for noninvasively imaging the brain's white matter tracts. The fiber orientation (FO) is a key feature computed from dMRI for fiber tract reconstruction.
A Daducci   +10 more
core   +1 more source

Density Weighted Connectivity of Grass Pixels in Image Frames for Biomass Estimation

open access: yes, 2018
Accurate estimation of the biomass of roadside grasses plays a significant role in applications such as fire-prone region identification. Current solutions heavily depend on field surveys, remote sensing measurements and image processing using reference ...
Chowdhury, Sujan   +3 more
core   +1 more source

Efficient 2D-3D Matching for Multi-Camera Visual Localization

open access: yes, 2019
Visual localization, i.e., determining the position and orientation of a vehicle with respect to a map, is a key problem in autonomous driving. We present a multicamera visual inertial localization algorithm for large scale environments.
Cui, Zhaopeng   +4 more
core   +1 more source

Time and Frequency Domain Analysis of IMU-Based Orientation Estimation Algorithms with Comparison to Robotic Arm Orientation as Reference

open access: yesSensors
This work focuses on time and frequency domain analyses of IMU-based orientation estimation algorithms, including indirect Kalman (IKF), Madgwick (MF), and complementary (CF) filters.
Ruslan Sultan, Steffen Greiser
doaj   +1 more source

Distributed current estimates using cortical orientation constraints [PDF]

open access: yesHuman Brain Mapping, 2005
AbstractDistributed source models of magnetoencephalographic (MEG) and electroencephalographic (EEG) data employ dense distributions of current sources in a volume or on a surface. Previously, anatomical magnetic resonance imaging (MRI) data have been used to constrain locations and orientations based on cortical geometry extracted from anatomical MRI ...
Fa-Hsuan, Lin   +3 more
openaire   +2 more sources

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