Results 31 to 40 of about 10,451,306 (281)

Sensor Fusion with Asynchronous Decentralized Processing for 3D Target Tracking with a Wireless Camera Network

open access: yesSensors, 2023
We present a method to acquire 3D position measurements for decentralized target tracking with an asynchronous camera network. Cameras with known poses have fields of view with overlapping projections on the ground and 3D volumes above a reference ground
Thiago Marchi Di Gennaro   +1 more
doaj   +1 more source

Moving Frames of Reference, Relativity and Invariance in Transfer Entropy and Information Dynamics

open access: yesEntropy, 2013
We present a new interpretation of a local framework for informationdynamics, including the transfer entropy, by defining a moving frame of reference for theobserver of dynamics in lattice systems. This formulation is inspired by the idea ofinvestigating
Joseph T. Lizier, John R. Mahoney
doaj   +1 more source

Advanced Planar Projection Contour (PPC): A Novel Algorithm for Local Feature Description in Point Clouds

open access: yesJournal of Imaging
Local feature description of point clouds is essential in 3D computer vision. However, many local feature descriptors for point clouds struggle with inadequate robustness, excessive dimensionality, and poor computational efficiency.
Wenbin Tang   +4 more
doaj   +1 more source

An Appearance-Based Method for Parametric Video Registration

open access: yesELCVIA Electronic Letters on Computer Vision and Image Analysis, 2003
In this paper we address the problem of multi frame video registration using the combination of an appearance-based technique and a parametric model of the transformations.
Xavier Orriols   +2 more
doaj   +1 more source

A Ridgeline-Based Terrain Co-registration for Satellite LiDAR Point Clouds in Rough Areas

open access: yesRemote Sensing, 2020
It is still a completely new and challenging task to register extensive, enormous and sparse satellite light detection and ranging (LiDAR) point clouds.
Ruqin Zhou, Wanshou Jiang
doaj   +1 more source

Relativistic Reference Frames of Local Observer and Space Radiointerferometer [PDF]

open access: yesSymposium - International Astronomical Union, 1990
In a considerable number of works on relativistic astrometry (see,e.g.Kovalevsky and Brumberg 1986) the reference frames (RFs) are introduced either by means of coordinate representation of a space-time metric, such as using harmonicity conditions (Brumberg and Kopejkin 1989), or on the basis of invariant constructions like Fermi coordinates (Synge ...
A.N. Alexandrov   +2 more
openaire   +1 more source

Tożsamość w czasach zmiany

open access: yesPoliteja, 2015
Social identity in times of change. Local Poland in the process of European integration The article concerns the problem of dynamics of collective identities in local Poland after the accession to the European Union in 2004.
Paweł Kubicki
doaj   +1 more source

Sphero-Conical Modeling for the Estimation of Very Long Baseline Interferometry Invariant Point

open access: yesSensors, 2022
A geodetic reference frame is a fundamental element in geoinformation fields such as autonomous navigation and digital twins. The international terrestrial reference frame is established and maintained using several space-geodetic techniques, including ...
Tae-Suk Bae, Chang-Ki Hong
doaj   +1 more source

Four-state reference-frame-independent quantum key distribution with non-qubit sources

open access: yes, 2021
The discrepancy between theory and experiment severely limits the development of quantum key distribution (QKD). Reference-frame-independent (RFI) protocol has been proposed to avoid alignment of the reference frame.
Yuqing Huang (153028)   +8 more
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

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