Results 11 to 20 of about 32,398 (257)

Visual-spatial processing impairment in the occipital-frontal connectivity network at early stages of Alzheimer’s disease

Frontiers in Aging Neuroscience, 2023
IntroductionAlzheimer’s disease (AD) is the leading cause of dementia worldwide, but its pathophysiological phenomena are not fully elucidated. Many neurophysiological markers have been suggested to identify early cognitive impairments of AD.
Iván Plaza-Rosales, Iván Plaza-Rosales, Enzo Brunetti, Enzo Brunetti, Enzo Brunetti, Rodrigo Montefusco-Siegmund, Samuel Madariaga, Rodrigo Hafelin, Daniela P. Ponce, Daniela P. Ponce, María Isabel Behrens, María Isabel Behrens, María Isabel Behrens, María Isabel Behrens, Pedro E. Maldonado, Pedro E. Maldonado, Andrea Paula-Lima, Andrea Paula-Lima, Andrea Paula-Lima   +18 more
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Navigation assistance in Virtual Worlds [PDF]

InSITE Conference, 2001
In this paper we report about ongoing research on navigation assistance in virtual environments. Our aim is to contribute to the development of forms of navigation assistance that enable non-professional visitors of a virtual environment to find their way without previous training.
Betsy van Dijk, Rieks op den Akker, Anton Nijholt, Job Zwiers   +3 more
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The Cross-Zone Navigation and Signage Systems for Combatting Cybersickness and Disorientation in Middle-Aged and Older People within a 3D Virtual Store

Applied Sciences, 2022
With the maturation and popularization of 3D virtual reality (3D VR) technology, various corporations have employed 3D VR animations to enrich the experience of visiting a store and change how products are presented.
Cheng-Li Liu, Shiaw-Tsyr Uang
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Navigation in REVERIE's virtual environments [PDF]

2015 IEEE Virtual Reality (VR), 2015
This work presents a novel navigation system for social collaborative virtual environments populated with multiple characters. The navigation system ensures collision free movement of avatars and agents. It supports direct user manipulation, automated path planning, positioning to get seated, and follow-me behaviour for groups.
Fiona M. Rivera, Fons Fuijk, Ebroul Izquierdo   +2 more
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Research on Accuracy of Augmented Reality Surgical Navigation System Based on Multi-View Virtual and Real Registration Technology

IEEE Access, 2020
The traditional navigation system used in spinal puncture is not able to monitor the surgical process in real time and the accuracy of navigation is unsatisfactory.
Fengfeng Zhang, Long Chen, Wenhua Miao, Lining Sun   +3 more
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The Feasibility of Using Virtual Reality and Eye Tracking in Research With Older Adults With and Without Alzheimer's Disease

Frontiers in Aging Neuroscience, 2021
Aim: To examine the feasibility of using large scale spatial, self-mobile, virtual reality, and eye tracking in older adults with and without Alzheimer's disease (AD).Methods: Older adults with early stage AD (n = 38) and a control group without AD (n ...
Rebecca Davis
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Navigating virtual agents in online virtual worlds [PDF]

Proceedings of the 13th international symposium on 3D web technology, 2008
We present an approach for navigating autonomous virtual agents in online virtual worlds that are based on a centralized server network topology. Each agent's motion is controlled through local and global navigation. Our local navigation model is based on artificial social forces that has been extended to account for inaccurate sensing from network ...
Russell Gayle, Dinesh Manocha
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A Virtual System and Method for Autonomous Navigation Performance Testing of Unmanned Surface Vehicles

Journal of Marine Science and Engineering, 2023
An overall framework of the virtual testing system has been established based on the analysis of the virtual testing requirements for autonomous navigation performance of unmanned surface vehicles (USVs).
Guoquan Xiao, Guihong Zheng, Chao Tong, Xiaobin Hong   +3 more
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Depth Map Estimation for Free-Viewpoint Television and Virtual Navigation

IEEE Access, 2020
The paper presents a new method of depth estimation, dedicated for free-viewpoint television (FTV) and virtual navigation (VN). In this method, multiple arbitrarily positioned input views are simultaneously used to produce depth maps characterized by ...
Dawid Mieloch, Olgierd Stankiewicz, Marek Domanski   +2 more
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Depth Map Refinement for Immersive Video

IEEE Access, 2021
In this article, we propose a depth map refinement method that increases the quality of immersive video. The proposal highly enhances the inter-view consistency of depth maps (estimated or acquired by any method), crucial for achieving the required ...
Dawid Mieloch, Adrian Dziembowski, Marek Domanski   +2 more
doaj   +1 more source