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检索条件"主题词=Human-centered computing"

共 2478 条记录，以下是441-450 订阅

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Comparing Scatterplot Variants for Temporal Trends Visualization in Immersive Virtual Environments 30

Comparing Scatterplot Variants for Temporal Trends Visualiza...

引用

30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Quijano-Chavez, Carlos Nedel, Luciana Freitas, Carla M. D. S. Univ Fed Rio Grande do Sul Porto Alegre RS Brazil

ISBN: (纸本)9798350348156

Trends are changes in variables or attributes over time, often represented by line plots or scatterplot variants, with time being one of the axes. Interpreting tendencies and estimating trends require observing the lines or points behavior regarding increments, decrements, or both (reversals) in the value of the observed variable. Previous work assessed variants of scatterplots like Animation, Small Multiples, and Overlaid Trails for comparing the effectiveness of trends representation using large and small displays and found differences between them. In this work, we study how best to enable the analyst to explore and perform temporal trend tasks with these same techniques in immersive virtual environments. We designed and conducted a user study based on the approaches followed by previous works regarding visualization and interaction techniques, as well as tasks for comparisons in three-dimensional settings. Results show that Overlaid Trails are the fastest overall, followed by Animation and Small Multiples, while accuracy is task-dependent. We also report results from interaction measures and questionnaires.

关键词： human-centered computing Visualization Visualization design and evaluation methods human-centered computing human computer interaction (HCI) HCI design and evaluation methods User studies

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Edge-Centric Space Rescaling with Redirected Walking for Dissimilar Physical-Virtual Space Registration 22

Edge-Centric Space Rescaling with Redirected Walking for Dis...

引用

22nd IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Kim, Dooyoung Woo, Woontack KAIST UVR Lab Daejeon South Korea KAIST KI ITC ARRC Daejeon South Korea

ISBN: (纸本)9798350328387

We propose a novel space-rescaling technique for registering dissimilar physical-virtual spaces by utilizing the effects of adjusting physical space with redirected walking. Achieving a seamless and immersive Virtual Reality (VR) experience requires overcoming the spatial heterogeneities between the physical and virtual spaces and accurately aligning the VR environment with the user's tracked physical space. However, existing space-matching algorithms that rely on one-to-one scale mapping are inadequate when dealing with highly dissimilar physical and virtual spaces, and redirected walking controllers could not utilize basic geometric information from physical space in the virtual space due to coordinate distortion. To address these issues, we apply relative translation gains to partitioned space grids based on the main interactable object's edge, which enables space-adaptive modification effects of physical space without coordinate distortion. Our evaluation results demonstrate the effectiveness of our algorithm in aligning the main object's edge, surface, and wall, as well as securing the largest registered area compared to alternative methods under all conditions. These findings can be used to create an immersive play area for VR content where users can receive passive feedback from the plane and edge in their physical environment.

关键词： Virtual Reality Mixed Reality spatial matching registration optimization redirected walking human-centered computing human Computer Interaction (HCI) Interaction paradigms Virtual reality

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Meta360: Exploring User-Specific and Robust Viewport Prediction in 360-Degree Videos through Bi-Directional LSTM and Meta-Adaptation 22

Meta360: Exploring User-Specific and Robust Viewport Predict...

引用

22nd IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Li, Junjie Wang, Yumei Liu, Yu Beijing Univ Posts & Telecommun Beijing Peoples R China

ISBN: (纸本)9798350328387

Viewport prediction is a critical aspect of virtual reality (VR) video streaming, directly impacting user experience in adaptive streaming. However, most existing algorithms treat users as homogeneous entities and overlook the variations in user behaviors and video content. Additionally, they often struggle with long-term predictions and intense movement. Our research sheds light on the importance of considering user behavior variations and leveraging advanced techniques to optimize robust viewport prediction in VR video streaming. First, we address these limitations by conducting a comprehensive feature analysis on existing datasets to uncover distinctive user behaviors. Building upon these findings, we propose a novel approach that utilizes the power of Bidirectional Long Short-Term Memory (BiLSTM) networks and meta-learning. The BiLSTM architecture effectively captures long-term dependencies, which can strengthen the robustness of viewport prediction especially in long-term prediction and intense movement. Additionally, meta-learning enables personalized adaptation to individual users' viewing behaviors. Through extensive evaluations on diverse datasets, our algorithm Meta360 demonstrates superior performance in terms of accuracy and robustness compared to state-of-the-art methods.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Virtual reality computing methodologies Artificial intelligence Computer vision Computer vision problems

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VRScroll: A Shape-Changing Device for Precise Sketching in Virtual Reality

VRScroll: A Shape-Changing Device for Precise Sketching in V...

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Ying, Wen Heo, Seongkook Univ Virginia Charlottesville VA 22903 USA

ISBN: (纸本)9798350348392

Studies have shown that incorporating physical surfaces in VR can improve sketching performance by allowing users to feel the contact and rest their pens on it. However, using physical objects or devices to reproduce the diverse shapes of virtual model surfaces can be challenging. We propose VRScroll, a shape-changing device that physically renders the shape of a virtual surface for users to sketch on it using a pen. By providing users with passive haptic feedback and constrained movement, VRScroll has the potential to facilitate precise sketching on virtual surfaces.

关键词： human-centered computing human computer interaction (HCI) Interaction devices Haptic devices

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Immersive Visualization Lab at Idaho National Laboratory

Immersive Visualization Lab at Idaho National Laboratory

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Khadka, Rajiv Koudelka, John Idaho Natl Lab Ctr Adv Energy Studies Idaho Falls ID 83415 USA

This article introduces the Applied Visualization Laboratory at Idaho National Laboratory, including the tab's success and challenges as an immersive visualization laboratory. Also, it discusses the future directi... 详细信息

ISBN: (纸本)9798350348392

关键词： human-centered computing Visualization Visualization systems and tools Visualization toolkits

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Unmasking the Potential of Usable Security and Privacy Technologies in Empowering African Digital Landscapes 4

Unmasking the Potential of Usable Security and Privacy Techn...

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4th African Conference on human Computer Interaction (AfriCHI) - Beyond Limits

作者： Gamundani, Attlee M. Namibia Univ Sci & Technol Cybersecur Dept Fac Comp & Informat Windhoek Namibia

ISBN: (纸本)9798400708879

This paper comprehensively explores the intersection of human-Computer Interaction (HCI), usable security, and privacy technologies within the context of the rapidly digitising African continent. Recognising the increasing digitalisation in Africa, we assert the criticality of focusing on usable security and privacy features to ensure safe and meaningful user engagement. We systematically review existing literature, present five illustrative case studies across different sectors, including finance, health, education, agriculture, and internet services, and highlight their application within Africa's unique socio-cultural and economic realities. Our findings underscore the transformative potential of these technologies in enhancing user experiences, securing data, providing context-specific solutions, considering socio-cultural factors, and fostering accessibility and inclusivity. This paper argues for the vital role of user-friendly, context-specific, and culturally aware technology design in over-coming the digital divide, enhancing the adoption and trust of digital systems, and fostering an inclusive, secure digital ecosystem in Africa.

关键词： human-centered computing Security and Privacy computing Education Applied computing

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A Visual Analytics Inspired Approach to Correlate and Understand Multiple Mechanical Tensor Fields 16

A Visual Analytics Inspired Approach to Correlate and Unders...

引用

IEEE 16th Pacific Visualization Symposium (IEEE PacificVis)

作者： Kretzschmar, Vanessa Scheuermann, Gerik Stommel, Markus Gillmann, Christina Univ Leipzig Leipzig Germany Leibniz Inst Polymer Res Dresden Dresden Germany

ISBN: (纸本)9798350321241

We develop an interactive approach for analyzing multi-field tensor data from simulations in close collaboration with domain scientists. Our approach is based on extensive application analysis and built around a multi-field clustering addressing multiple user-defined quantities which were required by the domain scientists. Established techniques like linked views complement the approach to support reasoning while offering an overview and detailed insight into the multi-field tensor data. Further, we include an evaluation containing a real-world use case and a user study with domain scientists to demonstrate the usefulness compared to existing tools.

关键词： human-centered computing Visualization Visualization application domains Scientific visualization

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A Case Study on Providing Immersive Visualization for Neuronal Network Data Using COTS Soft- and Hardware

A Case Study on Providing Immersive Visualization for Neuron...

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Krueger, Marcel Li, Qin Kuhlen, Torsten W. Gerrits, Tim Rhein Westfal TH Aachen Aachen Germany

ISBN: (纸本)9798350348392

COTS VR hardware and modern game engines create the impression that bringing even complex data into VR has become easy. In this work, we investigate to what extent game engines can support the development of immersive visualization software with a case study. We discuss how the engine can support the development and where it falls short, e.g., failing to provide acceptable rendering performance for medium and large -sized data sets without using more sophisticated features.

关键词： human -centered computing Visualization Visualization techniques human-centered computing Virtual reality

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The Belated Guest: Exploring the Design Space for Transforming Asynchronous Social Interactions in Virtual Reality

The Belated Guest: Exploring the Design Space for Transformi...

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Wang, Portia Miller, Mark R. Bailenson, Jeremy N. Stanford Univ Dept Management Sci & Engn Stanford CA 94305 USA Stanford Univ Dept Comp Sci Stanford CA 94305 USA Stanford Univ Dept Commun Stanford CA 94305 USA

ISBN: (纸本)9798350348392

Social meetings in Virtual Reality (VR) are fundamentally different from videoconferencing because the VR tracking data can be used to render scenes as if they were in real-time, enabling people to go back in time and experience discussions that they may have not attended. Moreover, the tracking data allows people to visit the meeting from any location in the room, as opposed to the single camera angle used for video conferences. The current paper describes the methodology of transforming tracking data around proxemics and head orientations of recorded avatars to nonverbally assimilate new users into a recorded scene.

关键词： human-centered computing human-centered computing (HCI) Interaction paradigms Virtualreality

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DC: Research on Augmented Reality

DC: Research on Augmented Reality

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Yu, Piaopiao Nanjing Univ Nanjing Peoples R China

ISBN: (纸本)9798350348392

Augmented reality technology can integrate virtual information (objects, pictures, videos, sounds, etc.) into the real environment, enrich the real world, and build a more comprehensive and better world. Outdoor illumination is essential for AR applications. We will discuss our proposed two methods which predict outdoor illumination front a single outdoor image. With predicted illumination, the virtual object can he inserted into the real environment, with consistent shadow information and occlusion relationship.

关键词： computing methodologies computing methodologies Computer vision human-centered computing Visualization Visualization application domains

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