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检索条件"主题词=Human-centered computing"

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Paths Through Spatial Networks

Paths Through Spatial Networks

引用

IEEE Visualization Conference (VIS)

作者： Godwin, Alex Amer Univ Washington DC 20016 USA

ISBN: (数字)9781665488129

ISBN: (纸本)9781665488129

Spatial networks present unique challenges to understanding topological structure. Each node occupies a location in physical space (e.g., longitude and latitude) and each link may either indicate a fixed and well-described path (e.g., along streets) or a logical connection only. Placing these elements in a map maintains these physical relationships while making it more difficult to identify topological features of interest such as clusters, cliques, and paths. While some systems provide coordinated representations of a spatial network, it is almost universally assumed that the network itself is the sole mechanism for movement across space. In this paper, I present a novel approach for exploring spatial networks by orienting them along a point or path in physical space that provides the guide for parameters in a force-directed layout. By specifying a path across topography, networks can be spatially filtered independently of the topology of the network. Initial case studies indicate promising results for exploring spatial networks in transportation and energy distribution.

关键词： human-centered computing Visualization Visualization techniques Graph Drawing human-centered computing Visualization Visualization application domains Geographic visualization

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Irish Sign Language in a Virtual Reality Environment

Irish Sign Language in a Virtual Reality Environment

引用

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

作者： McCloskey, Ryan Walton Inst Informat & Commun Syst Sci Carriganore Ireland

ISBN: (纸本)9781665484022

This paper describes a study whereby groups of users are tasked with learning Irish Sign Language (ISL) gestures in distinct environments and performing a comparison of outcomes to determine the general effectiveness of each method. One groups of users are tasked with learning via traditional tuition methods, and the second groups is placed in a virtual reality environment with a custom training module for teaching ISL gestures. This paper discusses such a study and details the processes, motivations and potential future work.

关键词： human-centered computing Accessibility Accessibility systems and tools human-centered computing human computer interaction Interaction paradigms Virtual reality human-centered computing human computer interaction Interaction paradigms Collaborative interaction Applied computing Arts and humanities Language translation

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human Vision vs. Computer Vision: A Readability Study in a Virtual Reality Environment

Human Vision vs. Computer Vision: A Readability Study in a V...

引用

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

作者： Qing, Zhu Edara, Praveen Univ Missouri Columbia MO 65211 USA

ISBN: (纸本)9781665484022

Text plays an important role in conveying information to users in a virtual reality (VR) environment. Both VR software and hardware are evolving rapidly to improve text display quality. However, evaluation of text readability still relies on human participants. In this study, cloud computer vision was used to evaluate text readability in VR. human subjects were recruited to test the same text scenarios. The cloud computer vision-based approach produced results that were consistent with human vision-based recognition. The use of computer vision to automate text readability evaluation could significantly reduce the overall effort and time in developing readable text in VR.

关键词： Text readability Evaluation methods Computer vision Transportation Road sign readability User study human factors human-centered computing Visualization Visualization design and evaluation methods Applied computing Operations research Transportation

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Evaluating Situated Visualization in AR with Eye Tracking 9

Evaluating Situated Visualization in AR with Eye Tracking

引用

9th IEEE Evaluation and Beyond - Methodological Approaches for Visualization (BELIV)

作者： Kurzhals, Kuno Becher, Michael Pathmanathan, Nelusa Reina, Guido Univ Stuttgart Stuttgart Germany

ISBN: (数字)9798350396294

ISBN: (纸本)9798350396294

Augmented reality (AR) technology provides means for embedding visualization in a real-world context. Such techniques allow situated analyses of live data in their spatial domain. However, as existing techniques have to be adapted for this context and new approaches will be developed, the evaluation thereof poses new challenges for researchers. Apart from established performance measures, eye tracking has proven to be a valuable means to assess visualizations qualitatively and quantitatively. We discuss the challenges and opportunities of eye tracking for the evaluation of situated visualizations. We envision that an extension of gaze-based evaluation methodology into this field will provide new insights on how people perceive and interact with visualizations in augmented reality.

关键词： human-centered computing Visualization Visualization design and evaluation methods

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TranSlider: User-Controlled Augmented Content Presence Visualization in AR Collaboration 21

TranSlider: User-Controlled Augmented Content Presence Visua...

引用

21st IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Yoon, Boram Kim, Seonji Woo, Woontack KAIST UVR Lab Daejeon South Korea KAIST KI ITC ARRC Daejeon South Korea

ISBN: (数字)9781665453653

ISBN: (纸本)9781665453653

We present a user interface method called TranSlider, designed for an AR collaboration with the concept of customized visualization of the user-selected augmented content. In AR, virtual content is augmented on top of the real world, so collaborating users are inevitably exposed to the diverse-overlapped information layers. Because the human recognition system has limited capacity, this overloaded information may burden the user to understand fully, and it is also challenging to manipulate among occluded objects. To solve this issue, we designed the TranSlider that allows users to control the presence of augmented content being transparent or highlighted based on the user interaction. The implemented prototype includes UI components, a manipulation function, and a network-connected collaboration module, and its applicability was verified through a preliminary interview. We expect that it would effectively support general AR collaborations and those with specific purposes, such as designing complex, hierarchical, or made up of many partial assets.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Collaborative interaction

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Exploring Three-Dimensional Locomotion Techniques in Virtual Reality 21

Exploring Three-Dimensional Locomotion Techniques in Virtual...

引用

21st IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Lim, Donghae Shirai, Shizuka Orlosky, Jason Ratsamee, Photchara Uranishi, Yuki Takemura, Haruo Osaka Univ Suita Osaka Japan Augusta Univ Augusta GA USA Osaka Inst Technol Osaka Japan

ISBN: (数字)9781665453653

ISBN: (纸本)9781665453653

Most existing Virtual Reality (VR) locomotion interfaces are designed for ground-based locomotion, limiting the degrees of freedom (DoF) during movement as they would in the real world. However, an optimized three-dimensional travel technique is required for certain virtual scenes such as flying and diving. This study evaluated three different interface types: Slider, Teleport, and Point-Tug, that were created based on existing ground-based locomotion methods in order to investigate the features required for three-dimensional (3D) movement. We conducted a within-subjects study with 3D navigation tasks and evaluated the performance when navigating a virtual environment using three different 3D locomotion interfaces. The results show that Slider, which allows users to move continuously, has an advantage over the others, and interfaces such as teleportation, which are widely used in ground-based locomotion, are likely to be perceived differently in 3D locomotion.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Virtual reality

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Let Every Seat Be Perfect! A Case Study on Combining BIM and VR for Room Planning

Let Every Seat Be Perfect! A Case Study on Combining BIM and...

引用

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

作者： Tong, Wai Li, Haotian Wei, Huan Xie, Liwenhan Lin, Yanna Qu, Huamin Hong Kong Univ Sci & Technol Hong Kong Peoples R China

ISBN: (纸本)9781665484022

When communicating indoor room design, professional designers normally rely on software like Revit to export walk-through videos for their clients. However, a lack of in-situ experience restricts the ultimate users from evaluating the design and hence provides limited feedback, which may lead to a rework after actual construction. In this case study, we explore empowering end-users by exposing rich design details through a Virtual Reality (VR) application based on building an information model. Qualitative feedback in our user study shows promising results. We further discuss the benefits of the approach and opportunities for future research.

关键词： human-centered computing Interaction paradigms Virtual Reality

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COCTEAU: an Empathy-Based Tool for Decision-Making 22

COCTEAU: an Empathy-Based Tool for Decision-Making

引用

31st ACM Web Conference (WWW)

作者： Mauri, Andrea Tocchetti, Andrea Corti, Lorenzo Hsu, Yen-Chia Verma, Himanshu Brambilla, Marco Delft Univ Technol Delft Netherlands Politecn Milan Milan Italy

ISBN: (纸本)9781450391306

Traditional approaches to data-informed policymaking are often tailored to specific contexts and lack strong citizen involvement and collaboration, which are required to design sustainable policies. We argue the importance of empathy-based methods in the policymaking domain given the successes in diverse settings, such as healthcare and education. In this paper, we introduce COCTEAU (Co-Creating The European Union), a novel framework built on the combination of empathy and gamification to create a tool aimed at strengthening interactions between citizens and policy-makers. We describe our design process and our concrete implementation, which has already undergone preliminary assessments with different stakeholders. Moreover, we briefly report pilot results from the assessment. Finally, we describe the structure and goals of our demonstration regarding the newfound formats and organizational aspects of academic conferences.

关键词： Crowdsourcing empathy gamification human-centered computing decision-making

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PanoSynthVR: Toward Light-weight 360-Degree View Synthesis from a Single Panoramic Input 21

PanoSynthVR: Toward Light-weight 360-Degree View Synthesis f...

引用

21st IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Waidhofer, John Gadgil, Richa Dickson, Anthony Zollmann, Stefanie Ventura, Jonathan Calif Polytech State Univ San Luis Obispo San Luis Obispo CA 93407 USA Carnegie Mellon Univ Pittsburgh PA 15213 USA Univ Otago Dunedin New Zealand

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

We investigate how real-time, 360 degrees view synthesis can be achieved on current virtual reality hardware from a single panoramic image input. We introduce a light-weight method to automatically convert a single panoramic input into a multi-cylinder image representation that supports real-time, free-viewpoint view synthesis rendering for virtual reality. We apply an existing convolutional neural network trained on pinhole images to a cylindrical panorama with wrap padding to ensure agreement between the left and right edges. The network outputs a stack of semi-transparent panoramas at varying depths which can be easily rendered and composited with over blending. Quantitative experiments and a user study show that the method produces convincing parallax and fewer artifacts than a textured mesh representation.

关键词： computing methodologies Artificial intelligence Computer vision human-centered computing human computer interaction (HCI) computing methodologies Computer graphics Graphics systems and interfaces Virtual reality

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Perceptibility of Jitter in Augmented Reality Head-Mounted Displays 21

Perceptibility of Jitter in Augmented Reality Head-Mounted D...

引用

21st IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Wilmott, James P. Erkelens, Ian M. Murdison, T. Scott Rio, Kevin W. Meta Menlo Pk CA 94025 USA

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

When using a see-through augmented reality head-mounted display system (AR HMD), a user's perception of virtual content may be degraded by a variety of perceptual artifacts resulting from the architecture of rendering and display pipelines. In particular, virtual content that is rendered to appear stationary in the real world (world-locked) can be susceptible to spatial and temporal 3D position errors. A subset of these errors, termed jitter, result from mismatches between the spatial localization, rendering, and display pipelines, and can manifest as perceived motion of intended-to-be stationary content. Here, we employ psychophysical methods to quantify the perceptibility of jitter artifacts in an AR HMD. For some viewing conditions, participants perceived jitter that was smaller than the pixel pitch of the testbed (i.e., subpixel jitter). In general, we found that jitter perceptibility increased as viewing distance increased and decreased as background luminance increased. We did not find that the contrast ratio of virtual content, age, or experience with AR/VR modulated jitter perceptibility. Taken together, this study quantifies the degree of jitter that a user can perceive in an AR HMD and demonstrates that it is critical to consider the capabilities and limits of the human visual system when designing the next generation of spatial computing platforms.

关键词： human-centered computing human-computer interaction (HCI) HCI design and evaluation methods Laboratory experiments human-centered computing human-computer interaction (HCI) Interaction paradigms Mixed / augmented reality

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