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检索条件"主题词=Human-centered computing"

共 2507 条记录，以下是2371-2380 订阅

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Context-Responsive Labeling in Augmented Reality 14

Context-Responsive Labeling in Augmented Reality

引用

14th IEEE Pacific Visualization Symposium (IEEE PacificVis)

作者： Koeppel, Thomas Groeller, M. Eduard Wu, Hsiang-Yun TU Wien Vienna Austria VRVis Res Ctr Vienna Austria

ISBN: (纸本)9781665439312

Route planning and navigation are common tasks that often require additional information on points of interest. Augmented Reality (AR) enables mobile users to utilize text labels, in order to provide a composite view associated with additional information in a real-world environment. Nonetheless, displaying all labels for points of interest on a mobile device will lead to unwanted overlaps between information, and thus a context-responsive strategy to properly arrange labels is expected. The technique should remove overlaps, show the right level-of-detail, and maintain label coherence. This is necessary as the viewing angle in an AR system may change rapidly due to users' behaviors. Coherence plays an essential role in retaining user experience and knowledge, as well as avoiding motion sickness. In this paper, we develop an approach that systematically manages label visibility and levels-of-detail, as well as eliminates unexpected incoherent movement. We introduce three label management strategies, including (I) occlusion management, (2) level-of-detail management, and (3) coherence management by balancing the usage of the mobile phone screen. A greedy approach is developed for fast occlusion handling in AR. A level-of-detail scheme is adopted to arrange various types of labels. A 3D scene manipulation is then built to simultaneously suppress the incoherent behaviors induced by viewing angle changes. Finally, we present the feasibility and applicability of our approach through one synthetic and two real-world scenarios, followed by a qualitative user study.

关键词： human-centered computing Visualization

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Cybersickness Analysis with EEG Using Deep Learning Algorithms 26

Cybersickness Analysis with EEG Using Deep Learning Algorith...

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26th IEEE Conference on Virtual Reality and 3D User Interfaces (VR)

作者： Jeong, Daekyo Yoo, Sangbong Yun, Jang Sejeong Univ Seoul South Korea

ISBN: (纸本)9781728113777

Cybersickness is a symptom of dizziness that occurs while experiencing Virtual Reality (VR) technology and it is presumed to occur mainly by crosstalk between the sensory and cognitive systems. However, since the sensory and cognitive systems cannot be measured objectively, it is difficult to measure cybersickness. Therefore, methodologies for measuring cybersickness have been studied in various ways. Traditional studies have collected answers to questionnaires or analyzed EEG data using machine learning algorithms. However, the system relying on the questionnaires lacks objectivity, and it is difficult to obtain highly accurate measurements with the machine learning algorithms in previous studies. In this work, we apply and compare Deep Neural Network (DNN) and Convolutional Neural Network (CNN) deep learning algorithms for objective cybersickness measurement from EEG data. We also propose a data preprocessing for learning and signal quality weights allowing us to achieve high performance while learning EEG data with the deep learning algorithms. Besides, we analyze video characteristics where cybersickness occurs by examining the 360 video stream segments causing cybersickness in the experiments. Finally, we draw common patterns that cause cybersickness.

关键词： human-centered computing Virtual reality computing methodologies Machine learning approaches

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AR/VR Based Smart Policing For Fast Response to Crimes in Safe City 18

AR/VR Based Smart Policing For Fast Response to Crimes in Sa...

引用

International Normal Labour and Birth Research Conference

作者： Bang, Junseong Lee, Youngho Lee, Yong-Tae Park, Wonjoo ETRI Publ Safety Intelligence Res Sect Daejeon South Korea Mokpo Natl Univ UVR Lab Mokpo South Korea ETRI Def & Safety ICT Res Dept Daejeon South Korea

ISBN: (纸本)9781728147659

With advances in information and communication technologies, cities are getting smarter to enhance the quality of human life. In smart cities, safety (including security) is an essential issue. In this paper, by reviewing several safe city projects, smart city facilities for the safety are presented. With considering the facilities, a design for a crime intelligence system is introduced. Then, concentrating on how to support police activities (i.e., emergency call reporting reception, patrol activity, investigation activity, and arrest activity) with immersive technologies in order to reduce a crime rate and to quickly respond to emergencies in the safe city, smart policing with augmented reality (AR) and virtual reality (VR) is explained.

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

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Evaluating IVR in Primary School Classrooms 18

Evaluating IVR in Primary School Classrooms

引用

International Normal Labour and Birth Research Conference

作者： Chua, Yvonne Sridhar, Priyashri Kamlesh Zhang, Haimo Dissanayake, Vipula Nanayakkara, Suranga Univ Auckland Auckland Bioengn Inst Augmented Human Lab Auckland New Zealand

ISBN: (纸本)9781728147659

In recent years, the availability of affordable mobile Virtual Reality (VR) viewers has resulted in strong interests to incorporate Immersive Virtual Reality (IVR) within classrooms. However, studies on the effect of IVR on primary schoolers' learning are few, and they have often used equipment and settings far removed from everyday classroom instruction. We explored the role of interactivity and immersion in learning in a primary school classroom with 36 children aged 11-13 years, using commercially available devices that are ready-to-scale. We co-created content with different levels of immersion and interactivity together with teachers and investigated student engagement and learning. We present and discuss the use of multiple data sources (performance, physiological responses, observations and self-report) in a real-world classroom evaluation.

关键词： human-centered computing Interaction paradigms Virtual reality human-centered computing human computer interaction Empirical studies in HCI

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VR and Empathy: The Bad, the Good, and the Paradoxical

VR and Empathy: The Bad, the Good, and the Paradoxical

引用

IEEE Workshop on Augmented and Virtual Realities for Good (VAR4Good)

作者： Moroz, Matthew Krol, Kat Univ Nevada Reno NV 89557 USA Univ Cambridge Cambridge England

ISBN: (纸本)9781538659779

Virtual reality (VR) is cited as offering the ultimate empathy machine [31]. This theory makes sense intuitively since VR enables a user to step in to another's shoes and experience the world as they do. We define this specific class of mental state as 'emotional empathy' [49]. The ability of VR to evoke emotional empathy is widely lauded as a good thing [18, 35, 43]. In this paper we invite labels such as 'Luddites' and 'technophobes' as we question the soundness of such claims. We instead offer warnings regarding employing VR is this manner and urge caution. Rather than dismiss the usefulness of VR in this realm we offer alternative implementation techniques in order to evoke more positive results in users. VR offers much utility for psychologists, psychiatrists, and neuroscientists due to the ability it affords to alter cognition. While promoting the medium in general, we offer warnings regarding potential short and long term neurological impacts. We encourage increased research focus on the underlying neural mechanisms that underpin VR's successful multisensory hijack.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Virtual reality Applied computing Law, social and behavioral sciences Psychology

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Estimating the Just Noticeable Difference of Tactile Feedback in Oculus Quest 2 Controllers 21

Estimating the Just Noticeable Difference of Tactile Feedbac...

引用

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

作者： Cui, Dixuan Mousas, Christos Purdue Univ Dept Comp Graph Technol W Lafayette IN 47907 USA

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

In virtual reality (VR) applications, humans experience the provided content not only through the visual and auditory systems but also through the somatosensory system. Thus, we decided to conduct a VR study to further explore the just noticeable difference (JND) of tactile feedback to understand humans' perceptions of tactile stimuli. Our VR study examined the JND in terms of the intensity, duration, and frequency of tactile feedback provided through commercially available vibrotactile motion controllers, the Oculus Quest 2 controllers. We instructed participants to report whether they perceived a difference between a reference (variation) and a testing stimulus at each point in the experiment for a different property (intensity, duration, and frequency) of tactile feedback. We report both positive and negative JND values for the three properties of tactile feedback. We discuss our findings and limitations and provide directions for future studies regarding tactile perception for commercially available tactile feedback devices.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Virtual reality Hardware Communication hardware interfaces and storage Tactile and hand-based interfaces Haptic devices

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Stable Visual Summaries for Trajectory Collections 14

Stable Visual Summaries for Trajectory Collections

引用

14th IEEE Pacific Visualization Symposium (IEEE PacificVis)

作者： Wulms, Jules Buchmueller, Juri Meulemans, Wouter Verbeek, Kevin Speckmann, Bettina TU Wien Vienna Austria Univ Konstanz Constance Germany TU Eindhoven Eindhoven Netherlands

ISBN: (纸本)9781665439312

The availability of devices that track moving objects has led to an explosive growth in trajectory data. When exploring the resulting large trajectory collections, visual summaries are a useful tool to identify time intervals of interest. A typical approach is to represent the spatial positions of the tracked objects at each time step via a one-dimensional ordering;visualizations of such orderings can then be placed in temporal order along a time line. There are two main criteria to assess the quality of the resulting visual summary: spatial quality - how well does the ordering capture the structure of the data at each time step, and stability - how coherent are the orderings over consecutive time steps or temporal ranges? In this paper we introduce a new Stable Principal Component (SPC) method to compute such orderings, which is explicitly parameterized for stability, allowing a trade-off between the spatial quality and stability. We conduct extensive computational experiments that quantitatively compare the orderings produced by ours and other stable dimensionality-reduction methods to various state-of-the-art approaches using a set of well-established quality metrics that capture spatial quality and stability. We conclude that stable dimensionality reduction outperforms existing methods on stability, without sacrificing spatial quality or efficiency;in particular, our new SPC method does so at a fraction of the computational costs.

关键词： human-centered computing Visualization Visualization techniques Mathematics of computing Probability and statistics Statistical paradigms Dimensionality reduction

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Award for Outstanding Comprehensive Mini-Challenge 2 Solution - RadiationMonitor: An Interactive System for Visualizing and Exploring Spatial-Temporal Data 14

Award for Outstanding Comprehensive Mini-Challenge 2 Solutio...

引用

14th IEEE Conference on Visual Analytics Science and Technology (IEEE VAST)

作者： Wei, Datong Shao, Hanning Tan, Zijing Li, Chenlu Lin, Zhixian Dong, Xiaoju Yuan, Xiaoru Peking Univ Key Lab Machine Percept Minist Educ Beijing Peoples R China Peking Univ Sch EECS Beijing Peoples R China Peking Univ Natl Engn Lab Big Data Anal & Applicat Beijing Peoples R China Northwestern Univ Weinberg Coll Arts & Sci Evanston IL 60208 USA Shanghai Jiao Tong Univ Sch Elect Informat & Elect Engn Shanghai Peoples R China

ISBN: (纸本)9781728122847

In this paper, we proposed RadiationMonitor, an interactive system for visualizing and exploring spatial-temporal data from static and mobile sensors. We use pixel-based time-series visualization for event presentation, and the trajectories of mobile sensors are discretized to display the spatial distribution of sensor readings. Our system provides cross-filtering and detail-on-demand interactions, which allow users to investigate data from both spatial and temporal aspects.

关键词： human-centered computing Visualization Visualization application domains Visual analytics

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AR-supported human-Robot Collaboration: Facilitating Workspace Awareness and Parallelized Assembly Tasks 22

AR-supported Human-Robot Collaboration: Facilitating Workspa...

引用

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

作者： Lunding, Rasmus S. Lystbaek, Mathias N. Feuchtner, Tiare Gronbaek, Kaj Aarhus Univ Aarhus Denmark Univ Konstanz Constance Germany

ISBN: (纸本)9798350328387

While technologies for human-robot collaboration are rapidly advancing, plenty of aspects still need further investigation, such as ensuring workspace awareness, enabling the operator to reschedule tasks on the fly, and how users prefer to coordinate and collaborate with robots. To address these, we propose an Augmented Reality interface that supports human-robot collaboration in an assembly task by (1) enabling the inspection of planned and ongoing robot processes through dynamic task lists and a path visualization, (2) allowing the operator to also delegate tasks to the robot, and (3) presenting step-by-step assembly instructions. We evaluate our AR interface in comparison to a state-of-the-art tablet interface in a user study, where participants collaborated with a robot arm in a shared workspace to complete an assembly task. Our findings confirm the feasibility and potential of AR-assisted human-robot collaboration, while pointing to some central challenges that require further work.

关键词： human-centered computing human computer interaction (HCI) human-centered computing Mixed / augmented reality human-centered computing User studies Computer systems organization External interfaces for robotics

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SOUK: Social Observation of human Kinetics 13

SOUK: Social Observation of hUman Kinetics

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ACM International Joint Conference on Pervasive and Ubiquitous computing (UbiComp)

作者： Killijian, Marc-Olivier Roy, Matthieu Tredan, Gilles Zanon, Christophe CNRS LAAS 7 Ave Colonel Roche F-31400 Toulouse France Univ Toulouse LAAS F-31400 Toulouse France

ISBN: (纸本)9781450317702

Simulating human-centered pervasive systems requires accurate assumptions on the behavior of human groups. Recent models consider this behavior as a combination of both social and spatial factors. Yet, establishing accurate traces of human groups is difficult: current techniques capture either positions, or contacts, with a limited accuracy. In this paper we introduce a new technique to capture such behaviors. The interest of this approach lies in the unprecedented accuracy at which both positions and orientations of humans, even gathered in a crowd, are captured. From the mobility to the topological connectivity, the open-source framework we developed offers a layered approach that can be tailored, allowing to compare and reason about models and traces. We introduce a new trace of 50 individuals on which the validity and accuracy of this approach is demonstrated. To showcase the interest of our software pipeline, we compare it against the random waypoint model. Our fine-grained analyzes, that take into account social interactions between users, show that the random waypoint model is not a reasonable approximation of any of the phenomena we observed.

关键词： human-centered computing human mobility modeling

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