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检索条件"主题词=Human-centered computing"

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FLAD: A human-centered Video Content Flaw Detection System for Meeting Recordings 32

FLAD: A Human-centered Video Content Flaw Detection System f...

引用

32nd Workshop on Network and Operating Systems Support for Digital Audio and Video (NOSSDAV) Part of MMSys Conference

作者： Duan, Haihan Liao, Junhua Lin, Lehao Cai, Wei Chinese Univ Hong Kong Shenzhen Peoples R China Sichuan Univ Chengdu Peoples R China

ISBN: (纸本)9781450393836

Widely adopted digital cameras and smartphones have generated a large number of videos, which have brought a tremendousworkload to video editors. Recently, a variety of automatic/semi-automatic video editing methods have been proposed to tackle this issue in some specific areas. However, for the production of meeting recordings, the existing studies highly depend on additional conditions of conference venues, like infrared camera or special microphone, which are not practical. Moreover, current video quality assessment works mainly focus on the quality loss after compression or encoding rather than the human-centered video content flaws. In this paper, we design and implement FLAD, a human-centered video content flaw detection system for meeting recordings, which could build a bridge between subjective sense and objective measures from a human-centered perspective. The experimental results illustrate the proposed algorithms could achieve the state-of-the-art video content flaw detection performance for meeting recordings.

关键词： Video Editing Meeting Recordings human-centered computing Video Quality Assessment

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Streamlining Visualization Authoring in D3 Through User-Driven Templates

Streamlining Visualization Authoring in D3 Through User-Driv...

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IEEE Visualization Conference (VIS)

作者： Bako, Hannah Varma, Alisha Faboro, Anuoluwapo Haider, Mahreen Nerrise, Favour Kenah, Bissaka Battle, Leilani Univ Maryland College Pk MD 20742 USA Univ Washington Seattle WA 98195 USA

ISBN: (数字)9781665488129

ISBN: (纸本)9781665488129

D3 is arguably the most popular tool for implementing web-based visualizations. Yet D3 has a steep learning curve that may hinder its adoption and continued use. To simplify the process of programming D3 visualizations, we must first understand the space of implementation practices that D3 users engage in. We present a qualitative analysis of 2500 D3 visualizations and their corresponding implementations. We find that 5 visualization types (Bar Charts, Geomaps, Line Charts, Scatterplots, and Force Directed Graphs) account for 80% of D3 visualizations found in our corpus. While implementation styles vary slightly across designs, the underlying code structure for all visualization types remains the same;presenting an opportunity for code reuse. Using our corpus of D3 examples, we synthesize reusable code templates for eight popular D3 visualization types and share them in our open source repository. Based on our results, we discuss design considerations for leveraging users' implementation patterns to reduce visualization design effort through design templates and auto-generated code recommendations.

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

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Perceptions of Colour Pickers and Companions in Virtual Reality Art-Making

Perceptions of Colour Pickers and Companions in Virtual Real...

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

作者： Alex, Marylyn Wunsche, Burkhard C. Lottridge, Danielle Univ Auckland Auckland New Zealand

ISBN: (纸本)9781665484022

Virtual reality art is reshaping digital art experiences but may elicit different first impressions across disparate age groups. We investigate first impressions of VR colour pickers and the impact of a virtual companion via an online survey with 63 adults and 24 older adults. The colour pickers differed significantly in perceived hedonic qualities. We found no statistical differences between perceptions of adults and older adults. The virtual companion had no significant effect on participants' overall experiences. However, we found statistical trends where older adults rated the virtual companion higher in terms of companionship and making VR art more engaging.

关键词： human-centered computing human computer interaction (HCI) HCI design and evaluation methods User studies human-centered computing human computer interaction (HCI) Interaction Paradigms Virtual Reality

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Head in the Clouds - Floating Locomotion in Virtual Reality

Head in the Clouds - Floating Locomotion in Virtual Reality

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

作者： Ganapathi, Priya Thiel, Felix J. Swapp, David Steed, Anthony Indian Inst Technol Gauhati India UCL London England

ISBN: (纸本)9781665484022

Navigating large virtual spaces within the confines of a small tracked volume in a seated position becomes a serious accessibility issue when users' lower seating position reduces their visibility and makes it uncomfortable to reach for items with ease. Hence, we propose a "floating" accessibility technique, in which a seated VR user experiences the virtual environment from the perspective of a standing eye height. We conducted a user study comparing sitting, standing and floating conditions and observed that the floating technique had no detrimental effect in comparison to the standing technique and had a slight benefit over the sitting technique.

关键词： human-centered computing human Computer Interaction (HCI) Design and Evaluation Methods User Study human-centered computing Accessibility Accessibility Systems and Tools human-centered computing human Computer Interaction (HCI) Interaction Paradigms Virtual Reality

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Does Remote Expert Representation really matters: A comparison of Video and AR-based Guidance

Does Remote Expert Representation really matters: A comparis...

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

作者： Marques, Bernardo Silva, Samuel Dias, Paulo Santos, Beatriz Sousa Univ Aveiro DETI IEETA Aveiro Portugal

ISBN: (纸本)9781665484022

This work describes a user study aimed at understanding how the remote expert representation affects the sense of social presence in scenarios of remote guidance. We compared a traditional video chat solution with an Augmented Reality (AR) annotation tool. These were selected due to ongoing research with partners from the industry sector, following the insights of a participatory design process. A well defined -problem was used, i.e., a synchronous maintenance task with 4 completion stages that required a remote expert using a computer to guide 26 on -site participants wielding a handheld device. The results of the study are described and discussed.

关键词： human-centered computing human computer interaction (HCI) Interaction Paradigms Mixed/augmented reality human-centered computing human computer interaction (HCI) HCI Design and Evalution Methods User Studies

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Relationship Between the Sensory Processing Patterns and the Detection Threshold of Curvature Gain

Relationship Between the Sensory Processing Patterns and the...

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

作者： Matsumoto, Keigo Narumi, Takuji Univ Tokyo Grad Sch Informat Sci & Technol Tokyo Japan

ISBN: (纸本)9781665484022

This study examines the relationship between sensory processing patterns and the effects of redirected walking (RDW). Research efforts have been devoted to identifying the detection threshold (DT) of the RDW techniques, and various DTs have been reported in different studies. Recently, age, sex, and spatial ability have been found to be associated with the DTs of RDW techniques. A preliminary examination was conducted on the relationship between sensory processing patterns, as measured by the Adolescents/Adult Sensory Profile, and the DT of curvature gains, one of the fundamental RDW techniques, and it was suggested that the higher sensory sensitivity tendencies were associated with lower DT, i.e., participants were more likely to notice the RDW technique.

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

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Wormholes in VR: Teleporting Hands for Flexible Passive Haptics 21

Wormholes in VR: Teleporting Hands for Flexible Passive Hapt...

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

作者： Ban, Reigo Matsumoto, Keigo Narumi, Takuji Kuzuoka, Hideaki Univ Tokyo Tokyo Japan

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

Presenting haptic feedback in virtual reality (VR) is a long-standing challenge, with passive haptics being one way of presenting haptic feedback inexpensively. However, passive haptics requires props in physical environments that are co-located with their virtual counterparts, which is often not the case in the real world. Although redirected hands and other methods have previously been proposed to solve this problem, significant differences between the displayed and actual hand positions can cause the degradation of presence and sense of embodiment, limiting the range of presentable environments. In this study, we present a new hand displacement method called wormholes, in which the virtual hand is teleported discontinuously as the user inserts their hand into the hole. The experiment showed that the wormhole could maintain the sense of embodiment, presence, and task performance even with large hand displacements. Our method enables to apply passive haptics even when the actual and virtual environments are quite different, contributing to the realization of inexpensive and flexible haptic presentation in VR applications.

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

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B-Handy: An Augmented Reality System for Biomechanical Measurement

B-Handy: An Augmented Reality System for Biomechanical Measu...

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

作者： Campbell, James Cassinelli, Alvaro Saakes, Daniel Rompapas, Damien Extended Real Labs Brewed Engagement Adelaide SA Australia Hong Kong City Univ Sch Creat Media Hong Kong Peoples R China Univ Twente Design Prod Management Enschede Netherlands

ISBN: (纸本)9781665484022

The study of bio-mechanics allows us to infer measurements for every day objects without needing measurement tools. A limitation of this comes from the complex mental transformations of space involved. The efficiency of this task degrades the larger these measurements become. We present B-Handy, a system that offloads this mental workload by providing visual transformations of space in the form of tracking and duplicating the user's hand in AR. It is our hope that this system will simplify the complexity of these mental transformations and increase the efficiency of bio-mechanical measurements.

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

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Studying the Effects of Network Latency on Audio-Visual Perception During an AR Musical Task 21

Studying the Effects of Network Latency on Audio-Visual Perc...

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

作者： Hopkins, Torin Weng, Suibi Che-Chuan Vanukuru, Rishi Wenzel, Emma Banic, Amy Gross, Mark D. Do, Ellen Yi-Luen Univ Colorado Boulder ATLAS Inst Boulder CO 80309 USA Univ Wyoming Interact Real Lab Laramie WY 82071 USA

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

Augmented Reality (AR), with its ability to make people feel like they are in the same space as friends from across the world, is an ideal medium for the purpose of Networked Musical Collaboration. Most conventional systems that enable networked musical collaboration minimize network latency by focusing on the transfer of auditory information at the expense of visual feedback. Studies into human perception have shown that sensory integration of audio and visual stimuli can take place even when there is a slight delay between the two signals. We studied the way changes in network latency effect participants' auditory and visual perception in latency detection, latency tolerance and attention focus;in this paper, we explore the trade-off between the presence of AR visuals and the minimization of latency. Twenty-four participants were asked to play a hand drum and collaborate with a prerecorded remote musician rendered as an avatar in AR. Multiple trials involving different levels of audio-visual latency were conducted. We then analyzed the subjective responses of the participants together with the recorded musical information from each session. Results indicate a minimum noticeable delay value-defined as the highest amount of delay that can be experienced before two stimulated senses are perceived as separate events-between 160 milliseconds (ms) and 320 ms. Players also reported that a delay between sound and an accompanying avatar animation became less tolerable at 320 ms of delay, but was never completely intolerable, even up to 1200 ms of delay. We conclude that players begin to notice delay at about 320 ms and most players can tolerate large delays between sound and animation.

关键词： human-centered computing Interaction paradigms Mixed / augmented reality human-centered computing Interaction paradigms Collaborative Interaction Applied computing Sound and music computing

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Designing a Topic-Based Literature Exploration Tool in AR - An exploratory study for neuroscience 21

Designing a Topic-Based Literature Exploration Tool in AR - ...

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

作者： Tanhaei, Ghazaleh Troost, Ivar Hardman, Lynda Hurst, Wolfgang Univ Utrecht Utrecht Netherlands CWI Amsterdam Netherlands

ISBN: (数字)9781665453653

ISBN: (纸本)9781665453653

The large and increasing amount of scientific literature makes it difficult for researchers to analyse and understand relations between topics even in their specific sub-field. Neuroscience researchers are interested in relations between, for example, anatomical regions of the brain and the diseases that affect them. To explore relations in the extensive body of literature, using the topics themselves rather than individual articles, can provide a higher-level approach. We have created a prototype interactive AR environment to learn more about how topic-based literature browsing might aid researchers in analysing and understanding relations between topics. Given the three-dimensional nature of the brain, we postulate that visualizing neuroscience topics in Augmented Reality would support the exploration of relations between them and thus improve and extend existing literature exploration workflows. We follow a user-centered approach to identify visualization and interaction design requirements. Using an existing analysis of tens of thousands of neuroscience papers, we designed an interactive AR environment to support researchers in finding relations between brain regions and brain diseases that integrates with existing literature review practices. We carried out two qualitative evaluations to verify our design, first with eight neuroscience students as domain experts and then with seven experienced researchers as literature exploration experts. Our analysis of participants' feedback shows that visualizing topics and their relations in the immersive AR environment is clear, understandable and helpful for topic-based literature exploration, specifically, between brain regions and brain diseases. Our AR literature exploration tool has the potential to be used by neuroscientists in their routine literature reviews.

关键词： human-centered computing Visualization systems and tools Immersive Analytics Augmented Reality

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