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检索条件"主题词=Human-centered computing"

共 2020 条记录，以下是1051-1060 订阅

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On the Visualization of Hierarchical Multivariate Data 14

On the Visualization of Hierarchical Multivariate Data

引用

14th IEEE Pacific Visualization Symposium (IEEE PacificVis)

作者： Zheng, Boyan Sadlo, Filip Heidelberg Univ Heidelberg Germany

ISBN: (纸本)9781665439312

In this paper, we study the visual design of hierarchical multivariate data analysis. We focus on the extension of four hierarchical univariate concepts-the sunburst chart, the icicle plot, the circular treemap, and the bubble treemap-to the multivariate domain. Our study identifies several advantageous design variants, which we discuss with respect to previous approaches. and whose utility we evaluate with a user study and demonstrate for different analysis purposes and different types of data.

关键词： human-centered computing Visualization Visualization techniques Treemaps human-centered computing Visualization Visualization application domains Information visualization

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StuckInSpace: Exploring the Difference Between Two Different Mediums of Play in a Multi-Modal Virtual Reality Game 28

StuckInSpace: Exploring the Difference Between Two Different...

引用

28th IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Malinov, Yoan-Daniel Millard, David E. Blount, Tom Univ Southampton Southampton Hants England

ISBN: (纸本)9781665418386

With the rising popularity of Virtual Reality (VR), there is also a rising interest in co-located multiplayer experiences, as people want to play VR games together with their friends. As having multiple VR headsets is out of reach to the average consumer, we need to look into different possible ways of including multiple people in this play space. We have created a multi-modal co-located multiplayer VR game, Stuck in Space, that introduces a second player in two ways - one with a PC (the baseline that a lot of current games do), as well as a tracked Phone that can be used as a `window into the virtual world'. We have conducted a user study (n = 24) where we explore the difference in immersion and co-presence between the two versions using two questionnaires (IPQ and NMMoSP), as well as a thematic analysis of the subsequent interview data, from which 5 themes emerged. Surprisingly, we found no significant difference in co-presence or immersion based on the quantitative data. However, the qualitative analysis helps reveal one of the main reasons why that is - maintaining a mental model of the real world while also being in the virtual world makes it harder for the person wearing the headset to immerse themselves and feel co-present. From these themes and sub-themes we theorize that each of the two versions has positives and negatives that cancel each other out in the quantitative data, and for there to be a difference we would need to accentuate or change certain elements of the game. The results show that introducing a second player through a Phone is not detrimental in terms of co-presence and immersion and that it is a viable way of doing so, although certain design considerations would have to be taken into account to minimize the negatives.

关键词： human-centered computing User studies human-centered computing Virtual reality human-centered computing Collaborative interaction Applied computing Computer games

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MARTYR: Exploring Ingredients of Virtual Dining Experiences

MARTYR: Exploring Ingredients of Virtual Dining Experiences

引用

28th IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Jaller, Camilla Andersen, Nicklas B. S. Nilsson, Niels C. Paisa, Razvan Damsbo, Mads Serafin, Stefania Aalborg Univ Aalborg Denmark MAKROPOL Copenhagen Denmark

ISBN: (纸本)9781665440578

MARTYR is a dinner performance that explores food and collective virtual reality and premiered on October 22nd 2020. In this paper, we present the evaluation of two prototypes used to explore how virtual reality can affect dining experiences and how food can be used as an ingredient in virtual narratives. The results indicate that virtual reality can be used to affect perceived taste. However, the effect varied considerably between participants. Moreover, the participants appeared to accept food as an element of a virtual story, but it is unclear to what extent taste affected their experience of the narrative.

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

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The Effects of Virtual Avatar Visibility on Pointing Interpretation by Observers in 3D Environments 20

The Effects of Virtual Avatar Visibility on Pointing Interpr...

引用

20th IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Benda, Brett Ragan, Eric D. Univ Florida Dept Comp & Informat Sci & Engn Gainesville FL 32611 USA

ISBN: (纸本)9781665401586

Avatars are often used to provide representations of users in 3D environments, such as desktop games or VR applications. While full-body avatars are often sought to be used in applications, low visibility avatars (i.e., head and hands) are often used in a variety of contexts, either as intentional design choices, for simplicity in contexts where full-body avatars are not needed, or due to external limitations. Avatar style can also vary from more simplistic and abstract to highly realistic depending on application context and user choices. We present the results of two desktop experiments that examine avatar visibility, style, and observer view on accuracy in a pointing interpretation task. Significant effects of visibility were found, with effects varying between horizontal and vertical components of error, and error amounts not always worsening as a result of lowering visibility. Error due to avatar visibility was much smaller than error resulting from avatar style or observer view. Our findings suggest that humans are reasonably able to understand pointing gestures with a limited observable body.

关键词： human-centered computing human computer interaction Interaction techniques Pointing human-centered computing human computer interaction Interaction paradigms Collaborative interaction

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The Owl: Immersive Telepresence Communication for Hybrid Conferences 20

The Owl: Immersive Telepresence Communication for Hybrid Con...

引用

20th IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Kachach, Redouane Morcuende, Sandra Gonzalez-Morin, Diego Perez-Garcia, Pablo Gonzalez-Sosa, Ester Pereira, Francisco Villegas, Alvaro Nokia Bell Labs Holmdel NJ 07733 USA

ISBN: (纸本)9781665412988

The Owl is an immersive telepresence communication system in which remote attendees feel teleported to a physical location where a capture/communication device is placed. During the session they can interact naturally with the people present in that location and also with the other remote participants. Remote attendees get the full immersive experience using commercial VR goggles or Android phones with cardboard-like HMDs. It is also possible to engage in the experience using Android phones or tablets without HMD;in this case the gaze in the remote scenario is controlled using the user's fingers on the screen. Remote attendees using HMD are represented through avatars in the scene, while participants using plain phones or tablets will get their real time video captured by the device and rendered in overlayed windows. The latter can also be used to provide the local attendees (with) a real-time view of both the remote participants and their local surroundings. Client Software can be downloaded and installed by any user on standard devices.

关键词： human-centered computing Collaborative Interaction human-centered computing Virtual Reality

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Parsing and Summarizing Infographics with Synthetically Trained Icon Detection 14

Parsing and Summarizing Infographics with Synthetically Trai...

引用

14th IEEE Pacific Visualization Symposium (IEEE PacificVis)

作者： Madan, Spandan Bylinskii, Zoya Nobre, Carolina Tancik, Matthew Recasens, Adria Zhong, Kimberli Alsheikh, Sami Oliva, Aude Durand, Fredo Pfister, Hanspeter Harvard Univ Cambridge MA 02138 USA Adobe Res San Francisco CA USA Univ Calif Berkeley Berkeley CA USA MIT Cambridge MA 02139 USA

ISBN: (纸本)9781665439312

Widely used in news, business, and educational media, infographics are handcrafted to effectively communicate messages about complex and often abstract topics including 'ways to conserve the environment' and `coronavirus prevention'. The computational understanding of infographics required for future applications like automatic captioning, summarization, search, and question-answering, will depend on being able to parse the visual and textual elements contained within. However, being composed of stylistically and semantically diverse visual and textual elements. infographics pose challenges for current A.I. systems. While automatic text extraction works reasonably well on infographics, standard object detection algorithms fail to identify the stand-alone visual elements in infographics that we refer to as `icons'. In this paper, we propose a novel approach to train an object detector using synthetically-generated data, and show that it succeeds at generalizing to detecting icons within in-the-wild infographics. We further pair our icon detection approach with an icon classifier and a state-of-the-art text detector to demonstrate three demo applications: topic prediction, multi-modal summarization. and multi-modal search. Parsing the visual and textual elements within infographics provides us with the first steps towards automatic infographic understanding.

关键词： human-centered computing Visualization Visualization systems and tools Visualization toolkits computing methodologies Artificial intelligence Computer vision Computer vision problems Object detection

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An Empirical Study of Size Discrimination in Augmented Reality 20

An Empirical Study of Size Discrimination in Augmented Reali...

引用

20th IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Wang, Liwen Sandor, Christian City Univ Hong Kong Sch Creat Media Hong Kong Peoples R China

ISBN: (纸本)9781665412988

Existing psychophysical experiments show that size perception can influence the human identification of object properties (e.g., shape or weight) in augmented reality (AR). Some recent studies have revealed the detection threshold of object size in real physical objects. However, the users' absolute detection threshold of object size augmentation is not clear, which limits the further evaluation of AR design. In this paper, we present two two-alternative forced-choicebased experiments on size perception of virtual objects in AR to explore the detection threshold of size difference in object augmentation. Our experimental results demonstrate that the user's point of subjective equality (PSE) is 4.00%, and the size difference could be easily detected when the virtual object is larger than 5.18%.

关键词： Augmented Reality Size discrimination human-centered computing Psychophysics Augmented Reality

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Reproduction of Environment Reflection using Extrapolation of Front Camera Images in Mobile AR 20

Reproduction of Environment Reflection using Extrapolation o...

引用

20th IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Odajima, Shun Komuro, Takashi Saitama Univ Grad Sch Sci & Engn Saitama Japan

ISBN: (纸本)9781665412988

In this paper, we propose a method to reproduce the reflection of a real scene on a virtual object using only the images captured by a camera attached to the front of a mobile device. Since it is not possible to acquire the entire scene using only the front camera, the area surrounding the front camera image is extrapolated to obtain a sufficient scene for reflection. Image transformation using deep neural networks is used for extrapolation, and high-quality and stable extrapolation is realized by using the extrapolation results in the previous frame. As a result of experiment that evaluated the quality of extrapolation and reproduction of reflection, we confirmed that both extrapolated images and reproduced reflection looked natural. We also conducted an experiment to evaluate users' impression of the reflection. The results showed that the proposed method was effective for participants who knew about AR in naturalness of reflection and material perception.

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

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Compelling AR Earthquake Simulation with AR Screen Shaking 20

Compelling AR Earthquake Simulation with AR Screen Shaking

引用

20th IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Chotchaicharin, Setthawut Schirm, Johannes Isoyama, Naoya Uchiyama, Hideaki Kiyokawa, Kiyoshi Nara Inst Sci & Technol Nara Japan

ISBN: (纸本)9781665412988

Our goal is to simulate earthquakes in a familiar environment, for example in one's own office, helping users to take the simulation more seriously. We propose an AR earthquake simulation using a video see-through VR headset, use real earthquake data, and implement a novel AR screen shake technique, realistically shaking the entire view of the user. We run a user study (n=25), where participants experienced an earthquake both in a VR scene and two AR scenes with and without the AR screen shake technique. Our results suggest that both AR scenes offer a more compelling experience compared to the VR scene, and the AR screen shake improved immediacy and was preferred by most participants. This showed us how virtual safety training can greatly benefit from an AR implementation, motivating us to further explore this approach for the case of earthquakes.

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 evaluation methods User studies computing methodologies Modeling and simulation Simulation types and techniques Real-time simulation

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TransforMR: Pose-Aware Object Substitution for Composing Alternate Mixed Realities 20

TransforMR: Pose-Aware Object Substitution for Composing Alt...

引用

20th IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Kari, Mohamed Grosse-Puppendahl, Tobias Coelho, Luis Falconeri Fender, Andreas Rene Bethge, David Schutte, Reinhard Holz, Christian Porsche AG Stuttgart Germany Univ Duisburg Essen Duisburg Germany Swiss Fed Inst Technol Dept Comp Sci Zurich Switzerland

ISBN: (纸本)9781665401586

Despite the advances in machine perception, semantic scene understanding is still a limiting factor in mixed reality scene composition. In this paper, we present TransforMR, a video see-through mixed reality system for mobile devices that performs 3D-pose-aware object substitution to create meaningful mixed reality scenes. In real-time and for previously unseen and unprepared real-world environments, TransforMR composes mixed reality scenes so that virtual objects assume behavioral and environment-contextual properties of replaced real-world objects. This yields meaningful, coherent, and human-interpretable scenes, not yet demonstrated by today's augmentation techniques. TransforMR creates these experiences through our novel pose-aware object substitution method building on different 3D object pose estimators, instance segmentation, video inpainting, and pose-aware object rendering. TransforMR is designed for use in the real-world, supporting the substitution of humans and vehicles in everyday scenes, and runs on mobile devices using just their monocular RGB camera feed as input. We evaluated TransforMR with eight participants in an uncontrolled city environment employing different transformation themes. Applications of TransforMR include real-time character animation analogous to motion capturing in professional film making, however without the need for preparation of either the scene or the actor, as well as narrative-driven experiences that allow users to explore fictional parallel universes in mixed reality. We make all of our source code and assets available(1).

关键词： human-centered computing Mixed / augmented reality

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