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检索条件"主题词=Human-centered computing"

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Blending Spaces: Cross-Reality Interaction Techniques for Object Transitions Between Distinct Virtual and Augmented Realities 21

Blending Spaces: Cross-Reality Interaction Techniques for Ob...

引用

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

作者： Cools, Robbe Esteves, Augusto Simeone, Adalberto L. Katholieke Univ Leuven Dept Comp Sci Leuven Belgium Univ Lisbon ITI LARSyS Inst Super Tecn Lisbon Portugal

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

Cross-Reality (CR) involves interaction between different modalities and levels of immersion such as Virtual and Augmented Reality, as we explore in this paper. Whereas previous work assumed similarity between their respective Virtual and Augmented Environment (VE and AE), we explore the case in which VE and AE are distinct. This gives rise to novel and critical problems, such as how to visualise and interact with the other environment. In this context we investigate the fundamental interaction of transitioning an object across environments, to which we contribute five interaction techniques. Two are inspired by literature: Virtual Magic Lens and Binary Transition;while the other three are entirely novel: Auto Blended Space, Manual Blended Space - Button Transition and Manual Blended Space - Touch Transition. In a study evaluating the first four techniques, we found that participants (N=20) performed a CR object manipulation and transition task significantly faster using our Auto Blended Space technique. We then modified Manual Blended Space - Button Transition into Manual Blended Space - Touch Transition in response to these results, and reassessed the four techniques in a more complex object manipulation task (N=16). We found that this type of task was better suited to manual transition methods rather than automatic methods. Taken together, our final contribution are five blended space design factors, and timely Cross-Reality transition design guidelines.

关键词： human-centered computing Mixed / augmented reality human-centered computing Virtual reality

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Flexible XR Prototyping - A Sports Spectating Example 21

Flexible XR Prototyping - A Sports Spectating Example

引用

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

作者： Wei Hong Lo Regenbrecht, Holger Zollmann, Stefanie Univ Otago Dunedin New Zealand

ISBN: (数字)9781665453653

ISBN: (纸本)9781665453653

Extended Reality (XR) prototyping is a useful way that has the potential to assist the AR application development process. It allows for off-site development and evaluation in cases where on-site access is challenging or even impossible. In this work, we summarize our Flexible XR Prototyping framework, showing the different phases and considerations needed for an improved and more effortless XR prototyping experience. We then show how this can be used for the example use case of AR sports spectating in a stadium and provide some examples of the different prototypes developed for an on-site AR sports spectating application. Our goal is to share our own experience in AR prototyping and to spark discussion on the XR prototyping process.

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

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Selection Techniques for 3D Extended Desktop Workstation with AR HMD 21

Selection Techniques for 3D Extended Desktop Workstation wit...

引用

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

作者： Plasson, Carole Blanch, Renaud Nigay, Laurence Univ Grenoble Alpes CNRS Grenoble INP LIG F-38000 Grenoble France

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

Extending a standard desktop workstation (i.e. a screen, a mouse, a keyboard) with virtual scenes displayed on an Augmented Reality Head-Mounted Display (AR HMD) offers many identified advantages including limited physical space requirements, very large and flexible display spaces, and 3D stereoscopic views. While the technologies become more mainstream, the remaining open question is how to interact with such hybrid workstations that combine 2D views displayed on a physical monitor and 3D views displayed on a HoloLens. For a selection task, we compared mouse-based interaction (standard for 2D desktop workstations) and direct touch interaction in mid-air (standard for 3D AR) while considering different positions of the 3D scene according to a physical monitor. To extend mouse-based selection to 3D views, we experimentally explored different interaction metaphors where the mouse cursor moves either on a horizontal or a vertical plane in a 3D virtual scene. To check for ecological validity of our results, we conducted an additional study focusing on interaction with a 2D/3D Gapminder dataset visualization. The results show 1) that the mouse-based interaction, as compared to direct touch interaction in mid-air, is easy and efficient, 2) that using a vertical plane placed in front of the 3D virtual scene to mimic the double screen metaphor outperforms other interaction techniques and 3) that flexibility is required to allow users to choose the selection techniques and to position the 3D virtual scene relative to the physical monitor. Based on these results, we derive interaction design guidelines for hybrid workstations.

关键词： human-centered computing Visualization Interaction techniques Hybrid 2D/3D workstation AR

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Learning to regulate 3D head shape by removing occluding hair from in-the-wild images 21

Learning to regulate 3D head shape by removing occluding hai...

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

作者： Anisetty, Sohan Saravanabavan, Varsha Cai Yiyu IIT Dharwad Dharwad Karnataka India NTU Singapore Singapore Singapore

ISBN: (数字)9781665453653

ISBN: (纸本)9781665453653

Recent 3D face reconstruction methods reconstruct the entire head compared to earlier approaches which only model the face. Although these methods accurately reconstruct facial features, they do not explicitly regulate the upper part of the head. Extracting information about this part of the head is challenging due to varying degrees of occlusion by hair. We present a novel approach for modeling the upper head by removing occluding hair and reconstructing the skin, revealing information about the head shape. We introduce three objectives: 1) a dice consistency loss that enforces similarity between the overall head shape of the source and rendered image, 2) a scale consistency loss to ensure that head shape is accurately reproduced even if the upper part of the head is not visible, and 3) a 71 landmark detector trained using a moving average loss function to detect additional landmarks on the head. These objectives are used to train an encoder in an unsupervised manner to regress FLAME parameters from in-the-wild input images. Our unsupervised 3DMM model achieves state-of-the-art results on popular benchmarks and can be used to infer the head shape, facial features, and textures for direct use in animation or avatar creation.

关键词： human-centered computing Visualization 3D morphable models

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Empathic AuRea: Exploring the Effects of an Augmented Reality Cue for Emotional Sharing Across Three Face-to-Face Tasks 29

Empathic AuRea: Exploring the Effects of an Augmented Realit...

引用

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

作者： Valente, Andreia Lopes, Daniel Simoes Nunes, Nuno Esteves, Augusto Univ Lisbon Inst Super Tecn Lisbon Portugal Univ Lisbon Inst Super Tecn INESC ID Lisbon Portugal Univ Lisbon Inst Super Tecn ITI LARSyS Lisbon Portugal

ISBN: (纸本)9781665496179

The Empathy-Effective Communication hypothesis states the better a speaker can understand their listener's emotions, the better can they transmit information;and the better a listener can understand the speaker's emotions, the better can they apprehend the information. Previous emotional sharing systems have managed to create a space of emotional understanding between collaborators on remote locations using bio-sensing, but how a context of face-to-face communication can benefit from biofeedback is still to be studied. This study introduces a new Augmented Reality communication cue from an emotion recognition neural network model, trained using electrocardiogram physiological data (AuRea). The proposed design is meant to facilitate emotional state understanding, increasing cognitive empathy without compromising the existing verbal, nonverbal, and paraverbal communication cues. We conducted a study where pairs of participants (N=12) engaged in three tasks where AuRea was found to positively affect performance and emotional understanding, but negatively affect memorization.

关键词： human-centered computing Collaborative and social computing Empirical studies in collaborative and social computing human-centered computing human computer interaction (HCI) Interaction paradigms Mixed / augmented reality

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Petting a cat helps you incarnate the avatar: Influence of the emotions over embodiment in VR 21

Petting a cat helps you incarnate the avatar: Influence of t...

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

作者： Freeling, Benjamin Lecuyer, Flavien Capobianco, Antonio Univ Strasbourg iCube Strasbourg France

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

Thanks to its strong capacity to immerse users in virtual worlds, virtual reality can elicit various emotions with diverse environments. This aspect of virtual reality makes it an interesting and powerful tool in many fields, such as entertainment with scenarios based on a strong emotional implication, training in particular for social or communication skills, or even medical therapy with phobia or addiction treatment. However, in virtual reality the participant lives the experience through an avatar, and feels the emotion according to what happens to this avatar. This paper discusses the link between embodiment and emotional implication in virtual reality. In particular, we looked at how emotions and the sense of embodiment are correlated in virtual reality. Through an experiment, we demonstrate that the sense of embodiment is strongly correlated with the emotional experience of the virtual environment. The sense of embodiment is increased when the virtual scenarios make the participants feel strong emotions, whether those emotions are positive or negative. We also show that emotions mainly affect two sub-components of embodiment: the appearance and response sub-scales.

关键词： computing methodologies Computer graphics Graphics systems and interfaces Virtual reality computing methodologies Computer graphics Graphics systems and interfaces Perception human-centered computing human computer interaction (HCI) Empirical studies in HCI

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AR HMD for Remote Instruction in Healthcare

AR HMD for Remote Instruction in Healthcare

引用

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

作者： Mentis, Helena M. Avellino, Ignacio Seo, Jwawon Univ Maryland Baltimore Cty Baltimore MD 21228 USA Sorbonne Univ ISIR CNRS Paris France

ISBN: (纸本)9781665484022

In the following position paper we introduce the use of AR HMD for remote instruction in healthcare and present the challenges our team has faced in achieving this application in two contexts: surgical telementoring and paramedic teleconsulting. After the presentation of how these challenges come to be and indications on how to address them, we argue that those who wish to pursue this area of research must be grounded in best practices from the field of CSCW integrated with technical innovations in AR interaction development. This is a truly interdisciplinary research and development area that has many challenging topics to tackle through collaborative efforts.

关键词： human-centered computing Visualization

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

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

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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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Virtual humans with Pets and Robots: Exploring the Influence of Social Priming on One's Perception of a Virtual human 29

Virtual Humans with Pets and Robots: Exploring the Influence...

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

作者： Norouzi, Nahal Gottsacker, Matthew Bruder, Gerd Wisniewski, Pamela J. Bailenson, Jeremy Welch, Greg Univ Cent Florida Orlando FL 32816 USA Stanford Univ Stanford CA 94305 USA

ISBN: (纸本)9781665496179

Social priming is the idea that observations of a virtual human (VH) engaged in short social interactions with a real or virtual human bystander can positively influence users' subsequent interactions with that VH. In this paper we investigate the question of whether the positive effects of social priming are limited to interactions with humanoid entities. For instance, virtual dogs offer an attractive candidate for non-humanoid entities, as previous research suggests multiple positive effects. In particular, real human dog owners receive more positive attention from strangers than non-dog owners. To examine the influence of such social priming we carried out a human-subjects experiment with four conditions: three social priming conditions where a participant initially observed a VH interacting with one of three virtual entities (another VH, a virtual pet dog, or a virtual personal robot), and a non-social priming condition where a VH (alone) was intently looking at her phone as if reading something. We recruited 24 participants and conducted a mixed-methods analysis. We found that a VH's prior social interactions with another VH and a virtual dog significantly increased participants' perceptions of the VHs' affective attraction. Also, participants felt more inclined to interact with the VH in the future in all of the social priming conditions. Qualitatively, we found that the social priming conditions resulted in a more positive user experience than the non-social priming condition. Also, the virtual dog and the virtual robot were perceived as a source of positive surprise, with participants appreciating the non-humanoid interactions for various reasons, such as the avoidance of social anxieties sometimes associated with humans.

关键词： human-centered computing Interaction paradigms Mixed / augmented reality human-centered computing human computer interaction (HCI) HCI design and evaluation methods User studies Computer graphics Graphics systems and interfaces Mixed / augmented reality

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Effects of Rendering Styles of a Virtual Character on Avoidance Movement Behavior 21

Effects of Rendering Styles of a Virtual Character on Avoida...

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

作者： Nelson, Michael G. Koilias, Alexandros Anagnostopoulos, Christos-Nikolaos Mousas, Christos Purdue Univ Dept Comp Graph Technol W Lafayette IN 47907 USA Univ Aegean Dept Cultural Technol & Commun Mitilini 81100 Greece

ISBN: (数字)9781665453653

ISBN: (纸本)9781665453653

Avoidance movements between humans performing locomotive tasks and virtual characters represent typical interactions in immersive virtual environments. When performing these avoidance maneuvers, decisions are based on several factors, including self-presence and the perception of other virtual individuals. However, the impact of visual information on collision-free interactions is not yet fully understood. In this study, we aim to manipulate how the appearance of virtual characters is represented using five different rendering styles (realistic, toon, creepy, scary, and robot) to understand how alternate appearances could potentially affect the avoidance movement behavior of participants. To gather avoidance behavior data, 24 healthy participants performed a two-trial locomotive task toward a target in a virtual environment. Our results indicated that eerie rendering styles affected trajectory length, duration, speed, minimum distance, and side-by-side distance measurements. Additionally, most participants maintained a minimum distance behind the virtual characters and avoided them by keeping to their left side in all examined conditions. We posit that the presented findings contribute toward a fuller understanding of the effects of the appearance of virtual characters on avoidance movement behavior in room-scale virtual environments.

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

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