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检索条件"主题词=Human-centered computing"

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Development of an Immersive Virtual Colonoscopy Viewer for Colon Growths Diagnosis

Development of an Immersive Virtual Colonoscopy Viewer for C...

引用

30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Serras, Joao Maciel, Anderson Paulo, Soraia Duchowski, Andrew Kopper, Regis Moreira, Catarina Jorge, Joaquim ULisboa IST Lisbon Portugal ULisboa IST INESC ID Lisbon Portugal Clemson Univ Clemson SC 29631 USA UNC Greensboro Greensboro NC USA Queensland Univ Technol Brisbane Qld Australia

ISBN: (纸本)9798350348392

Desktop-based virtual colonoscopy has been proven to be an asset in the identification of colon anomalies. 'f he process is accurate, although time-consuming. The use of immersive interfaces for virtual colonoscopy is incipient and not yet understood, In this work, we present a new design exploring elements of the VR paradigm to make the immersive analysis more efficient while still effective. We also plan the conduction of experiments with experts to assess the multi-factor influences of coverage, duration, and diagnostic accuracy.

关键词： human-centered computing human computer interaction (HCI) nteraction paradigms Virtual reality Applied computing Life and medical sciences Computational biology Imaging

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Examining the Fine Motor Control Ability of Linear Hand Movement in Virtual Reality 30

Examining the Fine Motor Control Ability of Linear Hand Move...

引用

30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Yi, Xin Wang, Xueyang Li, Jiaqi Li, Hewu Tsinghua Univ Zhongguancun Lab Beijing Peoples R China Tsinghua Univ Beijing Peoples R China

ISBN: (纸本)9798350348156

Linear hand movement in mid-air is one of the most fundamental interactions in virtual reality (e.g., when dragging/scaling/manipulating objects and drawing shapes). However, the lack of tactile feedback makes it difficult to precisely control the direction and amplitude of hand movement. In this paper, we conducted three user studies to progressively examine users' ability of fine motor control in 3D linear hand movement tasks. In Study 1, we examined participants' behavioural patterns when drawing straight lines in various directions and lengths, using both the hand and the controller. Results showed that the exhibited stroke length tended to be longer than perceived, regardless of the interaction tool. While displaying the trajectory could help reduce directional and length errors. In Study 2, we further tested the effect of different visual references and found that, compared with an empty room or cluttered scenarios, providing only a virtual table yielded higher input precision and user preference. In Study 3, we repeated Study 2 in real dragging and scaling tasks and verified the generalizability of the findings in terms of input error. Our core finding is that the user's hand moves significantly longer than the task length due to the underestimation of stroke length, yet the error of the Z-axis movement is smaller than that of the X-axis and the Y-axis, and a simple virtual desktop can effectively reduce errors.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Virtual reality human-centered computing human computer interaction (HCI) HCI design and evaluation methods User models

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Auxiliary Means to Improve Motion Guidance Memorability in Extended Reality

Auxiliary Means to Improve Motion Guidance Memorability in E...

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Gebhardt, Patrick Weiss, Maximilian Huszar, Pascal Yu, Xingyao Achberger, Alexander Zhang, Xiaobing Sedlmair, Michael Univ Stuttgart Stuttgart Germany Mercedes Benz AG Stuttgart Germany China Mobile Jiangxi Virtual Real Technol Co Ltd Nanchang Jiangxi Peoples R China

ISBN: (纸本)9798350348392

VR-based motion guidance systems can provide 3D movement instructions and real-time feedback for practicing movement without a live instructor. However, the precise visualization of movement paths or postures may be insufficient to learn a new motor skill, as they might make users too dependent and lead to poor performance when there is no guidance. In this paper, we propose to use enhanced error visualization, asymptotic path, increasing transparency, and haptic constraint to improve the memorability of motion guidance. Our study results indicated that adding an enhanced error feedback visualization helped the users with short-term retention.

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

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Streamlining Physiological Observations in Immersive Virtual Reality Studies with the Virtual Reality Scientific Toolkit

Streamlining Physiological Observations in Immersive Virtual...

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Deuchler, Jonas Hettmann, Wladimir Hepperle, Daniel Woelfel, Matthias Hsch Karlsruhe Karlsruhe Germany Univ Hohenheim Stuttgart Germany

ISBN: (纸本)9798350348392

The open-source Virtual Reality Scientific Toolkit (VRSTK) facilitates designing and conducting user studies in immersive virtual reality (VR) environments within the Unity 3D real-time development platform. Features include recording and reviewing scenes, collecting and evaluating user-specific data from sensors or in-VR questionnaires, and remote and multi-user setups. In this paper, we describe the core features of the VRSTK by guiding the reader through a hypothetical user study.

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Techniques for Immersive Data Storytelling

Techniques for Immersive Data Storytelling

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Jain, Radhika Pankaj Univ South Australia Adelaide SA Australia

ISBN: (纸本)9798350348392

Developments in immersive technologies has led to the emergence of immersive analytics Immersive analytics takes data visualisation beyond the traditional 2D displays. At the same time, data storytelling has become a prevalent method for communicating data. Combining both data storytelling and immersive analytics gives rise to "immersive data storytelling". Immersive data storytelling refers to telling visually compelling data stories in an immersive environment such as as virtual reality, augmented reality, mixed reality and 360 videos. Currently, immersive data storytelling is under-explored from an academic stand point. The research presented here aims to develop techniques and guidelines for effective data storytelling in various immersive environments.

关键词： Immersive Data Storytelling Immersive Environments Wearable computing human-centered computing

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Exploring Affordances for AR in Laparoscopy

Exploring Affordances for AR in Laparoscopy

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Negrao, Matheus Jorge, Joaquim Vissoci, Joao Kopper, Regis Maciel, Anderson Univ Fed Rio Grande do Sul INF Porto Alegre RS Brazil ULisboa IST INESC ID Lisbon Portugal Duke Univ Durham NC 27706 USA UNC Greensboro Greensboro NC USA

ISBN: (纸本)9798350348392

This paper explores the possibilities of designing AR interfaces to be used during laparoscopy surgery. It suggests that the laparoscopic video be displayed on AR headsets and that surgeons can consult preoperative image data on that display. Interaction with these elements is necessary, and no patterns exist to design them. Thus the paper proposes a head -gaze and clicker approach that is effective and minimalist. Finally, a prototype is presented, and an evaluation protocol is briefly discussed.

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

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Level-of-Detail AR: Dynamically Adjusting Augmented Reality Level of Detail Based on Visual Angle 30

Level-of-Detail AR: Dynamically Adjusting Augmented Reality ...

引用

30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Wysopal, Abby Ross, Vivian Passananti, Joyce Yu, Kangyou Huynh, Brandon Hollerer, Tobias Univ Calif Santa Barbara Comp Sci Dept Santa Barbara CA 93106 USA

ISBN: (纸本)9798350348156

Dynamically adjusting the content of augmented reality (AR) applications to efficiently display information best fitting the available screen estate may be important for user performance and satisfaction. Currently, there is not a common practice for dynamically adjusting the content of AR applications based on their apparent size in the user's view of the surround environment. We present a Level-of-Detail AR mechanism to improve the usability of AR applications at any relative size. Our mechanism dynamically renders textual and interactable content based on its legibility, interactability, and viewability respectively. When tested, Level-of-Detail AR functioned as intended out-of-the-box on 44 of the 45 standard user interface Unity prefabs in Microsoft's Mixed Reality Tool Kit. We additionally evaluated impact on task performance, user distance, and subjective satisfaction through a mixed-design user study with 45 participants. Statistical analysis of our results revealed significant task-dependent differences in user performance between the modes. User satisfaction was consistently higher for the Level-of-Detail AR condition.

关键词： human-centered computing- human computer interaction (HCI) -Interaction paradigms- Mixed / augmented reality human-centered computing Interaction design Interaction design process and methods User interface design

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Remote Monitoring and Teleoperation of Autonomous Vehicles-Is Virtual Reality an Option? 22

Remote Monitoring and Teleoperation of Autonomous Vehicles-I...

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

作者： Kalamkar, Snehanjali Biener, Verena Beck, Fabian Grubert, Jens Coburg Univ Appl Sci & Arts Coburg Germany Univ Bamberg Bamberg Germany

ISBN: (纸本)9798350328387

While the promise of autonomous vehicles has led to significant scientific and industrial progress, fully automated, SAE level 5 conform cars will likely not see mass adoption anytime soon. Instead, in many applications, human supervision, such as remote monitoring and teleoperation, will be required for the foreseeable future. While Virtual Reality (VR) has been proposed as one potential interface for teleoperation, its benefits and drawbacks over physical monitoring and teleoperation solutions have not been thoroughly investigated. To this end, we contribute three user studies, comparing and quantifying the performance of and subjective feedback for a VR-based system with an existing monitoring and teleoperation system, which is in industrial use today. Through these three user studies, we contribute to a better understanding of future virtual monitoring and teleoperation solutions for autonomous vehicles. The results of our first user study (n=16) indicate that a VR interface replicating the physical interface does not outperform the physical interface. It also quantifies the negative effects that combined monitoring and teleoperating tasks have on users irrespective of the interface being used. The results of the second user study (n=24) indicate that the perceptual and ergonomic issues caused by VR outweigh its benefits, like better concentration through isolation. The third follow-up user study (n=24) specifically targeted the perceptual and ergonomic issues of VR;the subjective feedback of this study indicates that newer-generation VR headsets have the potential to catch up with the current physical displays.

关键词： human-centered computing Virtual Reality Visualization Teleoperation Monitoring Autonomous Vehicles

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Multi -Agent Reinforcement Learning for Visual Comfort Enhancement of Casual Stereoscopic Photography

Multi -Agent Reinforcement Learning for Visual Comfort Enhan...

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30th IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Chen, Yuzhong Shen, Qijin Niu, Yuzhen Liu, Wenxi Fuzhou Univ Coll Comp & Data Sci Fuzhou Peoples R China

ISBN: (纸本)9798350348392

The goal of casual stereoscopic photography is to allow ordinary users to create a stereoscopic photo using two photos taken casually by a monocular camera. In this poster, we propose a multiagent reinforcement learning framework for visual comfort enhancement of casual stereoscopic photography. Each agent calculates a homography matrix based on the positions of four comers before and after the offsets. Furthermore, we propose a hierarchical stereo transformer based on window attention, which enhances and fuses multiscale correlations between left and right views, Experimental results show that our proposed method achieves superior performance to the state-of-the-art methods.

关键词： human-centered computing 3D authoring Image and video acquisition Computer vision

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Leveraging Motion Tracking for Intuitive Interactions in a Tablet-Based 3D Scene Annotation System 22

Leveraging Motion Tracking for Intuitive Interactions in a T...

引用

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

作者： Song, Tianyu Eck, Ulrich Navab, Nassir Tech Univ Munich Munich Germany Johns Hopkins Univ Baltimore MD USA

ISBN: (纸本)9798350328387

In the rapidly evolving field of computer vision, efficient and accurate annotation of 3D scenes plays a crucial role. While automation has streamlined this process, manual intervention is still essential for obtaining precise annotations. Existing annotation tools often lack intuitive interactions and efficient interfaces, particularly when it comes to annotating complex elements such as 3D bounding boxes, 6D human poses, and semantic relationships in a 3D scene. Therefore, it is often time-consuming and error-prone. Emerging technologies such as augmented reality (AR) and virtual reality (VR) have shown potential to provide an immersive and interactive environment for annotators to label objects and their relationships. However, the cost and accessibility of these technologies can be a barrier to their widespread adoption. This work introduces a novel tablet-based system that utilizes built-in motion tracking to facilitate an efficient and intuitive 3D scene annotation process. The system supports a variety of annotation tasks and leverages the tracking and mobility features of the tablet to enhance user interactions. Through a thorough user study investigating three distinct tasks creating bounding boxes, adjusting human poses, and annotating scene relationships - we evaluate the effectiveness and usability of two interaction methods: touch-based interactions and hybrid interactions that utilize both touch and device motion tracking. Our results suggest that leveraging the tablet's motion tracking feature could lead to more intuitive and efficient annotation processes. This work contributes to the understanding of tablet-based interaction and the potential it holds for annotating complex 3D scenes.

关键词： human-centered computing Interaction design Empirical studies in interaction design human-centered computing Interaction design Interaction design process and methods human-centered computing Ubiquitous and mobile computing design and evaluation methods

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