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检索条件"主题词=Human-centered computing"

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A Data-Centric Methodology and Task Typology for Time-Stamped Event Sequences 9

A Data-Centric Methodology and Task Typology for Time-Stampe...

引用

9th IEEE Evaluation and Beyond - Methodological Approaches for Visualization (BELIV)

作者： Peiris, Yasara Barth, Clara-Maria Huang, Elaine M. Bernard, Juergen Univ Zurich Zurich Switzerland Univ Zurich Digital Soc Initiat Zurich Switzerland

ISBN: (数字)9798350396294

ISBN: (纸本)9798350396294

Task abstractions and taxonomic structures for tasks are useful for designers of interactive data analysis approaches, serving as design targets and evaluation criteria alike. For individual data types, dataset-specific taxonomic structures capture unique data characteristics, while being generalizable across application domains. The creation of dataset-centric but domain-agnostic taxonomic structures is difficult, especially if best practices for a focused data type are still missing, observing experts is not feasible, and means for reflection and generalization are scarce. We discovered this need for methodological support when working with time-stamped event sequences, a datatype that has not yet been fully systematically studied in visualization research. To address this shortcoming, we present a methodology that enables researchers to abstract tasks and build dataset-centric taxonomic structures in five phases (data collection, coding, task categorization, task synthesis, and action-target-(criterion) crosscut). We validate the methodology by applying it to time-stamped event sequences and present a task typology that uses triples as a novel language of description for tasks: (1) action, (2) data target, and (3) data criterion. We further evaluate the descriptive power of the typology with a real-world case on cybersecurity.

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

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My Eyes Hurt: Effects of Jitter in 3D Gaze Tracking

My Eyes Hurt: Effects of Jitter in 3D Gaze Tracking

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

作者： Mughrabi, Moaaz Hudhud Mutasim, Aunnoy K. Stuerzlinger, Wolfgang Batmaz, Anil Ufuk Kadir Has Univ Dept Mechatron Engn Istanbul Turkey Simon Fraser Univ Sch Interact Arts & Technol Burnaby BC V5A 1S6 Canada

ISBN: (纸本)9781665484022

Jitter, small fluctuations in the signal, is one of the major sources for a decrease in motor performance and a negative user experience in virtual reality (VR) systems. Current technologies still cannot eliminate jitter in VR systems, especially in the eye-gaze tracking systems embedded in many head-mounted displays. In this work, we used an HTC Vive Pro Eye, artificially added 0.5 degrees, 1 degrees, and 1.5 degrees jitter to the eye-tracking data, and analyzed user performance in an ISO 9241:411 pointing task with targets at 1 or 2 meters visual distance using angular Fitts' law. The results showed that the user's error rate significantly increases with increased jitter levels. No significant difference was observed for time and throughput. Additionally, we observed a significant decrease in performance in terms of time, error rate, and accuracy for the more distant targets. We hope that our results guide researchers, practitioners, and developers towards better gaze-tracking-based VR applications.

关键词： human-centered computing human computer interaction (HCI) Interaction devices Pointing devices human-centered computing human computer interaction (HCI) Interaction devices Graphics input devices

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Tuning Automatic Summarization for Incident Report Visualization 15

Tuning Automatic Summarization for Incident Report Visualiza...

引用

IEEE 15th Pacific Visualization Symposium (PacificVis)

作者： Danneman, Nathan Gove, Robert Data Machines Corp Ashburn VA 20147 USA Two Six Technol Arlington VA USA

ISBN: (纸本)9781665423359

We present a machine learning approach to improve the accuracy of summarized incident report visualizations for cyber security. We extend a recent incident report summarization method by training a Bayesian hierarchical model to optimize the summarization algorithm's weights. We also train a flat model and a neural network as alternative models to compare against our hierarchical model. Summaries generated by our hierarchical model achieve higher accuracy than the other methods, with an AUC 0.2 higher than the unweighted method while achieving comparable summarization size. We further demonstrate that visualizations of the hierarchical model's summaries are at least as useful the unweighted method's summaries, and possibly more useful.

关键词： human-centered computing Visualization Visualization application domains Information visualization Security and privacy Usability in security and privacy Security and privacy Intrusion/anomaly detection and malware mitigation

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Augmenting Feature Importance Analysis: How Color and Size Can Affect Context-Aware AR Explanation Visualizations? 21

Augmenting Feature Importance Analysis: How Color and Size C...

引用

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

作者： Zheng, Mengya Thomas, Rosemary J. Pan, Xingyu Xu, Zixiang Liang, Yuan Campbell, Abraham G. Univ Coll Dublin Sch Comp Sci Dublin Ireland

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

Augmented Reality (AR) has shown significant potential in supporting in-situ decision-making in various application areas. Many prior works have shown how AR can visualize the decision support data in various contexts. However, prior research about AR-based decision support systems rarely explored how the explanations were visualized. Providing context-aware explanations within AR-based recommendation systems may help users instantly understand the recommendations they have been given. Therefore, this paper presents the world-first user study exploring AR explanation visualization designs. Three feature importance analysis visualizations that apply different color-coding and size-scaling strategies were designed to explain the recommendations provided by a context-aware AR shopping assistant system. Twenty-four participants were recruited to evaluate these three explanations in a shopping scenario. The results revealed novel findings that could help guide the appropriate utilization of descriptive parameters when designing AR explanation artifacts. The results also show the potential of providing intuitive visualization to explain recommendations in AR.

关键词： human-centered computing Visualization Empirical studies in Visualization human-centered computing human computer interaction Empirical studies in HCI

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Virtual human Coherence and Plausibility - Towards a Validated Scale

Virtual Human Coherence and Plausibility - Towards a Validat...

引用

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

作者： Mal, David Wolf, Erik Doellinger, Nina Botsch, Mario Wienrich, Carolin Latoschik, Marc Erich Univ Wurzburg HCI Grp Wurzburg Germany Univ Wurzburg HTS Grp Wurzburg Germany TU Dortmund Univ Comp Graph Grp Dortmund Germany

ISBN: (纸本)9781665484022

Virtual humans contribute to users' state of plausibility in various XR applications. We present the development and preliminary evaluation of a self-assessment questionnaire to quantify virtual human's plausibility in virtual environments based on eleven concise items. A principal component analysis of 650 appraisals collected in an online survey revealed two highly reliable components within the items. We interpret the components as possible factors, i.e., appearance and behavior plausibility and match to the virtual environment, and propose future work aiming towards a standardized virtual human plausibility scale by validating the structure and sensitivity of both sub-components in XR environments.

关键词： human-centered computing HCI theory, concepts and models HCI design and evaluation methods

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Feasibility of Training Elite Athletes for Improving their Mental Imagery Ability Using Virtual Reality

Feasibility of Training Elite Athletes for Improving their M...

引用

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

作者： Wu, Yuanjie Lukosch, Stephan Lukosch, Heide Lindeman, Robert W. McKee, Ryan Douglas Fukuden, Shunsuke Ross, Cameron Collins, Dave Univ Canterbury HIT Lab NZ Christchurch New Zealand High Performance Sport Christchurch New Zealand

ISBN: (纸本)9781665484022

The goal of imagery training for athletes is to create realistic images in their minds and to familiarize them with certain procedures, environments, and other aspects related to competition. Traditional imagery training methods use still images or videos, and athletes study the pictures or watch the videos in order to mentally rehearse. However, factors such as distractions and low realism can affect the training quality. In this paper, we present a VR solution and a study that explores our hypotheses that 1) high-fidelity VR systems improve mental imagery skills, and that 2) the presence of elements such as an audience or photographers in the VR environment result in better mental imagery skill improvement.

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

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ARTFM: Augmented Reality Visualization of Tool Functionality Manuals in Operating Rooms

ARTFM: Augmented Reality Visualization of Tool Functionality...

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

作者： Kleinbeck, Constantin Schieber, Hannah Andress, Sebastian Krautz, Christian Roth, Daniel Friedrich Alexander Univ Erlangen Nurnberg Human Ctr Comp & Extended Real Erlangen Germany Ludwig Maximilians Univ Munchen Klin Allgemeine Unfall & Wiederherstellungschirur Munich Germany Friedrich Alexander Univ Erlangen Nurnberg Univ Klinikum Erlangen Erlangen Germany

ISBN: (纸本)9781665484022

Error-free surgical procedures are crucial for a patient's health. However, with the increasing complexity and variety of surgical instruments, it is difficult for clinical staff to acquire detailed assembly and usage knowledge leading to errors in process and preparation steps. Yet, the gold standard in retrieving necessary information when problems occur is to get the paper-based manual. Reading through the necessary instructions is time-consuming and decreases care quality. We propose ARTFM, a process integrated manual, highlighting the correct parts needed, their location, and step-by-step instructions to combine the instrument using an augmented reality head-mounted display.

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

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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...

引用

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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The Smell Engine: A system for artificial odor synthesis in virtual environments 29

The Smell Engine: A system for artificial odor synthesis in ...

引用

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

作者： Bahremand, Alireza Manetta, Mason Lai, Jessica Lahey, Byron Spackman, Christy Smith, Brian H. Gerkin, Richard C. LiKamWa, Robert Arizona State Univ Tempe AZ 85287 USA

ISBN: (纸本)9781665496179

Mimicking physical odor sensations virtually can present users with a real-time odor synthesis that approximates what users would smell in a virtual environment, e.g., as they walk around in virtual reality. To this end, we devise a Smell Engine that includes: (i) a Smell Composer framework that allows developers to configure odor sources in virtual space, (ii) a Smell Mixer that dynamically estimates the odor mix that the user would smell, based on diffusion models and relative odor source distances, and (iii) a Smell Controller that coordinates an olfactometer to physically present an approximation of the odor mix to the user's mask from a set of odorants channeled through controllable flow valves. Through a three-part user study, we found that the Smell Engine can help measure a subject's olfactory detection threshold and improve their ability to precisely localize odors in the virtual environment, as compared to existing trigger-based solutions.

关键词： human-centered computing Interactive systems and tools Computer systems organization Sensors and actuators

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BuildAR: A Proof-of-Concept Prototype of Intelligent Augmented Reality in Construction

BuildAR: A Proof-of-Concept Prototype of Intelligent Augment...

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

作者： Bowman, Doug A. Gabbard, Joseph Auerbach, Daniel Roofigari-Esfahan, Nazila Britt, Kathryn Ilo, Cory I. Adapa, Keerthana Virginia Tech Ctr Human Comp Interact Blacksburg VA 24061 USA

ISBN: (纸本)9781665484022

Augmented Reality (AR) holds great potential to support the productivity, safety, and decision making of construction workers. We propose that AR in construction needs intelligent sensing, understanding, and adaptation based on context: information about the worker, their work/tasks, and the surrounding environment. As a proof-of-concept of intelligent AR, we present the design of the BuildAR prototype, which illustrates how a context-aware AR system might support an assembly task conducted by steel workers.

关键词： human-centered computing human-Computer Interaction (HCI) Interaction Paradigms Mixed/Augmented Reality

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