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检索条件"主题词=Visualization Design and evaluation methods"

共 222 条记录，以下是171-180 订阅

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User evaluation of Group-in-a-box Variants 12

User Evaluation of Group-in-a-box Variants

引用

12th IEEE Pacific visualization Symposium (IEEE PacificVis)

作者： Aoyama, Nozomi Onoue, Yosuke Ueno, Yuki Natsukawa, Hiroaki Koyamada, Koji Kyoto Univ Kyoto Japan Nihon Univ Tokyo Japan Teikoku Databank Ltd Tokyo Japan

ISBN: (纸本)9781538692264

Group-in-a-box (GIB) is a graph-drawing method designed to facilitate the visualization of the group structure of a graph. GIB allows the user to simultaneously view group sizes and inter- and intra-group structures. Several GIB variants have been proposed in the literature;however, their advantages and disadvantages have not been studied from the perspective of human cognition. Therefore, herein, we used eye tracking analysis and user surveys to evaluate the user experience of four GIB variants: Squarified-Treemap GIB(ST-GIB), Croissant-and-Doughnut GIB (CD-GIB), Force-Directed GIB (FD-GIB), and Tree-Reordered GIB (TR-GIB). We found some trade-offs among the methods for each type of user task and that FD-GIB and TR-GIB are superior than the other variants. Although ST-GIB's results were good, links were difficult to read in this graph layout. Eye-tracking data was gathered to determine which elements in each visualization significantly affected user experience. The results of this study will promote the effective use of GIB to analyze networks such as social networks or web graphs.

关键词： Human-centered computing visualization visualization techniques Graph drawings Human-centered computing visualization visualization design and evaluation methods

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Visual Manipulation for Underwater Drag Force Perception in Immersive Virtual Environments 26

Visual Manipulation for Underwater Drag Force Perception in ...

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26th IEEE Conference on Virtual Reality and 3D User Interfaces (VR)

作者： Kang, HyeongYeop Lee, Geonsun Han, JungHyun Korea Univ Comp Sci Dept Seoul South Korea

ISBN: (纸本)9781728113777

In this paper, we propose to reproduce drag forces in a virtual underwater environment. To this end, we first compute the drag forces to be exerted on human limbs in a physically correct way. Adopting a pseudo-haptic approach that generates visual discrepancies between the real and virtual limb motions, we compute the extent of drag forces that are applied to the virtual limbs and can be naturally perceived. Through two tests, our drag force simulation method is compared with others. The results show that our method is effective in reproducing the sense of being immersed in water. Our study can be utilized for various types of virtual underwater applications such as scuba diving training and aquatic therapy.

关键词： Human-centered computing visualization visualization techniques Treemaps Human-centered computing visualization visualization design and evaluation methods

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EngineQV: Investigating External Cause of Engine Failures Based on Geo-temporal Association 12

EngineQV: Investigating External Cause of Engine Failures Ba...

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12th IEEE Pacific visualization Symposium (IEEE PacificVis)

作者： Wang, Yan Chao Zhang, Qian Lin, Feng Seah, Hock Soon Nanyang Technol Univ Rolls Royce NTU Corp Lab Singapore Singapore

ISBN: (纸本)9781538692264

The heart of every vehicle is its engine. Many factors, either internal or external, contribute to the aircraft engine's durability and lifespan. In this paper, we aim to assist the analyst with a qualitative analysis of the possible external cause of engine failures. We work closely with domain experts to study the domain knowledge, analyze challenging tasks, and abstract user requirements. We present EngineQV, a visualization system that integrates multiple geo-temporal engine-associated records. It provides intuitive exploration and understanding of the data from various aspects. The system features a dynamic query on the datasets and incorporates several customized interactive visualizations. A user may query a certain group of engines or compare multiple engine groups, identify an issue, and find its potential causes. The functionality and usability of EngineQV are evaluated by two case studies, through knowledge discovery from records of a single engine and visual comparison of multiple engines. The validity of the system is confirmed by expert feedback.

关键词： Human-centered computing visualization visualization design and evaluation methods Information systems Information systems applications Spatial-temporal systems

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A User Experience Study of Locomotion design in Virtual Reality Between Adult and Minor Users 18

A User Experience Study of Locomotion Design in Virtual Real...

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International Normal Labour and Birth Research Conference

作者： Huang, Zhijiong Zhang, Yu Quigley, Kathryn C. Sankar, Ramya Yang, Allen Y. Univ Calif Berkeley Berkeley CA 94720 USA

ISBN: (纸本)9781728147659

Virtual reality (VR) is an important new technology that is fundamentally changing the way people experience entertainment and education content. Due to the fact that most currently available VR products are one-size-fits-all, the user experience of the content interface and user interaction for children is not well understood compared to that for adults. In this study, we seek to explore user experience of locomotion in VR between healthy adults and healthy minors along both objective and subjective dimensions. We design the experiment where subjects complete a task of moving the body and touching underwater animals using VR controllers. The locomotion in VR is implemented using one of four different modalities, as well as using real-world walking without wearing the VR headset as the baseline. Our results show that physical body movement that mirrors real-world movement exclusively is the least preferred by both adults and minors. However, within the different modalities of controller assisted locomotion, there are variations between adults and minors for preference and challenge levels.

关键词： Human-centered computing visualization visualization techniques Treemaps Human-centered computing visualization visualization design and evaluation methods

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A High-Precision Localization Device for Outdoor Augmented Reality 18

A High-Precision Localization Device for Outdoor Augmented R...

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International Normal Labour and Birth Research Conference

作者： Stranner, Marco Fleck, Philipp Schmalstieg, Dieter Arth, Clemens Graz Univ Technol Graz Austria AR4 GmbH Graz Austria

ISBN: (纸本)9781728147659

In contrast to indoor tracking using computer vision, which has reached a good amount of maturity, outdoor tracking still suffers from comparably poor localization on a global scale. Smartphones and other commodity devices contain consumer-grade sensors for GPS, compass and inertial measurements, which are not accurate enough for augmented reality (AR) in most situations. This restricts what AR can offer to application areas such as surveying or building constructions. We present a self-contained localization device which connects wirelessly to any AR device, such as a smartphone or headset. The device gives centimeter-level accuracy and can be built out of commercial-of-the-shelf components for less than 500 EUR. We demonstrate the performance of the localization device using a variety of position and orientation sensing benchmarks.

关键词： Human-centered computing visualization visualization techniques Treemaps Human-centered computing visualization visualization design and evaluation methods

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Visual Inspection of DBS Efficacy

Visual Inspection of DBS Efficacy

引用

16th IEEE Symposium on visualization for Cyber Security (VizSec) / IEEE visualization Conference (IEEE VIS)

作者： Hollister, Brad F. Duffley, Gordon Butson, Chris Johnson, Chris Rosen, Paul Calif State Univ Dominguez Hills Carson CA 90747 USA Univ Utah Sci Comp & Imaging Inst Salt Lake City UT 84112 USA Univ S Florida Tampa FL 33620 USA

ISBN: (纸本)9781728149417

At present, approximately ten million people worldwide are afflicted by Parkinson's Disease (PD). One of the most promising therapies for PD is Deep Brain Stimulation (DBS). DBS works via stimulation of targeted central brain regions (nuclei), whose dysfunction is implicated in PD. A key problem with DBS is determining optimal parameters for clinical outcome. While multiple parameters may influence outcomes in DBS, we explore spatial correlation of volume of tissue activated (VTA) to Unified Parkinson's Disease Rating Scale (UPDRS) scores. Using the Neurostimulation Uncertainty Viewer (nuView), we investigate a number of cooperative visualizations for DBS inspection. Surface-to-surface Euclidean distance between VTA and selected brain nuclei are used in a linked 3D and parallel coordinates view of patient outcome. We then present a semivariogram-based approach to measure spatial correlation of patient outcomes with VTA. As a third component, nuView provides a unique visualization of an ensemble of electrode placements to reduce clutter and emphasize electrodes with spatially similar VTA. These methods corroborate a spatial aspect to DBS efficacy.

关键词： Human-centered computing visualization visualization design and evaluation methods

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What-Why Analysis of Expert Interviews: Analysing Geographically-Embedded Flow Data 12

What-Why Analysis of Expert Interviews: Analysing Geographic...

引用

12th IEEE Pacific visualization Symposium (IEEE PacificVis)

作者： Yang, Yalong Goodwin, Sarah Monash Univ Caulfield Sch Informat Technol Clayton Vic Australia

ISBN: (纸本)9781538692264

In this paper, we present our analysis of five expert interviews, each from a different application domain. Such analysis is crucial to understanding the real-world scenarios of analysing geographically-embedded flow data. The results of our analysis show that similar high-level tasks were conducted in different domains. To better describe the targets of these tasks, we proposed three flow-targets for analysing geographically-embedded flow data: single flow, total flow and regional flow.

关键词： Human-centered computing visualization visualization design and evaluation methods

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InvisibleRobot: Facilitating Robot Manipulation Through Diminished Reality 18

InvisibleRobot: Facilitating Robot Manipulation Through Dimi...

引用

International Normal Labour and Birth Research Conference

作者： Plopski, Alexander Taylor, Ada V. Carter, Elizabeth Jeanne Admoni, Henny Nara Inst Sci & Technol Ikoma Japan Carnegie Mellon Univ Pittsburgh PA 15213 USA

ISBN: (纸本)9781728147659

When controlling robots, users often face the issue of an operating area that is occluded by an element in the environment or the robot's body. To gain an unobstructed view of the scene, users have to either adjust the pose of the robot or their own viewpoint. This presents a problem, especially for users who rely on assistive robots as they can't easily change their point of view. We introduce InvisibleRobot, a diminished reality-based approach that overlays background information onto the robot in the user's view through an Optical See-Through Head-Mounted Display. We consider two visualization modes for InvisibleRobot: removing the robot body from the user's view entirely, or removing the interior of the robot while maintaining its outline. In a preliminary user study, we compare InvisibleRobot with traditional robot manipulation under different occlusion conditions. Our results suggest that InvisibleRobot can support manipulation in occluded conditions and could be an efficient method to simplify control in assistive robotics.

关键词： Diminished Reality Robot Manipulation Optical See-Through Head-Mounted Display Human-centered computing visualization visualization techniques Treemaps Human-centered computing visualization visualization design and evaluation methods

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Sociotechnical Considerations for Accessible visualization design

Sociotechnical Considerations for Accessible Visualization D...

引用

16th IEEE Symposium on visualization for Cyber Security (VizSec) / IEEE visualization Conference (IEEE VIS)

作者： Lundgard, Alan Lee, Crystal Satyanarayan, Arvind MIT CSAIL Cambridge MA 02139 USA MIT HASTS Cambridge MA 02139 USA

ISBN: (纸本)9781728149417

Accessibility-the process of designing for people with disabilities (PWD)-is an important but under-explored challenge in the visualization research community. Without careful attention, and if PWD are not included as equal participants throughout the process, there is a danger of perpetuating a vision-first approach to accessible design that marginalizes the lived experience of disability (e.g., by creating overly simplistic "sensory translations" that map visual to non-visual modalities in a one-to-one fashion). In this paper, we present a set of sociotechnical considerations for research in accessible visualization design, drawing on literature in disability studies, tactile information systems, and participatory methods. We identify that using state-of-the-art technologies may introduce more barriers to access than they remove, and that expectations of research novelty may not produce outcomes well-aligned with the needs of disability communities. Instead, to promote a more inclusive design process, we emphasize the importance of clearly communicating goals, following existing accessibility guidelines, and treating PWD as equal participants who are compensated for their specialized skills. To illustrate how these considerations can be applied in practice, we discuss a case study of an inclusive design workshop held in collaboration with the Perkins School for the Blind.

关键词： Human-centered computing visualization visualization design and evaluation methods Human-centered computing Accessibility Accessibility technologies

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User Engagement for Collaborative Learning on a Mobile and Desktop Augmented Reality Application 9

User Engagement for Collaborative Learning on a Mobile and D...

引用

International Conference on Virtual Reality and visualization (ICVRV)

作者： Arce-Lopera, Carlos Gomez, Arturo Montoya, Camilo Univ ICESI Fac Engn Cali Colombia

ISBN: (纸本)9781728147529

User engagement and information understanding was assessed for a basic electronics tutorial designed using Augmented Reality (AR). The main idea was to compare user performance in collaborative environments between two different versions of the AR application: a desktop version and a mobile version. Preliminary testing of both versions revealed that users were interested in AR technology but did not intuitively understand how to better utilize the system in comparison with a static video. Moreover, in spite there was not a statistically significant difference between information understanding between both conditions, the mobile application was rated significantly lower than the desktop application in user engagement for collaborative environments.

关键词： Human-centered computing Collaborative and social computing Empirical studies in collaborative and social computing Human-centered computing visualization visualization design and evaluation methods

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