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检索条件"主题词=Human-centered computing"

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FLAD: A human-centered Video Content Flaw Detection System for Meeting Recordings 32

FLAD: A Human-centered Video Content Flaw Detection System f...

引用

32nd Workshop on Network and Operating Systems Support for Digital Audio and Video (NOSSDAV) Part of MMSys Conference

作者： Duan, Haihan Liao, Junhua Lin, Lehao Cai, Wei Chinese Univ Hong Kong Shenzhen Peoples R China Sichuan Univ Chengdu Peoples R China

ISBN: (纸本)9781450393836

Widely adopted digital cameras and smartphones have generated a large number of videos, which have brought a tremendousworkload to video editors. Recently, a variety of automatic/semi-automatic video editing methods have been proposed to tackle this issue in some specific areas. However, for the production of meeting recordings, the existing studies highly depend on additional conditions of conference venues, like infrared camera or special microphone, which are not practical. Moreover, current video quality assessment works mainly focus on the quality loss after compression or encoding rather than the human-centered video content flaws. In this paper, we design and implement FLAD, a human-centered video content flaw detection system for meeting recordings, which could build a bridge between subjective sense and objective measures from a human-centered perspective. The experimental results illustrate the proposed algorithms could achieve the state-of-the-art video content flaw detection performance for meeting recordings.

关键词： Video Editing Meeting Recordings human-centered computing Video Quality Assessment

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Enhancing the Sense of Agency by Transitional Weight Control in Virtual Co-Embodiment 21

Enhancing the Sense of Agency by Transitional Weight Control...

引用

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

作者： Kodama, Daiki Mizuho, Takato Hatada, Yuji Narumi, Takuji Hirose, Michitaka Univ Tokyo Tokyo Japan

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

Virtual reality helps us learn complex motor skills by providing a situation in which we observe or follow a teacher's movements from a first-person perspective. However, it has been suggested that if the learners themselves do not behave actively, their body schemes will not be updated and motor skills will be acquired temporarily, but will not be retained in the long term. As a solution to this problem, "co-embodiment" in which two people embody an avatar that reflects the weighted average of their movements was proposed, and it is shown that the user can feel an excessive sense of agency (SoA) even when their control weight is small. From the perspective of motor skill learning, the learner must feel as strong a SoA as possible while performing the exercise as close to the teacher as possible. Therefore, in this study, we propose a method to transitionally change the weights in a situation where co-embodiment is used, such that a strong SoA is felt despite the high weights of control by others. Considering the two-step account of the agency model, which states that the SoA is influenced by context, we tested the hypothesis that an initially strong SoA can maintain the SoA despite a gradually decreased control weight. The experimental results support this hypothesis, and it is expected that the proposed method will enhance the effectiveness of motor skill learning using co-embodiment.

关键词： human-centered computing human computer interaction (HCI) HCI design and evaluation methods Laboratory experiments

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KARLI: Kid-friendly Augmented Reality for Primary School Health Education

KARLI: Kid-friendly Augmented Reality for Primary School Hea...

引用

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

作者： Seel, Mariella Andorfer, Michael Heller, Mario Jakl, Andreas Univ Appl Sci St Polten Inst Creat Media Technol St Polten Austria

ISBN: (纸本)9781665484022

Acquiring health knowledge is essential and starts already in primary school. Augmented Reality (AR) helps to convey complex topics in a more understandable way. In this paper, we present the prototype of KARLI, the "Kid-friendly Augmented Reality Learning Interface". This AR smartphone app for in-school use is designed for age level 8 to 10, enabling pupils to explore a 3D model of the human body based on the primary school curriculum. Underlining the importance of kid-friendly app development and testing, our evaluation results of 38 pupils and 3 teachers indicate that KARLI is suitable and helpful for health education in primary schools.

关键词： human-centered computing Mixed / augmented reality human-centered computing Usability testing Applied computing Education Collaborative learning Social and professional topics User characteristics Age Children

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Position Paper: Are We Making Progress In Visualization Research? 9

Position Paper: Are We Making Progress In Visualization Rese...

引用

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

作者： Correll, Michael Tableau Res Amherst MA 02459 USA

ISBN: (数字)9798350396294

ISBN: (纸本)9798350396294

In this work I use a survey of senior visualization researchers and thinkers to ideate about the notion of progress in visualization research: how are we growing as a field, what are we building towards, and are our existing methods sufficient to get us there? My respondents discussed several potential challenges for visualization research in terms of knowledge formation: a lack of rigor in the methods used, a lack of applicability to actual communities of practice, and a lack of theoretical structures that incorporate everything that happens to people and to data both before and after the few seconds when a viewer looks at a value in a chart. Orienting the field around progress (if such a thing is even desirable, which is another point of contention) I believe will require drastic re-conceptions of what the field is, what it values, and how it is taught.

关键词： human-centered computing Visualization Visualization theory, concepts and paradigms human-centered computing Visualization Visualization design and evaluation methods

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Exploring and Selecting Supershapes in Virtual Reality with Line, Quad, and Cube Shaped Widgets 29

Exploring and Selecting Supershapes in Virtual Reality with ...

引用

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

作者： Nicolau, Francisco Gielis, Johan Simeone, Adalberto L. Lopes, Daniel Simoes Univ Lisbon Inst Super Tecn Lisbon Portugal Univ Antwerp Dept Biosci Engn Antwerp Belgium Katholieke Univ Leuven Dept Comp Sci Leuven Belgium Univ Lisbon Inst Super Tecn INESC ID Lisbon Portugal

ISBN: (纸本)9781665496179

Supershapes are used in Parametric Design to model, literally, thousands of natural and man-made shapes with a single 6 parameter formula. However, users are left to probe such a rich yet dense collection of supershapes using a set of independent 1-D sliders. Some of the formula's parameters are non-linear in nature, making them particularly difficult to grasp with conventional 1-D sliders alone. VR appears as a promising setting for Parametric Design with supershapes since it empowers users with more natural visual inspection and shape browsing techniques, with multiple solutions being displayed at once and the possibility to design more interesting forms of slider interaction. In this work, we propose VR shape widgets that allow users to probe and select supershapes from a multitude of solutions. Our designs take leverage on thumbnails, mini-maps, haptic feedback and spatial interaction, while supporting 1-D, 2-D and 3-D supershape parameter spaces. We conducted a user study (N = 18) and found that VR shape widgets are effective, more efficient, and natural than conventional VR 1-D sliders while also usable for users without prior knowledge on supershapes. We also found that the proposed VR widgets provide a quick overview of the main supershapes, and users can easily reach the desired solution without having to perform fine-grain handle manipulations.

关键词： human-centered computing User interface design human-centered computing Virtual reality human-centered computing Graphical user interfaces

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Does Remote Expert Representation really matters: A comparison of Video and AR-based Guidance

Does Remote Expert Representation really matters: A comparis...

引用

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

作者： Marques, Bernardo Silva, Samuel Dias, Paulo Santos, Beatriz Sousa Univ Aveiro DETI IEETA Aveiro Portugal

ISBN: (纸本)9781665484022

This work describes a user study aimed at understanding how the remote expert representation affects the sense of social presence in scenarios of remote guidance. We compared a traditional video chat solution with an Augmented Reality (AR) annotation tool. These were selected due to ongoing research with partners from the industry sector, following the insights of a participatory design process. A well defined -problem was used, i.e., a synchronous maintenance task with 4 completion stages that required a remote expert using a computer to guide 26 on -site participants wielding a handheld device. The results of the study are described and discussed.

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 Evalution Methods User Studies

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SkiSim: A comprehensive Study on Full Body Motion Capture and Real-Time Feedback in VR Ski Training 22

SkiSim: A comprehensive Study on Full Body Motion Capture an...

引用

Augmented humans Conference (AHs)

作者： Hoffard, Jana Zhang, Xuan Wu, Erwin Nakamura, Takuto Koike, Hideki Tokyo Inst Technol Tokyo Japan

ISBN: (纸本)9781450396325

Ski Training has many restrictions, such as environmental requirements and the constraint for indirect cyclic feedback given by coaches. Though, several researcher introduced different systems in order to overcome these limitations, there is no comprehensive study on which body parts trainees concentrate on the most and which feedback is suited for an intuitive training of the skier. We therefore conducted two user studies to determine which body parts the user concentrates on while using a ski simulator and whether or not a more informative non-visual feedback on said body parts can compete to the state of the art visual feedback.

关键词： human-centered computing human Computer Interaction (HCI) HCI design and evaluation methods Virtual Reality

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VTONShoes: Virtual Try-on of Shoes in Augmented Reality on a Mobile Device 21

VTONShoes: Virtual Try-on of Shoes in Augmented Reality on a...

引用

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

作者： Song, Wenshuang Gong, Yanhe Wang, Yongcai Renmin Univ China Sch Informat Beijing Peoples R China Baidu ART Beijing Peoples R China Renmin Univ China Metaverse Res Ctr Beijing Peoples R China

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

The virtual try-on (VTON) system in augmented reality (AR) has attracted significant research interest. This paper presents a novel real-time AR virtual shoe try-on system (VTONShoes). Users can see the virtual shoes with full degrees of freedom on the mobile device. In particular, we propose an efficient framework to detect, classify, and recover 6-DoF pose of shoes from the captured images and then accurately render the 3D shoe model on the screen in real-time and in full degrees of freedom. For accurate pose recovery, dense keypoints are designed on the 3D shoe model. An efficient joint 2D keypoint localization and leg silhouette segmentation module (KeyPointLoc) is designed to predict keypoint projections on 2D images and the shoe-leg occlusion relationship. In order to reduce jitter between frames, an optimization-based framework with the longest continuous invariant subarray constraints is proposed to minimize classification errors caused by model switching, and a smoothing module with Exponential Weights Decay is presented to post-process the rendered results. We also developed a large-scale dataset named Diverse-Shoes which contains images extracted from 80K videos, annotated with the shoe bounding box, transformation matrices, and silhouettes of legs. Our system has achieved a smooth and stable try-on effect on mainstream devices with a real-time speed of around 25 to 45 FPS on mainstream mobile phones, which significantly outperforms state-of-the-art methods for real-time performance and rendering accuracy.

关键词： human-centered computing Mixed/augmented reality 6-DoF pose estimation Virtual try-on

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How Do We Measure Trust in Visual Data Communication? 9

How Do We Measure Trust in Visual Data Communication?

引用

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

作者： Elhamdadi, Hamza Gaba, Aimen Kim, Yea-Seul Xiong, Cindy UMass Amherst Amherst MA 01003 USA Univ Wisconsin Madison WI USA

ISBN: (数字)9798350396294

ISBN: (纸本)9798350396294

Trust is fundamental to effective visual data communication between the visualization designer and the reader. Although personal experience and preference influence readers' trust in visualizations, visualization designers can leverage design techniques to create visualizations that evoke a "calibrated trust," at which readers arrive after critically evaluating the information presented. To systematically understand what drives readers to engage in "calibrated trust," we must first equip ourselves with reliable and valid methods for measuring trust. Computer science and data visualization researchers have not yet reached a consensus on a trust definition or metric, which are essential to building a comprehensive trust model in human-data interaction. On the other hand, social scientists and behavioral economists have developed and perfected metrics that can measure generalized and interpersonal trust, which the visualization community can reference, modify, and adapt for our needs. In this paper, we gather existing methods for evaluating trust from other disciplines and discuss how we might use them to measure, define, and model trust in data visualization research. Specifically, we discuss quantitative surveys from social sciences, trust games from behavioral economics, measuring trust through measuring belief updating, and measuring trust through perceptual methods. We assess the potential issues with these methods and consider how we can systematically apply them to visualization research.

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

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Continuous Transformation Superposition for Visual Comfort Enhancement of Casual Stereoscopic Photography 29

Continuous Transformation Superposition for Visual Comfort E...

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IEEE Conference on 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)9781665496179

Casual stereoscopic photography allows ordinary users to create a stereoscopic photo using two photos taken casually by a monocular camera. The visual comfort of a casual stereoscopic photo can greatly affect its visual experience. In this paper, we present a novel visual comfort enhancement method for casual stereoscopic photography via reinforcement learning based on continuous transformation superposition. We consider the transformation, in a continuous transformation space, to transform each view as superpositions of several basic continuous transformations, enabling more subtle and flexible image transformation operations to approach better solutions. To achieve the continuous transformation superposition, we prepare a collection of continuous transformation models for translation, rotation, and perspective transformations. Then we train a policy model to determine an optimal transformation chain to recurrently handle both the geometric constraints and disparity adjustment, and thereby enhance the visual comfort of casual stereoscopic images. We further propose an attention-based stereo feature fusion module that enhances and integrates the binocular information between the left and right views. Experimental results on three datasets demonstrate that our proposed method achieves superior performance to state-of-the-art methods.

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

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