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Spatio-temporal anti-aliasing by the pixel-tracing method

SYSTEMS AND computerS IN JAPAN 1995年第14期26卷 54-66页

作者： Shinya, M Member NTT Human Interface Laboratories Musashino Japan 180 Received his B.E. and M.E. degrees from Waseda University in 1979 and 1981 respectively and his Ph.D. degree later. He joined NTT in 1981. He is presently a Senior Researcher at N I T Human Interface Laboratories. He was a Visiting Researcher at Toronto University. He is engaged in research on computer graphics. He is a member of ACM and the Society of Applied Physics of Japan.

Anti-aliasing is generally an expensive process because either super-sampling or sophisticated rendering is required. This paper presents a new type of antialiasing filter, pixel tracing filler, for animation sequences, which does not require an additional sample or additional calculation in the rendering phase. The filter calculates the correlation among the images using animation information, and sub-pixel information is extracted from the sequence based on the correlation. Theoretical studies prove that the filter becomes an ideal anti-aliasing filter in the limit that the filter size is infinite. The algorithm is simple image processing implemented as post-filtering. The computational cost is independent of the complexity of the scene. Experiments demonstrate the efficiency of the scene. Experiments demonstrate the efficiency of the filter. Almost complete anti-aliasing was achieved at the rate of approximately 30 s per frame for very complex scenes at the resolution of 256 x 256 pixels. The pixel-tracing filter provides effective anti-aliasing for animation sequences at a very modest computational cost.

关键词： computer graphics image synthesis computer animation anti-aliasing spatio-temporal filtering motion blur

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Am I the Odd One? Exploring (In)Congruencies in the Realism of Avatars and Virtual Others in Virtual Reality

arXiv

引用

arXiv 2024年

作者： Mal, David Döllinger, Nina Wolf, Erik Wenninger, Stephan Botsch, Mario Wienrich, Carolin Latoschik, Marc Erich Human-Computer Interaction Group University of Würzburg Würzburg Germany Psychology of Intelligent Interactive Systems Group University of Würzburg Würzburg Germany Human-Computer Interaction Universität Hamburg Hamburg Germany Computer Graphics Group TU Dortmund University Dortmund Germany

Virtual humans play a pivotal role in social virtual environments, shaping users' VR experiences. The diversity in available options and users' individual preferences can result in a heterogeneous mix of appearances among a group of virtual humans. The resulting variety in higher-order anthropomorphic and realistic cues introduces multiple (in)congruencies, eventually impacting the plausibility of the experience. However, related work investigating the effects of being co-located with multiple virtual humans of different appearances remains limited. In this work, we consider the impact of (in)congruencies in the realism of a group of virtual humans, including co-located others (agents) and one's self-representation (self-avatar), on users' individual VR experiences. In a 2×3 mixed design, participants embodied either (1) a personalized realistic or (2) a customized stylized self-avatar across three consecutive VR exposures in which they were accompanied by a group of virtual others being either (1) all realistic, (2) all stylized, or (3) mixed between stylized and realistic. Our results indicate groups of virtual others of higher realism, i.e., potentially more congruent with participants' real-world experiences and expectations, were considered more human-like, increasing the feeling of co-presence and the impression of interaction possibilities. (In)congruencies concerning the homogeneity of the group did not cause considerable effects. Furthermore, our results indicate that a self-avatar's congruence with the participant's real-world experiences concerning their own physical body yielded notable benefits for virtual body ownership and self-identification for realistic personalized avatars. Notably, the incongruence between a stylized self-avatar and a group of realistic virtual others resulted in diminished ratings of self-location and self-identification. This suggests that higher-order (in)congruent visual cues that are not within the ego-central referential fr

关键词： Virtual reality

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A Perfect Storm? Reimagining Work in the Era of the End of the Job

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Ethnographic Praxis in Industry Conference Proceedings 2014年第1期2014卷 3-19页

作者： MELISSA CEFKIN OBINNA ANYA ROBERT MOORE Anthropologist at IBM Research who focuses on work and organization in complex contexts. Postdoctoral researcher at IBM Research – Almaden. Sociologist at IBM Research – Almaden where he examines work practice social interaction and human-computer interaction.

Trends of independent workers, an economy of increasingly automated processes and an ethos of the peer-to-peer “sharing economy” are all coming together to transform work and employment as we know them. Emerging forms of “open” and “crowd” work are particularly keen sites for investigating how the structures and experiences of work, employment and organizations are changing. Drawing on research and design of work in organizational contexts, this paper explores how experiences with open and crowd work systems serve as sites of workplace cultural re-imagining. A marketplace, a crowdwork system and a crowdfunding experiment, all implemented within IBM, are examined as instances of new workplace configurations.

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Visualizing spray paint deposition in VR training

Visualizing spray paint deposition in VR training

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2007 IEEE Virtual Reality Conference, VR'07

作者： Daeseok, Kim Youngwoo, Yoon Sunyu, Hwang Geehyuk, Lee Jinah, Park Information and Communications University Electronics and Telecommunications Research Institute Computer Graphics and Visualization Lab. 119 Munjiro Yuseong-gu Daejeon 305-714 Korea Republic of Human-Computer Interaction Lab. 119 Munjiro Yuseong-gu Daejeon 305-714 Korea Republic of Virtual Reality Research Team 161 Gajeong-dong Yuseong-gu Daejeon 305-700 Korea Republic of

ISBN: (纸本)1424409055

We present a real-time simulation of spray painting incorporated into a VR environment as an alternative training system for ship-building industries. The system allows the user to try out a painting work on life-size structures with a spray gun. Our goal is to provide a trainee realistic painting experience in real-time as well as to represent the thickness of the deposited paint on the surface for evaluation of his performance. The Gaussian model is used for a painting deposition model, and texture mapping technique is utilized to provide efficient visual feedback. We also present effective collision detection methods for a volume of spray paint particles. ©2007 IEEE.

关键词： Interactive computer graphics

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Resize Me! Exploring the User Experience of Embodied Realistic Modulatable Avatars for Body Image Intervention in Virtual Reality

arXiv

引用

arXiv 2022年

作者： Döllinger, Nina Wolf, Erik Mal, David Wenninger, Stephan Botsch, Mario Latoschik, Marc Erich Wienrich, Carolin Human-Technology-Systems Group University of Würzburg Würzburg Germany Human-Computer Interaction Group University of Würzburg Würzburg Germany Computer Graphics Group TU Dortmund University Dortmund Germany

Obesity is a serious disease that can affect both physical and psychological well-being. Due to weight stigmatization, many affected individuals suffer from body image disturbances whereby they perceive their body in a distorted way, evaluate it negatively, or neglect it. Beyond established interventions such as mirror exposure, recent advancements aim to complement body image treatments by the embodiment of visually altered virtual bodies in virtual reality (VR). We present a high-fidelity prototype of an advanced VR system that allows users to embody a rapidly generated personalized, photorealistic avatar and to realistically modulate its body weight in real-time within a carefully designed virtual environment. In a formative multi-method approach, a total of 12 participants rated the general user experience (UX) of our system during body scan and VR experience using semi-structured qualitative interviews and multiple quantitative UX measures. By using body weight modification tasks, we further compared three different interaction methods for real-time body weight modification and measured our system’s impact on the body image relevant measures body awareness and body weight perception. From the feedback received, demonstrating an already solid UX of our overall system and providing constructive input for further improvement, we derived a set of design guidelines to guide future development and evaluation processes of systems supporting body image interventions. © 2022, CC BY.

关键词： Virtual reality

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RAMBO — Robotic Anthropomorphic Manipulator for Bimanual Operations

RAMBO — Robotic Anthropomorphic Manipulator for Bimanual Op...

引用

IEEE International Conference on Autonomous Robot Systems and Competitions (ICARSC)

作者： Nuno Ribeiro Luís Louro Paulo Vicente Pedro Ribeiro Daniel Rodrigues Pedro Dias Emanuel Sousa Sérgio Monteiro Estela Bicho Industrial Electronics Dept ALGORITMI Center University of Minho Guimarães Portugal Center for Computer Graphics Human-Technology Interaction and Robotics Dept University of Minho Guimarães Portugal

ISBN: (数字)9798350352344

ISBN: (纸本)9798350352351

This paper presents the development of an anthropomorphic robot designed for collaborative research alongside the Kuka LBR iiwa R820 robotic arm for the research project I-CATER. The primary objectives were designing a robust and stable robot's structure, integrating hardware using the Robot Operating System (ROS), and developing a user- friendly human-Machine Interface. Priority was set on ensuring the structure could support two robotic arms without compromising stability or functionality. Key components include 7 Degrees of Freedom (DoF) robotic arms, Rg2 grippers, a display and a 2 DoF neck for the vision system support, resembling the human head configuration. Considerations such as size, cost, fabrication techniques, and material availability were taken into account in the structure's design. Integration into a simplified interface allows for easy manipulation without advanced programming knowledge, facilitated by the middleware ROS for modularity and future upgrades. The outcome is RAMBO - a Robotic Anthropomorphic Manipulator for Bimanual Operations - which is a valuable research platform for natural human-robot collaboration.

关键词： Torso Operating systems Machine vision Collaboration Manipulators Solids Stability analysis

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‘It's Not Just about the Patient’: A ‘360° Feedback’ Ethnography of Chronic Care Knowledge Generation

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Ethnographic Praxis in Industry Conference Proceedings 2016年第1期2016卷 328-347页

作者： JYOTIRMAYA MAHAPATRA NIMMI RANGASWAMY SAJAL NAGWANSHI Works in the field of Human Computer Interaction. He currently works as Research Engineer with the focus on User Experience Design of various products. Senior Researcher at the Xerox Research Centre India Bangalore. Xerox Research Centre India Bengaluru

The paper attempts to offer a method to consistently monitor and capture a data eco-system in the everyday of a patient-caregiver relationship. We offer an account of the capture and intermeshing of different types and quality of data sources and their gainful deflection into a methodological protocol for ethnographic engagements. We call this the ‘360° feedback’ ethnography and elaborate its underlying methodological process in this paper. Building on the live feedback obtained from various stakeholder activities in a care ecosystem, we propose how a 360° feedback can enrich regenerative knowledge.

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Debugging lenses: a new class of transparent tools for user interface debugging 97

Debugging lenses: a new class of transparent tools for user ...

引用

Proceedings of the 10th annual ACM symposium on User interface software and technology

作者： Scott E. Hudson Roy Rodenstein Ian Smith Human Computer Interaction Institute Carnegie Mellon University 5000 Forbes Ave. Pittsburgh PA Graphics Visualization and Usability Center College of Computing Georgia Institute of Technology Atlanta GA

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Emotion in HCI - Designing for people 22

Emotion in HCI - Designing for people

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22nd British HCI Group Annual Conference on People and computers: Culture, Creativity, interaction, BCS HCI 2008

作者： Peter, Christian Crane, Elizabeth Fabri, Marc Agius, Harry Axelrod, Lesley Fraunhofer Institute for Computer Graphics Human-Centered Interaction Technologies Germany University of Michigan Division of Kinesiology Ann ArborMI48108 United States Leeds Met University Faculty of Information and Technology LeedsLS6 3QS United Kingdom Brunel University School of Information Systems Computing and Mathematics St John's Middlesex United Kingdom Interact Lab Dept Informatics University of Sussex BrightonBN1 9QH United Kingdom

ISBN: (纸本)9781906124069

As computing is changing and becoming increasingly social in nature, the role of emotions in computing has become ever more relevant and commercial. Emotions are central to culture, creativity, and interaction. The topic attracts more and more researchers from a range of multidisciplinary fields including design, gaming, sensor technologies, psychology and sociology. The need for discussion, exchange of ideas, and interdisciplinary collaboration is ever-increasing as the community grows. This workshop will meet requirements of individuals working in the field, giving them a podium to explore different aspects of emotion in HCI, raise questions and network with like-minded people on common subjects. The workshop will focus around working group sessions, and will use predominantly small group work, rather than being presentation-based. © 2008 The Author Published by the British computer Society.

关键词： human computer interaction

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MIT educators share success

引用

computer graphics (ACM) 2001年第1期35卷 20-23页

作者： Wolfe, Rosalee Belcher, John W. Mark Bessette, R. Massachusetts Institute of Technology Astrophysics Division MIT Physics Department Studio/TEAL Project MIT New England 3D Studio Max Users Group Physics Demonstration Group MIT Department of Physics Center for Space Research Massachusetts Institute of Technology Center for Educational Computing Initiatives Massachusetts Institute of Technology Division of Graphics and Human-Computer Interaction School of Computer Science Telecommunications and Information Systems DePaul University School of Computer Science DePaul University Chicago IL 60604

Professor John Belcher developed a series of short videos with animation and text of selected experiments to properly demonstrate the phenomena of electromagnetism. Such 3D animations are visually compelling, instilling in the student both a sense of wonder about the phenomena and a mental model of why and how it works. The products of these approach includes video clips of demonstrations, 3D animations of these demonstration which display time changing field-lines as a guide to understanding their dynamical effects and Java applets which allow the student to actively construct and animate 2D field lines for varying configurations of sources. These technologies are also implemented to develop animations for Faraday's insights, using video clips.

关键词： computer graphics

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