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Author: Anatole Lecuyer
Publisher:
ISBN:
Category :
Languages : en
Pages : 6
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Book Description
This paper presents a set of experiments in which a human user feels haptic sensations. These sensations are in fact haptic illusions generated by a visual effect. Then these haptic illusions are described and analysed. These haptic illusions were generated by the use of a pseudo-haptic feedback system. It is a system combining an isometric input device and visual feedback. The experimental apparatus did not use any force feedback interlace The paper addresses the role of action in the perception loop subjects felt a reactive force corresponding to their own sensory-motor command. In addition subjects had to "participate" in the illusion process by choosing the cognitive strategy which led to the illusion. In the future, the use of the concept of illusion might improve or simplify VR simulations and pave the way to a better understanding of human perception.
Author: Anatole Lecuyer
Publisher:
ISBN:
Category :
Languages : en
Pages : 6
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Book Description
This paper presents a set of experiments in which a human user feels haptic sensations. These sensations are in fact haptic illusions generated by a visual effect. Then these haptic illusions are described and analysed. These haptic illusions were generated by the use of a pseudo-haptic feedback system. It is a system combining an isometric input device and visual feedback. The experimental apparatus did not use any force feedback interlace The paper addresses the role of action in the perception loop subjects felt a reactive force corresponding to their own sensory-motor command. In addition subjects had to "participate" in the illusion process by choosing the cognitive strategy which led to the illusion. In the future, the use of the concept of illusion might improve or simplify VR simulations and pave the way to a better understanding of human perception.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 78
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Book Description
Advances in graphic display technologies have made virtual reality (VR) and scientific visualization applications accessible to a wide user population. Unfortunately, few human interface tools exist to allow users to interact naturally with these powerful graphical environments. To address this need, Immersion Corporation has developed a user interface mechanism to allow natural manual interaction with 3-D environments which provides realistic force feedback to the user. This haphic display methodology combines high fidelity, low cost, and inherent safety to allow force reflection technology to become commercially feasible. The long term objective is to produce a 3-D haptic interface for virtual environments. Phase 1 focused on producing one-dimensional haptic interface hardware and incorporating this technology into a real world VR application. Immersion and the Ohio Supercomputer Center have worked together to produce a virtual simulation of epidural analgesia, a medical procedure that requires delicate needle insertions into the spinal column. The resulting VR simulation is so realistic in look and feel, it can actually be used as a training environment to teach doctors to perform the dexterous manual procedure, allowing them to learn manual technique and explore the associated physical sensations without the risks or costs associated with using real biological specimens. (AN).
Author: Iman Shafieloo
Publisher:
ISBN:
Category : Control theory
Languages : en
Pages : 0
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Book Description
Stability is a critical issue in haptic simulation. Unlike other conventional robotic manipulators, haptic devices inherently function in close proximity to humans. The unpredictable nature of human operator and the virtual environment are the main sources of instability in a stand alone haptic system. In the case of teleoperative haptic systems the criteria for stability is far more complicated than those studied for single-user systems. Stability and traceability in telehaptic systems are some of the main technical challenges in the field of shared virtual environments. The methods proposed in this thesis provide accurate 3D force reflecting telehaptic model to guarantee a stable teleoperation in a virtual environment that minimizes the tracking errors between the master and slave haptic devices. A control strategy is developed and investigated for maintaining and improving on the stability margins and achievable performances for telehaptic system as a training tool intended for bilateral interaction with virtual objects. Specifically a recursive adaptive method is developed and applied in order to minimize the tracking error between the master and slave haptic devices. A detailed comparative evaluation of the proposed control and estimation strategies is presented to illustrate the performance of the resulting controlled telehaptic system. The research presented here is based on an implementation environment consisting of master and slave haptic devices operating on a single workstation, which implies that improving the system response and performance in a network environment remains as another challenge and future work. The development of higher quality graphics accelerators, processors, high speed networks and data communications, specific protocols for 3D graphics and haptics world, specific real time algorithms and even the development of 3D modeling languages affect this next generation technology.
Author: Malika Auvray
Publisher: Springer
ISBN: 3662441934
Category : Computers
Languages : en
Pages : 585
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Book Description
The two-volume set LNCS 8618 and 8619 constitutes the refereed proceedings of the 9th International Conference EuroHaptics 2014, held in Versailles, France, in June 2014. The 118 papers (36 oral presentations and 82 poster presentations) presented were carefully reviewed and selected from 183 submissions. Furthermore, 27 demos were exhibited, each of them resulting in a short paper included in the volumes. These proceedings reflect the multidisciplinary nature of EuroHaptics and cover topics such as human-computer interaction, human-robot interactions, neuroscience, perception and psychophysics, biomechanics and motor control, modelling and simulation; and a broad range of applications in medicine, rehabilitation, art, and design.
Author: Margaret L. McLaughlin
Publisher: Prentice Hall PTR
ISBN:
Category : Computers
Languages : en
Pages : 314
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Book Description
Haptics: The state-of-the-art in building touch-based interfaces for virtual environments. -- Key research issues: model acquisition, contact detection, force feedback, compression, capture, and collaboration. -- Understanding the role of human factors in haptic interfaces. -- Applications: medical training, telesurgery, biological and scientific interfaces, military applications, sign language, museum display, and more. Haptics -- "touch-based" interface design -- is the exciting new frontier in research on virtual and immersive environments. In Touch in Virtual Environments, the field's leading researchers bring together their most advanced work and applications. They identify the key challenges facing haptic interface developers, present today's best solutions, and outline a clear research agenda for the future. This book draws upon work first presented at the breakthrough haptics conference held recently at USC's Integrated Media Systems Center. The editors and contributors begins by reviewing key haptics applications and the challenges of effective haptic rendering, presenting new insights into model acquisition, contact detection, force feedback, compression, capture, collaboration, and other key issues. Next, they focus on the complex human factors associated with successful haptic interfaces, examining questions such as: How can we make haptic displays more usable for blind and visually impaired users? What are the differences between perceiving texture with the bare skin and with a probe? In the book's final section, several of today's leading haptic applications are introduced, including telesurgery and surgical simulation; scientific visualization.
Author: Gianni Campion
Publisher: Springer Science & Business Media
ISBN: 0857295764
Category : Computers
Languages : en
Pages : 170
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Book Description
The sense of touch is fundamental during the interaction between humans and their environment; in virtual reality, objects are created by computer simulations and they can be experienced through haptic devices. In this context haptic textures are fundamental for a realistic haptic perception of virtual objects. This book formalizes the specific artefacts corrupting the rendering of virtual haptic textures and offers a set of simple conditions to guide haptic researchers towards artefact-free textures. The conditions identified are also extremely valuable when designing psychophysical experiments and when analyzing the significance of the data collected. The Synthesis of Three Dimensional Haptic Textures, Geometry, Control, and Psychophysics examines the problem of rendering virtual haptic textures with force feedback devices. The author provides an introduction to the topic of haptic textures that covers the basics of the physiology of the skin, the psychophysics of roughness perception, and the engineering challenges behind haptic textures rendering. The book continues with the presentation of a novel mathematical framework that characterizes haptic devices, texturing algorithms and their ability to generate realistic haptic textures. Finally, two psychophysical experiments link the perception of roughness with the parameters of the haptic rendering algorithms. This book formalizes the specific artefacts corrupting the rendering of virtual haptic textures and offers a set of simple conditions to guide haptic researchers towards artefact-free textures. The conditions identified are also extremely valuable when designing psychophysical experiments and when analyzing the significance of the data collected.
Author: Jessie Y. C. Chen
Publisher: Springer Nature
ISBN: 3030775992
Category : Computers
Languages : en
Pages : 715
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Book Description
This book constitutes the refereed proceedings of the 13th International Conference on Virtual, Augmented and Mixed Reality, VAMR 2021, held virtually as part of the 23rd HCI International Conference, HCII 2021, in July 2021. The total of 1276 papers and 241 posters included in the 39 HCII 2021 proceedings volumes was carefully reviewed and selected from 5222 submissions. The 47 papers included in this volume were organized in topical sections as follows: designing and evaluating VAMR environments; multimodal and natural interaction in VAMR; head-mounted displays and VR glasses; VAMR applications in design, the industry and the military; and VAMR in learning and culture.
Author: Guido Böttcher
Publisher: Springer Science & Business Media
ISBN: 0857299352
Category : Computers
Languages : en
Pages : 148
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Book Description
The focus from most Virtual Reality (VR) systems lies mainly on the visual immersion of the user. But the emphasis only on the visual perception is insufficient for some applications as the user is limited in his interactions within the VR. Therefore the textbook presents the principles and theoretical background to develop a VR system that is able to create a link between physical simulations and haptic rendering which requires update rates of 1\,kHz for the force feedback. Special attention is given to the modeling and computation of contact forces in a two-finger grasp of textiles. Addressing further the perception of small scale surface properties like roughness, novel algorithms are presented that are not only able to consider the highly dynamic behaviour of textiles but also capable of computing the small forces needed for the tactile rendering at the contact point. Final analysis of the entire VR system is being made showing the problems and the solutions found in the work
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309051355
Category : Computers
Languages : en
Pages : 557
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Book Description
Despite widespread interest in virtual reality, research and development efforts in synthetic environments (SE)â€"the field encompassing virtual environments, teleoperation, and hybridsâ€"have remained fragmented. Virtual Reality is the first integrated treatment of the topic, presenting current knowledge along with thought-provoking vignettes about a future where SE is commonplace. This volume discusses all aspects of creating a system that will allow human operators to see, hear, smell, taste, move about, give commands, respond to conditions, and manipulate objects effectively in a real or virtual environment. The committee of computer scientists, engineers, and psychologists on the leading edge of SE development explores the potential applications of SE in the areas of manufacturing, medicine, education, training, scientific visualization, and teleoperation in hazardous environments. The committee also offers recommendations for development of improved SE technology, needed studies of human behavior and evaluation of SE systems, and government policy and infrastructure.
Author: Lynette Jones
Publisher: MIT Press
ISBN: 0262349078
Category : Computers
Languages : en
Pages : 194
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Book Description
An accessible, nontechnical overview of active touch sensing, from sensory receptors in the skin to tactile surfaces on flat screen displays. Haptics, or haptic sensing, refers to the ability to identify and perceive objects through touch. This is active touch, involving exploration of an object with the hand rather than the passive sensing of a vibration or force on the skin. The development of new technologies, including prosthetic hands and tactile surfaces for flat screen displays, depends on our knowledge of haptics. In this volume in the MIT Press Essential Knowledge series, Lynette Jones offers an accessible overview of haptics, or active touch sensing, and its applications. Jones explains that haptics involves integrating information from touch and kinesthesia—that is, information both from sensors in the skin and from sensors in muscles, tendons, and joints. The challenge for technology is to reproduce in a virtual world some of the sensations associated with physical interactions with the environment. Jones maps the building blocks of the tactile system, the receptors in the skin and the skin itself, and how information is processed at this interface with the external world. She describes haptic perception, the processing of haptic information in the brain; haptic illusions, or distorted perceptions of objects and the body itself; tactile and haptic displays, from braille to robotic systems; tactile compensation for other sensory impairments; surface haptics, which creates virtual haptic effects on physical surfaces such as touch screens; and the development of robotic and prosthetic hands that mimic the properties of human hands.
