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IEEE International Workshop HAVE Haptic Virtual Environments and Their

17-18 Nov. 2002

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Displaying Results 1 - 21 of 21
  • Proceedings HAVE 2002 - IEEE International Workshop on Haptic Virtual Environments and their Applications (Cat. No.02EX622)

    Publication Year: 2002
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  • Automatic face recognition system architecture for collaborative virtual environments

    Publication Year: 2002, Page(s):1 - 6
    Cited by:  Papers (3)  |  Patents (10)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (508 KB) | HTML iconHTML

    In a collaborative virtual environment (CVE) participants are represented by icons called avatars. In order to correctly assign these avatars, participants must be identified as they enter, leave and navigate within the CVE. We present an approach and systems architecture for the use of automatic face recognition (AFR) to accomplish the task of participant identification. The requirements for AFR ... View full abstract»

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  • Applications of virtual reality in clinical psychology: illustrations with the treatment of anxiety disorders

    Publication Year: 2002, Page(s):7 - 11
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (400 KB) | HTML iconHTML

    The high cost of VR equipment and environments is a significant deterrent to the widespread dissemination of this technology from scientific research labs to the offices of clinical psychologists. An alternative is to use modified 3D games to create new and clinically useful immersive environments on head mounted displays. The aim of this paper is to summarize the first 18 months of work at the Cy... View full abstract»

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  • Matching feature points for telerobotics

    Publication Year: 2002, Page(s):13 - 18
    Cited by:  Papers (5)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (606 KB) | HTML iconHTML

    A system that quickly and reliably matches points from images of the same scene, taken by three different cameras, is presented. The first step consists of weak calibration of the camera system. Feature points are then iteratively selected and matched in the first two images, guided by a fundamental matrix. Each correspondence is then validated by computing the position of matches in the third ima... View full abstract»

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  • Real-time surface reconstruction through HRBF networks

    Publication Year: 2002, Page(s):19 - 24
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (444 KB) | HTML iconHTML

    A procedure for 3D surface reconstruction from range data in strict real-time is presented. The process is based on a connectionist model, the hierarchical radial basis function (HRBF) network, which has been proved to be effective in the reconstruction of smooth, space varying surfaces. An efficient data structure and locality assumptions allowed the derivation of a faster configuration algorithm... View full abstract»

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  • A haptic virtual environment for industrial training

    Publication Year: 2002, Page(s):25 - 30
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (632 KB) | HTML iconHTML

    This paper presents a haptic virtual environment application for industrial training. A choice of haptic devices. (PHANTOM and CyberForce/CyberGrasp) is used to perform a training exercise with the possibility of sharing virtual scene states with remote users to allow collaboration and remote observation. Furthermore, the application employs video textured avatars to improve face-to-face communica... View full abstract»

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  • QoS support of collaborative virtual environments applications in multiservice wireless networks through pricing

    Publication Year: 2002, Page(s):31 - 36
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (529 KB) | HTML iconHTML

    In this paper we discuss the deployment of distributed interactive virtual environment (DIVE) applications over the wireless Internet. Our goal is to understand the behavior of a DIVE application, its interaction with competing traffic streams (video, data, voice, etc.), as well as its network resource requirements for a satisfactory performance in terms of quality of service (QoS). We manage QoS ... View full abstract»

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  • A 6D mouse for virtual environments

    Publication Year: 2002, Page(s):37 - 41
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (328 KB) | HTML iconHTML

    Using new algorithms developed in the field of augmented reality and registration, we investigate further means of extracting three dimensional positioning and orientation information from a device created at Bell Laboratories. We also made modifications to the device in order to adapt it for use in the context of a virtual reality workbench. View full abstract»

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  • An intelligent model approach for combination of sensor information

    Publication Year: 2002, Page(s):43 - 48
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (392 KB) | HTML iconHTML

    Humans gather information from the environment around them using different senses, e.g. sight, hearing, touch, smell and taste. By combining sensory information, we are able to structure decisions and actions when interacting with the environment. Humans are capable of actively using perception capabilities in order to perform objectives in time and space. The objective of this paper is to discuss... View full abstract»

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  • An efficient multi-resolution modeling for 3D objects in applications of virtual environments

    Publication Year: 2002, Page(s):49 - 54
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (460 KB) | HTML iconHTML

    In this paper, we present an efficient progressive mesh algorithm to generate an arbitrary resolution model. In our algorithm, we use the half-edge method for edge collapse. In order to find proper edges for collapse at each iteration, we define a simple and efficient criterion to explore the geometric importance of a 3D object. The factors we consider involve edge curvature and neighbor face area... View full abstract»

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  • Hand-based interaction in augmented reality

    Publication Year: 2002, Page(s):55 - 59
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (409 KB) | HTML iconHTML

    Interaction with virtual objects in an augmented environment enhances the user's interpretation of their presence. An augmented reality (AR) system that uses computer vision for registration can use the same technology for simple gesture recognition. This paper describes hand detection and simple gesture recognition techniques useful in pattern-based AR systems. Pattern-based registration is brief... View full abstract»

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  • Analysis of implementation issues for haptic interfaces using HIL concept

    Publication Year: 2002, Page(s):61 - 65
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (357 KB) | HTML iconHTML

    Haptic interfaces permit adaptation of human operator commands to the mechanical characteristics of the virtual environment. The implementation of a haptic interface is dependent on the dynamics characteristics of the interface components. Implementation issues are analyzed using a hardware-in-the-loop (HIL) experimental facility. Hardware-in-the-loop simulations based on the two-port effort-flow ... View full abstract»

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  • Teleoperation of a mobile robot through haptic feedback

    Publication Year: 2002, Page(s):67 - 72
    Cited by:  Papers (60)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (510 KB) | HTML iconHTML

    Teleoperation systems have been developed in order to allow a human operator to perform complex tasks in remote environments. Mobile robots can be considered as a particular example of telemanipulation systems, since they can be operated remotely to perform particular tasks. As an example, the inspection of underwater structures and the removal of mines are performed by mobile platforms controlled... View full abstract»

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  • Extracting perceptual and motor invariants using eye-tracking technologies in virtual immersions

    Publication Year: 2002, Page(s):73 - 78
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (443 KB) | HTML iconHTML

    From a head-mounted display, head and eye movements were recorded using tracking devices (magnetic and infrared) that render the 6 degrees-of-freedom associated with the position and orientation of head movements, and 2 degrees-of-freedom from one eye. We measured the continuous line of sight's deviation from a pre-selected area on a virtual stimulus. Some analyses of the mathematical properties o... View full abstract»

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  • 3D modeling from range images with integrated registration

    Publication Year: 2002, Page(s):79 - 84
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (591 KB) | HTML iconHTML

    3D modeling of cluttered environments for semi-autonomous robotic systems implies that the position and orientation of the sensor is determined for each viewpoint from which measurements are collected. Often the registration estimation is performed offline or with the help of external tracking devices. In this paper, we propose to integrate an efficient range data-based registration estimation tec... View full abstract»

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  • Autonomous perception systems for dynamic virtual environments

    Publication Year: 2002, Page(s):85 - 90
    Cited by:  Papers (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (667 KB) | HTML iconHTML

    One way of interacting with a virtual environment is through visual perception. This paper presents research work on modeling an artificial vision system for highly mobile autonomous agents that is capable of dynamic obstacle avoidance and active perception. The robust performance of the system is demonstrated in artificial animals with directable, foveated eyes, situated in a physics-based virtua... View full abstract»

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  • Tracking and recognizing people in colour using the earth mover's distance

    Publication Year: 2002, Page(s):91 - 96
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (502 KB) | HTML iconHTML

    This paper proposes a method that tracks and recognizes people in indoor scenes. Background subtraction and foreground silhouette analysis are used to detect people. The colour of each person's clothes is used as a distinguishing feature for the purpose of tracking and recognizing people. Clothing colour is extracted using histograms on a luminance and perceptually uniform chrominance colour space... View full abstract»

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  • Quality of service support of distributed interactive virtual environment applications in IP-Diffserv networks

    Publication Year: 2002, Page(s):97 - 102
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (436 KB) | HTML iconHTML

    With the rapid development of network technology, deployment of distributed interactive virtual environment (DIVE) applications over modern networks is becoming even more popular. However, the best effort model, existing on the Internet, cannot satisfy the QoS requirements of networked DIVE applications. In order to make the Internet quality of service (QoS)-capable, IETF proposed a series of prot... View full abstract»

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  • 6-DOF haptic rendering using geometric algebra

    Publication Year: 2002, Page(s):103 - 107
    Cited by:  Papers (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (518 KB) | HTML iconHTML

    A new six-degree-of-freedom (6-DOF) haptic algorithm that uses geometric algebra for the computations is presented. It takes advantage of the power of this newly discovered branch of mathematics and allows for a force model that is based on a continuous volumetric approach. We show that the graphics model and haptic representation should not be identical, yet should both be based on the same geome... View full abstract»

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  • Tool and object based synchronization in collaborative haptics

    Publication Year: 2002, Page(s):109 - 113
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (484 KB) | HTML iconHTML

    Distributed collaborative virtual environments (CVEs) have traditionally utilized an object-based synchronization model. Avango (Tramberand, http://www.avango.org/paper/paper-final.pdf), for example, implements a distributed shared memory model and synchronizes nodes and fields. Similar models are used by CVEs based on MPEG-4 (Hosseini and Georganas, 2002). We discuss existing object-based synchro... View full abstract»

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  • Tactile display development: the driving-force for tactile sensor development

    Publication Year: 2002, Page(s):115 - 118
    Cited by:  Papers (4)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (433 KB) | HTML iconHTML

    In human communication, entertainment, and "person-in-the-loop" control systems, display development naturally drives sensor development, not the reverse. In contrast, computer automated control systems do not in principle require physical displays, so sensor development can in principle proceed without any corresponding display development. We argue that even if our sensing goal is restricted to ... View full abstract»

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