Computer Animation and Virtual Worlds

Cover image for Vol. 24 Issue 2

March/April 2013

Volume 24, Issue 2

Pages i–ii, 85–153

  1. Issue Information

    1. Top of page
    2. Issue Information
    3. Editorial
    4. Special Issue Paper
    5. Research Articles
    1. ISSUE INFORMATION (pages i–ii)

      Article first published online: 17 APR 2013 | DOI: 10.1002/cav.1480

  2. Editorial

    1. Top of page
    2. Issue Information
    3. Editorial
    4. Special Issue Paper
    5. Research Articles
    1. Editorial Issue 24.2 (page 85)

      Nadia Magnenat-Thalmann and Daniel Thalmann

      Article first published online: 17 APR 2013 | DOI: 10.1002/cav.1496

  3. Special Issue Paper

    1. Top of page
    2. Issue Information
    3. Editorial
    4. Special Issue Paper
    5. Research Articles
    1. Real-time horse gait synthesis (pages 87–95)

      Ting-Chieh Huang, Yi-Jheng Huang and Wen-Chieh Lin

      Article first published online: 12 JUN 2012 | DOI: 10.1002/cav.1469

      Thumbnail image of graphical abstract

      We present a horse locomotion synthesis approach that can automatically adjust a horse's motion in real time based on the moving speed and direction specified by a user. In particular, we propose an asynchronous time warping approach to handle gait transition, which is critical for generating realistic and controllable horse locomotion because it exhibits rich gait variations. Our experiments demonstrate that our system can produce smooth, rich, and controllable horse locomotion in real time.

  4. Research Articles

    1. Top of page
    2. Issue Information
    3. Editorial
    4. Special Issue Paper
    5. Research Articles
    1. Networked multiplayer cooperative interaction using decoupled motion control method in a shared virtual environment with haptic, visual and movement feedback (pages 97–109)

      Guanyang Liu and Keke Lu

      Article first published online: 25 JUL 2012 | DOI: 10.1002/cav.1475

      Thumbnail image of graphical abstract

      Decoupled motion control, which allows one user to manipulate a haptic interface to control only one-dimensional movement of an avatar, is presented as a new type haptic-based cooperation among multiple users. It is different from previous haptic cooperation where all users can apply forces on an avatar along any direction to move it, the motion of which completely depends on the resultant force. A novel concept of movement feedback is put forward where one user can sense other users' hand motions through his or her own haptic interface.

    2. Anticipatory behavior in virtual universe, application to a virtual juggler (pages 111–125)

      C. Buche and P. De Loor

      Article first published online: 11 OCT 2012 | DOI: 10.1002/cav.1486

      Thumbnail image of graphical abstract

      To be believable, virtual entities must be equipped with the ability to anticipate, that is, to predict the behavior of the other entities and the subsequent consequences on the environment. This principle is illustrated by the development of an artificial juggler in 3D.

    3. Haptic collision handling for simulation of transnasal surgery (pages 127–141)

      André Neubauer , Rupert Brooks, Iman Brouwer, Patricia Debergue and Denis Laroche

      Article first published online: 23 OCT 2012 | DOI: 10.1002/cav.1489

      Thumbnail image of graphical abstract

      This paper presents a novel algorithm for haptic collision handling, designed to meet the challenges posed by simulation of endoscopic transnasal surgery. Navigation of the simulated rigid endoscope through the narrow nasal cavity leads to intense multidirectional contact. The new algorithm applies contact forces in an effective way to open up the passage in a realistic fashion, allowing for smooth and fluent simulation as well as intuitive haptic feedback.

    4. Hardware-accelerated dynamic clustering of virtual crowd members (pages 143–153)

      Murat Haciomeroglu, Cumhur Yigit Ozcan, Oner Barut, Levent Seckin and Hayri Sever

      Article first published online: 8 OCT 2012 | DOI: 10.1002/cav.1491

      Thumbnail image of graphical abstract

      In this study, a hardware-accelerated dynamic clustering of moving virtual entities technique is proposed. By clustering virtual entities, both clustered and unclustered virtual agents became more aware of other agents’ topological configurations.

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