1,721,179 research outputs found
Structuring a virtual environment for sport training: A case study on rowing technique
No full textThe advancements in technology and the possibility of their integration in the domain of virtual environments allow access to new application domains previously limited to highly expensive setups. This is specifically the case of sport training that can take advantage of the improved quality of measurement systems and computing techniques. Given this the challenge that emerges is related to the way training is performed and how it is possible to evaluate the transfer from the virtual setup to the real case. In this work we discuss the aspect of system architecture for a VE in sport training, taking as a case study a rowing training system. The paper will address in particular the challenges of training technique in rowing
Proceedings of the 5th International Conference on Enactive Interfaces
No full textEnactive Interfaces and Systems are a new generation of Human- Computer Interfaces (HCI) that are based on the concept of Enactive knowledge, that is the knowledge acquired by doing. These new interfaces allow to make old applications more intelligent and responsive and to create new kinds of applications.
The introduction of the Enaction concept in HCI has created a multidisciplinary research commu- nity capable of integrating theoretical model with interaction paradigms and advanced technologies like visualization systems, haptics and spatialized audio.
The Enactive Conference is an important annual meeting occasion for researchers in the field of Enactive Interfaces. This conference series has been started by in 2004 by the European Network of Excellence.
On the behalf of the Organization Committee we would like to welcome you to the proceedings of ENACTIVE08, the fifth edition of the International Conference on Enactive Interfaces. ENACTIVE08 is held in Pisa at Scuola Superiore Sant’Anna on 19th-21st November 2008.
We would like to take this opportunity to thank to all the authors and the reviewers of the papers for their precious contribution and commitment. Furthermore we would like to thank all the people of the Committees for their efforts and the Scuola Superiore Sant’Anna for the support
Self-organizing trajectories
No full textAbstract Trajectories and parameterized curves are data types of growing importance. Many measures for such data have been proposed in order to provide analogues to the mean and variance of vectors. We identify a counterintuitive oscillating behaviour of dynamic time warp-based averages on certain data sets. We present an algorithm that combines ideas from from both self-organizing maps and dynamic time warping that avoids these oscillations and hence promises more representative curve averages. These improvements also allow for accurate estimation of the piece-wise variance for a set of general N-dimensional trajectories. The run-time performance is demonstrated on movement data from rowing, where we are able to provide performance feedback in real-time to users in a simulator
Boat Dynamics and Force Rendering Models for the SPRINT System
No full textThe skills professional rowing indoor training (SPRINT) system is designed to support rowing training. The sys- tem includes a configurable instrumented rowing apparatus that supports sculling and sweep rowing and that is coupled with a vir- tual reality display and haptic feedback. Herein, the system has been updated with models that aim at improving force rendering and at simulating the rowing dynamics. These new models support the rendering of vertical and horizontal forces on the hands and they estimate the effects that actions performed on SPRINT would produce on an actual rowing shell. A proof of concept evaluation with one expert and one intermediate rower included a comparison of data gathered on an actual boat and with SPRINT. Outputs of the boat dynamics model showed to be consistent when compared both with the literature and on-boat data. Moreover, these prelimi- nary data suggest boat dynamics output to be useful to discriminate expertise. In addition, subjective ratings of kinematic features and force rendering by expert and intermediate rowers indicated that they find SPRINT suitable for training
Multisensorial Communication method between services and remote users and system architecture for actuating it: Virtual Laboratory
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Portable Haptic Interface with Omni-Directional Movement and Force Capability
No full textWe describe the design of a new mobile haptic interface that employs wheels for force rendering. The interface, consisting of an omni-directional Killough type platform, provides 2DOF force feedback with different control modalities. The system autonomously performs sensor fusion for localization and force rendering. This paper explains the relevant choices concerning the functional aspects, the control design, the mechanical and electronic solution. Experimental results for force feedback characterization are reported
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