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A Delay Compensation Scheme based on Prediction for Networked Haptic Collaboration System

Identifieur interne : 005A63 ( Main/Exploration ); précédent : 005A62; suivant : 005A64

A Delay Compensation Scheme based on Prediction for Networked Haptic Collaboration System

Auteurs : Seokho Son [Corée du Sud] ; Seokhee Lee [Corée du Sud] ; JONG WON KIM [Corée du Sud]

Source :

Proceedings of SPIE - The International Society for Optical Engineering [ 0277-786X ] ; 2007.

RBID : Pascal:08-0409073

Descripteurs français

Pascal (Inist)
- Synchronisation, Temps retard, Système coopératif, Réalité virtuelle, Dégradation, Système en réseau.
Wicri :
- topic : Réalité virtuelle.

English descriptors

KwdEn :
- Cooperative systems, Degradation, Delay time, Networked system, Synchronization, Virtual reality.

Abstract

Network delay in haptic-based CVEs (collaborative virtual environments) severely deteriorates the haptic interaction quality (e.g., larger force feedback than real). In order to compensate this delay effect. existing studies dynamically change spring and damper coefficients according to the network delay. However, it is difficult to choose proper coefficients to offset the delay effect by precisely reflecting virtual object characteristics. In this paper, a new delay-compensation scheme based on the force feedback prediction is proposed to improve the force feedback experience. By predicting the virtual object movements and force feedback, the proposed scheme in client side provides timely force feedback to a user. Then, it gradually converges to real (but delayed) information from the server in order to maintain the consistency of virtual environment. According to the experiment results. the proposed scheme can improve the haptic interaction quality by providing more realistic force feedback similar to that of no network delay.

Affiliations:

Corée du Sud

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000911
to stream PascalFrancis, to step Curation: 000B53
to stream PascalFrancis, to step Checkpoint: 000894
to stream Main, to step Merge: 005C66
to stream Main, to step Curation: 005A63

Le document en format XML

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<front><div type="abstract" xml:lang="en">Network delay in haptic-based CVEs (collaborative virtual environments) severely deteriorates the haptic interaction quality (e.g., larger force feedback than real). In order to compensate this delay effect. existing studies dynamically change spring and damper coefficients according to the network delay. However, it is difficult to choose proper coefficients to offset the delay effect by precisely reflecting virtual object characteristics. In this paper, a new delay-compensation scheme based on the force feedback prediction is proposed to improve the force feedback experience. By predicting the virtual object movements and force feedback, the proposed scheme in client side provides timely force feedback to a user. Then, it gradually converges to real (but delayed) information from the server in order to maintain the consistency of virtual environment. According to the experiment results. the proposed scheme can improve the haptic interaction quality by providing more realistic force feedback similar to that of no network delay.</div>
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A Delay Compensation Scheme based on Prediction for Networked Haptic Collaboration System

A Delay Compensation Scheme based on Prediction for Networked Haptic Collaboration System

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri