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Combining accelerometer and video camera: Reconstruction of bow velocity profiles

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text
 

Genre(s)

article
 

Forme(s)

document numérique
 

Cette ressource est disponible chez l'organisme suivant : Ircam - Centre Pompidou

Identification

Titre

Combining accelerometer and video camera: Reconstruction of bow velocity profiles
 

Nom(s)

Schoonderwaldt, Erwin (auteur)
 
Rasamimanana, Nicolas H. (auteur)
 
Bevilacqua, Frédéric (auteur)
 

Publication

2006
 

Description

Sujet(s)

Bowing gestures   bowed string   violin   bow velocity   accelerometer   video tracking
 

Résumé

A cost-effective method was developed for the estimation of the bow velocity in violin playing, using an accelerometer on the bow in combination with point tracking using a standard video camera. The video data are used to detect the moments of bow direction changes. This information is used for piece-wise integration of the accelerometer signal, resulting in a drift-free reconstructed velocity signal with a high temporal resolution. The method was evaluated using a 3D motion capturing system, providing a reliable reference of the actual bow velocity. The method showed good results when the accelerometer and video stream are synchronized. Additional latency and jitter of the camera stream can importantly decrease the performance of the method, depending on the bow stroke type.
 

Note(s)

Contribution au colloque ou congrès : 6th International Conference on New Interfaces for Musical Expression
 

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Date de la notice

2010-02-25 01:00:00
 

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