Title :
Predictive coding for efficient host-device communication in a pneumatic force-feedback display
Author :
Borst, Christoph W.
Author_Institution :
Center for Adv. Comput. Studies, Univ. of Louisiana, Lafayette, LA, USA
Abstract :
We investigate predictive coding for reducing the amount of data communicated between a haptic controller and a host. This allows increased update rate, which potentially improves quality even if coding is lossy. A low-order predictive coding is investigated for a pneumatic force display. Due to human and device characteristics, some compression is possible without loss, although the technique is lossy in general. Lossy uniform and nonuniform quantizers are also investigated. An experiment was conducted to determine how much data reduction is possible before compression artifacts become detectable to users.
Keywords :
data compression; data reduction; force feedback; haptic interfaces; linear predictive coding; pneumatic actuators; sensors; data compression; data reduction; haptic controller; host-device communication; lossy uniform quantizer; pneumatic force-feedback display; predictive coding; Bandwidth; Computer displays; Decoding; Encoding; Force control; Force sensors; Haptic interfaces; Low pass filters; Pistons; Predictive coding;
Conference_Titel :
Eurohaptics Conference, 2005 and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, 2005. World Haptics 2005. First Joint
Print_ISBN :
0-7695-2310-2
DOI :
10.1109/WHC.2005.108
