Can we improve over weber sampling of haptic signals?

Abstract

Abstract-In applications such as telesurgery, it is required to transmit haptic signals to a remote location with a delay of at most few milliseconds. To reduce the packet rate and yet retain perceptual quality, adaptive sampling has been explored in the literature. In particular, in earlier work we proposed and analyzed an adaptive sampling scheme based on Weber's law of perception. In this paper, we explore other possible adaptive sampling candidates. We describe an experimental setup where users are subjected to piecewise constant haptic stimuli to which they can respond with a click. We record the clicks and ask the question: can we identify signal features and classiers to predict the clicks? The answer suggests adaptive sampling schemes that improve over Weber sampling.

Toward Haptic Communications Over the 5G Tactile Internet

“…In comparison to other sampling methods such as the level crossings method (that incorporates absolute differences instead of percentages between samples), the perceptual-based kinesthetic data reduction schemes are proven to have good but similar accuracy [90]. Nonetheless, in [91] it is stated that the level crossings sampler outperforms the sampling method based on Weber's law.…”

Issues and Challenges Facing Low Latency in Tactile Internet

“…Some example of this protocol that adopted this method but modified can include the application layer protocol for haptic networking Al Osman et al (2007), adaptive multiplexer Eid et al (2011), and haptics over internet protocol Nasir and Khalil (2012). (2) Adaptive sampling based telehaptic protocols in which haptic signals samples are injected to the network with partially taking the whole samples into consideration this is due to the high bandwidth that they require, this is why and to avoid this problem, some samples will be identified and will be sent Clarke et al (2006), Bhardwaj et al (2013), and Sakr et al (2011).…”

On QoS-compliant telehaptic communication over shared networks

“…Hence, under TCP cross-traffic conditions the rate-adaptive protocol in [Gokhale et al 2017] also belongs to the class of CBR-based protocols. (2) Adaptive sampling based telehaptic protocols: This class of protocols employs the adaptive sampling scheme to compress the haptic signal [Clarke et al 2006;Hinterseer et al 2008;Sakr et al 2011;Bhardwaj et al 2013]. The idea behind adaptive sampling strategy is to identify perceptually significant haptic samples; transmitting only these samples leads to a substantial reduction in longterm average telehaptic data rate.…”