On the Synthesis of Haptic Textures

Campion, Gianni

doi:10.1007/978-0-85729-576-7_5

Cited by 5 publications

(3 citation statements)

References 24 publications

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“…The motivation for our research is in the area of haptic virtual reality and computer simulations, where tactual texture plays an important role in realism [22,5,6]. Interestingly, the synthesis of rich, artificial tactual textures have tended to resemble audio rendering techniques, being based on generating a spatial waveform that is played at the speed of exploration [22].…”

Section: Introductionmentioning

confidence: 99%

On the 1/f noise and non-integer harmonic decay of the interaction of a finger sliding on flat and sinusoidal surfaces

Wiertlewski

Hudin

Hayward

2011

2011 IEEE World Haptics Conference

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Fluctuations of the frictional force arising from the stroke of a finger against flat and sinusoidal surfaces are studied. A custommade high-resolution friction force sensor, able to resolve millinewton forces, was used to record those fluctuations as well as the net, low-frequency components of the interaction force. Measurements show that the fluctuations of the sliding force are highly non-stationary. Despite their randomness, force spectra averages reveal regularities. With a smooth, flat, but not mirror-finish, surface the background noise follows a 1/ f trend. Recordings made with pure-tone sinusoidal gratings reveal complexities in the interaction between a finger and a surface. The fundamental frequency is driven by the periodicity of the gratings and harmonics follow a non-integer power-law decay that suggests strong nonlinearities in the fingertip interaction. The results are consistent with the existence of a multiplicity of simultaneous and rapid stick-slip relaxation oscillations. Results have implications for high fidelity haptic rendering and biotribology.

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Section: Introductionmentioning

confidence: 99%

On the 1/f noise and non-integer harmonic decay of the interaction of a finger sliding on flat and sinusoidal surfaces

Wiertlewski

Hudin

Hayward

2011

2011 IEEE World Haptics Conference

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“…Concomitantly, there is a need for ever increasingly realistic virtual environments that can reproduce the various attributes of objects, including their roughness. To date, the approaches used to simulate roughness include the use of force feedback devices to replicate the microgeometry of surfaces, directly, or by reproducing its effects; see [2] for an extensive survey. Other approaches modulate the friction force that arises when a finger slips on an active surface.…”

Section: Introductionmentioning

confidence: 99%

Causality Inversion in the Reproduction of Roughness

Wiertlewski

Lozada

Pissaloux

et al. 2013

Springer Series on Touch and Haptic Systems

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Abstract. When a finger scans a non-smooth surface, a sensation of roughness is experienced. A similar sensation is felt when a finger is in contact with a mobile surface vibrating in the tangential direction. Since an actual finger-surface interaction results in a varying friction force, how can a measured friction force can be converted into skin relative displacement. With a bidirectional apparatus that can measure this force and transform it into displacement with unambiguous causality, such mapping could be experimentally established. A pilot study showed that a subjectively equivalent sensation of roughness can be achieved betweem a fixed real surface and a vibrated mobile surface.

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“…Mahvash (2006) extended the use of pre-computed forces to simulate tissue separation in realtime by interpolating unknown forces from pre-computed ones. Campion and Hayward (2008) also proposed a haptic texturing algorithm which renders frictional sliding forces based on the height of the rendered texture.…”

Section: Introductionmentioning

confidence: 99%

High Fidelity Haptic Rendering of Frictional Contact with Deformable Objects in Virtual Environments using Multi-rate Simulation

Jacobs

Çavuşoğlu

2010

The International Journal of Robotics Research

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Haptics is an increasingly common modality in human-computer interfacing. The focus of this paper is the problem arising from the difference between the high sampling rate requirements of haptic interfaces and the significantly lower update rates for physical models simulated in virtual environments. This is a critical problem, especially for applications involving haptic manipulation of deformable objects simulated in virtual environments, such as in surgical simulation. In this paper, a multi-rate simulation approach was developed to address this problem. The proposed method employs linear low-order approximations to model the inter-sample behavior of the high-order non-linear deformable object models. The basic method is also extended to achieve high-fidelity rendering of haptic manipulations involving sliding-type frictional contact. The proposed approach uses a local geometric model in addition to the local dynamic model, and performs collision detection and response as part of the high update rate haptic loop. Experimental results that validate the proposed methods are also presented.

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On the Synthesis of Haptic Textures

Cited by 5 publications

References 24 publications

On the 1/f noise and non-integer harmonic decay of the interaction of a finger sliding on flat and sinusoidal surfaces

On the 1/f noise and non-integer harmonic decay of the interaction of a finger sliding on flat and sinusoidal surfaces

Causality Inversion in the Reproduction of Roughness

High Fidelity Haptic Rendering of Frictional Contact with Deformable Objects in Virtual Environments using Multi-rate Simulation

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