Estimation of Finger Pad Deformation Based on Skin Deformation Transferred to the Radial Side

Matsuura, Yoichiro; Okamoto, Shogo; Yamada, Yoji

doi:10.1007/978-3-662-44196-1_38

Cited by 21 publications

(16 citation statements)

References 10 publications

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“…1, the lateral deformation of the finger pad propagates to the radial side through the elastic body. Matsuura et al [20] recently confirmed that the deformations at the pad and side of a finger exhibit significant causality that can be repeatedly observed in shaking tests. Hence, the deformation at a finger pad can be linked to that at the side of the finger through the following procedures.…”

Section: Estimation Via Acceleration Measured At the Side Of The Fingermentioning

confidence: 73%

“…The skin deformation at the radial side can be measured by an accelerometer designed for the measurement of small and fast displacements. This study is based on our previous publications [20,21] in which we introduced the principles of measurement and the linear causality between the deformations of the pad and the radial side of a finger. In this paper, we also assess the accuracy of our method by means of a comparison with a method based on force sensing after specifying the skin impedance of individuals, as well as describing the principles used for the estimation.…”

Section: Introductionmentioning

confidence: 99%

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Wearable finger pad deformation sensor for tactile textures in frequency domain by using accelerometer on finger side

et al. 2017

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In this study, we set out to develop a method for estimating the fine and fast shear deformation of a finger pad, that is, the palm side of a fingertip, as it scans the surface of a material. Using a miniature accelerometer, we measured the acceleration at the radial skin, the deformation of which is accompanied by the shear deformation of the finger pad. Using a transfer function, as specified in a separate experiment, between the pad and side of a finger, we estimated the shear deformation of the finger pad in the frequency domain. A comparison between an estimate based on the accelerometer and another based on a precise force sensor for the tangential component of the interaction force between the fingertip and material surfaces showed that the estimation accuracy was sufficient for frequencies in excess of approximately 20-50 Hz and for skin deformation above 10 −6 m. Our technique merely requires that an accelerometer be attached to the side of the fingertip, which allows active texture exploration. These estimates or measurements of the finger skin deformation caused by touching materials will help us to comprehend the relationships between material surfaces and the resulting texture sensations.

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Section: Estimation Via Acceleration Measured At the Side Of The Fingermentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Wearable finger pad deformation sensor for tactile textures in frequency domain by using accelerometer on finger side

et al. 2017

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“…1, the shear deformation of the finger pad induces skin deformation on the sides of a finger. Matsuura et al [14] measured accelerations of the shear deformation of a finger padẍ p and radial skinẍ s . They observed a reproducible consistency of the relationships between these two types of accelerations for a wide frequency range.…”

Section: Deformation Based On Propagation At the Finger's Sidementioning

confidence: 99%

“…We confirmed that there is a high reproducibility of the relationships between the accelerations of the finger pad and its radial side for a wide frequency range. However, the accuracy of estimations was not examined in [14]. In this study, we assessed the accuracy of the estimation by comparing the estimation based on the radial skin with that based on the tangential interaction force exerted to the finger pad during active touch.…”

Section: Introductionmentioning

confidence: 99%

“…To solve these problems, we measured the acceleration of skin deformation at the radial side, and then estimated the acceleration of finger pad deformation [14]. Through this technique, a wearable sensor for estimating shear deformation of a finger pad that can be used even under active touch can be developed because, in principle, it merely requires an accelerometer attached to the radial side of the fingertip.…”

Section: Introductionmentioning

confidence: 99%

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Wearable Finger Pad Sensor for Tactile Textures Using Propagated Deformation on a Side of a Finger: Assessment of Accuracy

Sato

Okamoto

Matsuura

et al. 2015

2015 IEEE International Conference on Systems, Man, and Cybernetics

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Measuring the shear deformation of a finger pad during active haptic exploration of materials is important for analysis of textural sensations and development of tactile texture displays. Thus far, there has been no general methods to measure such deformations for active touch. To create a sensor system, we have been developing a new method for estimating the deformation of a finger pad based on the skin deformation propagated to the radial side of a finger tip. In this study, in order to validate the method, we compared the deformation or its acceleration of finger pad estimated on the basis of the acceleration measured at the radial side and those estimated by the shear force applied to the finger pad while exploring a few types of materials. The estimation errors for the deformations at 40-450 Hz were smaller than human discrimination thresholds, indicating that the accuracy of our method is satisfactory compared with human perceptual sensitivity.

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Influence of Scanning Velocity on Skin Vibration for Coarse Texture

Kimura

Natsume

Tanaka

2018

Haptics: Science, Technology, and Applications

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Estimation of Finger Pad Deformation Based on Skin Deformation Transferred to the Radial Side

Cited by 21 publications

References 10 publications

Wearable finger pad deformation sensor for tactile textures in frequency domain by using accelerometer on finger side

Wearable finger pad deformation sensor for tactile textures in frequency domain by using accelerometer on finger side

Wearable Finger Pad Sensor for Tactile Textures Using Propagated Deformation on a Side of a Finger: Assessment of Accuracy

Influence of Scanning Velocity on Skin Vibration for Coarse Texture

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