Robust Surface Recognition With the Maximum Mean Discrepancy: Degrading Haptic-Auditory Signals Through Bandwidth and Noise

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Behnam Khojasteh - , Max-Planck-Institut für Intelligente Systeme, Universität Stuttgart (Autor:in)
  • Yitian Shao - , Exzellenzcluster CeTI: Zentrum für Taktiles Internet, Max-Planck-Institut für Intelligente Systeme (Autor:in)
  • Katherine J. Kuchenbecker - , Max-Planck-Institut für Intelligente Systeme, Universität Stuttgart (Autor:in)

Abstract

Sliding a tool across a surface generates rich sensations that can be analyzed to recognize what is being touched. However, the optimal configuration for capturing these signals is yet unclear. To bridge this gap, we consider haptic-auditory data as a human explores surfaces with different steel tools, including accelerations of the tool and finger, force and torque applied to the surface, and contact sounds. Our classification pipeline uses the maximum mean discrepancy (MMD) to quantify differences in data distributions in a high-dimensional space for inference. With recordings from three hemispherical tool diameters and ten diverse surfaces, we conducted two degradation studies by decreasing sensing bandwidth and increasing added noise. We evaluate the haptic-auditory recognition performance achieved with the MMD to compare newly gathered data to each surface in our known library. The results indicate that acceleration signals alone have great potential for high-accuracy surface recognition and are robust against noise contamination. The optimal accelerometer bandwidth exceeds 1000 Hz, suggesting that useful vibrotactile information extends beyond human perception range. Finally, smaller tool tips generate contact vibrations with better noise robustness. The provided sensing guidelines may enable superhuman performance in portable surface recognition, which could benefit quality control, material documentation, and robotics.

Details

OriginalspracheEnglisch
Seiten (von - bis)58-65
Seitenumfang8
FachzeitschriftIEEE Transactions on Haptics
Jahrgang17
Ausgabenummer1
PublikationsstatusVeröffentlicht - 1 Jan. 2024
Peer-Review-StatusJa

Externe IDs

PubMed 38252576

Schlagworte

Schlagwörter

  • Haptic-auditory sensing, haptic surface recognition, kernel methods, machine learning, Touch Perception, Fingers, Humans, Mechanical Phenomena, Haptic Technology, Touch