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Contact-Free Grasp Stability Prediction with In-Hand Time-of-Flight Sensors

Summary

Proposes a contact-free grasp stability predictor using multi-zone time-of-flight sensors mounted on a gripper. It predicts stability without grasping, cycling at 15 Hz. Trained on over 2,500 real-world grasps across 15 objects, achieving 85.5% validation and 86.0% test accuracy.

SourcearXiv RoboticsAuthor: Kyle DuFrene, Cindy Grimm
Contact-Free Grasp Stability Prediction with In-Hand Time-of-Flight Sensors
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[2605.05461] Contact-Free Grasp Stability Prediction with In-Hand Time-of-Flight Sensors

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Computer Science > Robotics

arXiv:2605.05461 (cs)

[Submitted on 6 May 2026]

Title:Contact-Free Grasp Stability Prediction with In-Hand Time-of-Flight Sensors

Authors:Kyle DuFrene, Cindy Grimm

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Abstract:Current approaches to grasp planning for robotics demonstrate high success rates, but degrade with noisy sensors and other factors. Previous works have proposed tactile-based grasp stability classifiers to detect failures, but these approaches rely on making contact and grasping the object to do so. We propose a contact-free grasp stability predictor using multi-zone time-of-flight sensors mounted in the distal links of a gripper. Our method, as it does not require grasping the object to make a prediction, significantly speeds up the stability classification process, cycling at 15 Hz. We collected over 2,500 real-world grasps across 15 objects to train a classifier. Additionally, we conducted grasp attempts over six additional unseen objects, three for validation and model selection, and three for model testing. Our approach demonstrated strong classification performance, with an accuracy of 85.5% on validation and 86.0% on test objects.

Subjects:

Robotics (cs.RO)

Cite as: arXiv:2605.05461 [cs.RO]

(or arXiv:2605.05461v1 [cs.RO] for this version)

https://doi.org/10.48550/arXiv.2605.05461

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arXiv-issued DOI via DataCite (pending registration)

Submission history

From: Kyle DuFrene [view email] [v1] Wed, 6 May 2026 21:37:31 UTC (7,653 KB)

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Key points and analysis

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Key points

  • Novel contact-free grasp stability predictor using ToF sensors
  • Speeds up classification to 15 Hz without needing to grasp
  • Achieved 85.5% validation and 86.0% test accuracy on 15 objects

Highlights and analysis are generated automatically and may contain errors. Check the original source.