GUIDER: Evaluating Goal-Free Human Intent Inference for Teleoperated Manipulation on Real-Robot Data
Organizations: Human–Machine Interaction and Innovation Lab (HMI2), Dept. of Electrical & Computer Engineering, Santa Clara University, Santa Clara, CA, USA. · Extreme Robotics Lab, School of Metallurgy and Materials, University of Birmingham, Birmingham, United Kingdom. · School of Electronic Engineering and Computer Science, Queen Mary University of London, London, United Kingdom. · Intelligent Systems Engineering Dept., Luddy School of Informatics, Computing, and Engineering, Indiana University, Bloomington, IN, USA
Abstract
This paper presents an evaluation of a goal-free probabilistic framework for human intent inference during robotic manipulation. We deploy the Global User Intent Dual-phase Estimation for Robots (GUIDER) on data collected from a robotic arm to test the manipulation phase across various assistance scenarios, including making tea and fetching medicine. To support operation, we add online probability updates, workspace limits, support-plane filtering, and a grasping mode that prioritizes feasible grasp regions, all of which are tested on the recorded data while preserving its original temporal conditions. Across 20 manipulation steps in three scenarios, GUIDER estimated human intent within the correct grasp-candidate set in all cases and achieved a time to confident prediction of 3.7 s, a remaining time before first grasp of 49.6 s, a prediction stability of 96.4%, and a runtime of 4.857/4.474 s (mean/median) per perceptual phase of intent.
Figures & tables
| Stage | Mean / Median [s] |
|---|---|
| 2D 3D point cloud reconstruction | 0.671 / 0.745 |
| RANSAC plane fitting | 0.421 / 0.354 |
| HDBSCAN clustering | 0.863 / 0.813 |
| U 2 -Net saliency detection | 0.370 / 0.404 |
| FastSAM filtering | 2.007 / 1.894 |
| Saliency probability fusion | 0.002839 / 0.002732 |
| Scenario | Trial | Step | TCP | RTCP | Prediction stability | Target within predicted items | Human time to first grasp | Runtime |
|---|---|---|---|---|---|---|---|---|
| Making Tea | Trial 1 | Tea bag | 4.1s | 40.9s | 100.0% | Yes | 45s | 5.52s |
| Making Tea | Trial 1 | Water container | 4.7s | 51.3s | 100.0% | Yes | 56s | 5.21s |
| Making Tea | Trial 2 | Tea bag | 0.0s | 37.0s | 99.8% | Yes | 37s | 4.60s |
| Making Tea | Trial 2 | Water container | 0.3s | 94.7s | 95.2% | Yes | 95s | 3.44s |
| Making Tea | Trial 3 | Tea bag | 0.0s | 41.0s | 67.4% | Yes | 41s | 5.49s |
| Making Tea | Trial 3 | Water container | 5.7s | 85.3s | 100.0% | Yes | 91s | 4.91s |
Human-Robot Interaction
Human-robot interaction studies how people and robots communicate, coordinate, and safely work or live together.
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