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Oct 28Wed
  1. arXiv cs.RO62

    RAPID: A Robotic Agent Platform for EV Battery Pack Disassembly

    The authors propose RAPID, a robotic agent disassembly platform that integrates a gantry-mounted industrial robotic arm, RGB-D perception, and an automated nut-running tool to remove fasteners on a full-scale EV battery pack. Open-vocabulary object detection achieves 0.9757 mAP50; among three one-shot fastener removal strategies, taught-in poses achieved a 97% success rate in 24 minutes, one-shot vision execution achieved 57% in 29 minutes, and visual servoing achieved 83% in 36 minutes (n=204).

  2. arXiv cs.RO65

    MO-Playground: Massively Parallel Multi-Objective Reinforcement Learning for Robotics

    The authors propose MORLAX, a GPU-native multi-objective reinforcement learning algorithm, and MO-Playground, a pip-installable GPU-accelerated multi-objective environment library. They can approximate Pareto sets within minutes, achieving 26-271x speedups over traditional CPU methods and up to 19x speedups over prior GPU methods, while learning Pareto front hypervolumes that are superior. The team also implemented a custom BRUCE humanoid robot environment, learning Pareto-optimal locomotion policies in simulation across 6 practical objectives such as smoothness, energy efficiency, and arm swinging.

  3. arXiv cs.RO60

    RPT*: Global Planning with Probabilistic Terminals for Target Search in Complex Environments

    The paper studies the Hamiltonian Path Problem with Probabilistic Terminals (HPP-PT), whose goal is for a mobile robot to visit all candidate locations to find a target while minimizing expected path cost. The authors propose RPT*, a search method with optimality guarantees that uses dynamic programming in a new state space to bypass history dependency, along with a heuristic to speed up computation. The RPT*-based HATS system, combined with Bayesian filtering or autonomous exploration, found targets faster than baseline methods on average in both simulation and real-robot experiments.

  4. arXiv cs.RO62

    Semantic-Geometric Task Representation for Bimanual Manipulation from Human Demonstrations to Robot Action Planning

    The authors propose a semantic-geometric graph task representation that jointly encodes object identities, inter-object semantic relations, and each object's motion history, consisting of an MPNN encoder and a Transformer decoder; the encoder processes only the temporal scene graph and produces structured representations decoupled from action labels.

  5. arXiv cs.RO67

    DreamTacVLA: A VLA framework that uses a tactile world model to predict future contact

    DreamTacVLA proposes a framework that grounds VLA models in contact physics, learning contact dynamics by predicting future tactile signals. The model uses hierarchical perception, taking high-resolution tactile images as micro-vision inputs combined with wrist-camera local vision and third-person macro vision, and uses a Hierarchical Spatial Alignment (HSA) loss to align tactile tokens with their spatial counterparts in the wrist and third-person views.

  6. arXiv cs.RO62

    CLEAR-IR: Reconstructing Infrared Images into RGB-Style Images to Support Robot Perception in Dark Environments

    CLEAR-IR proposes a dual-stream architecture that reconstructs clean, RGB-style images from infrared images containing structured-light emitter patterns, allowing vision pipelines originally trained on RGB to keep working when no visible light is available. Inspired by DeepMAO, the architecture was evaluated on object detection, ArUco marker detection, and visual SLAM, covering scenarios ranging from well-lit to completely dark; in complete darkness, passive RGB enhancement methods fail because the sensor receives no signal. The paper has been accepted to IEEE/RSJ IROS 2026.

  7. arXiv cs.RO59

    Study: Active sampling with vision-based tactile sensors for hardness classification

    The paper investigates active sampling strategies based on vision-based tactile sensors (VBTS) for sample-efficient hardness classification, using information-theoretic measures of model uncertainty. The authors evaluated three probabilistic classifiers, two active sampling strategies, and a random sampling baseline on a hardness classification task using their own VBTS dataset collected by a robot and a previously published dataset, and also conducted a human study on hardness classification with the same objects. Results show that the active sampling methods using variance and entropy as uncertainty measures performed best, reaching 90% accuracy, compared with human accuracy of 48%.

  8. arXiv cs.RO62

    Research team builds egocentric tennis dataset and evaluates vision models' spatiotemporal prediction capabilities

    The research team collected an annotated egocentric tennis dataset and trained and evaluated image encoders, video encoders, and vision-language models on seven spatiotemporal prediction tasks. The best models achieved current-frame localization errors of 0.14 m for the egocentric player and 0.54 m for the ball, with trajectory prediction errors of 0.34 m and 0.91 m respectively within 1.1 seconds, and a mean error of 0.14 seconds for contact-time prediction. Auxiliary depth information notably improved 3D ball localization, while longer image histories did not improve ball trajectory prediction; the team also proposed a conditional diffusion model that generates full-body tennis kinematics from egocentric video at real-time rates.

  9. arXiv cs.RO40

    Understanding Human-Robot Collaboration Through Joint Action Theory: A Systematic Review of 83 Empirical Studies

    A systematic review following PRISMA 2020 examined 83 empirical papers on human-robot collaboration published between 2021 and 2026, using Joint Action theory to classify them into nine constructs under three capacities: Representation, Prediction, and Integration. The analysis reveals how these constructs are distributed and co-occur across studies, identifies where empirical evidence is concentrated and where it is absent, and offers guidelines for future research.

  10. arXiv cs.RO60

    JAM: A Unified Action Model Framework for VLA and WAM

    The authors propose the Just Action Model (JAM) framework, which breaks down the differences between VLA and WAM into three separable choices: backbone initialization, the loss objective on future observations, and whether that loss mechanism is retained at inference. JAM unifies both into a structure of a pretrained visual backbone plus an action expert, trained with an action loss and a foresight loss.

  11. arXiv cs.RO55

    MCP-Net: A Real-Time Coronary Perception Network and Topological Analysis for Robotic Guidewire Navigation

    The authors propose a simulation-driven framework centered on a multi-task coronary perception network, MCP-Net, for robotic guidewire navigation, integrating coronary vessel segmentation, vascular topology extraction, and roadmap generation. The method generates simulated fluoroscopy images and simulation-derived ground truth from three-dimensional coronary CT angiography, including simulated guidewires, stenotic lesions of varying severity, and diverse vascular geometries. MCP-Net jointly performs vessel segmentation, guidewire-tip localization, and stenosis localization from a single fluoroscopic frame.

  12. arXiv cs.RO38

    Polarity-Time Interaction and Multi-Level Reliability for Event-Based Spacecraft Pose Estimation

    This study proposes a reliability-aware framework that connects polarity-time localization, geometric recovery, event-CAD refinement, and trajectory optimization in sequence, using a three-branch representation that combines positive events, negative events, and recent-event timing. On the official SPADES challenge test set, the complete system achieves a combined pose score of 0.0474, about 5.4% lower than PASAN+IRIS. Ablations show that base localization with uniform PnP scores 0.0772, while the full cascade reduces it to 0.0514; under identical single-frame observations, quality weighting lowers the score from 0.0549 to 0.0514.

  13. arXiv cs.RO58

    Study Reveals Effect of Policy Standard Deviation on Loss of Plasticity in Online Reinforcement Learning

    The paper analyzes loss of plasticity (LoP) in isotropic Gaussian policies within Proximal Policy Optimization (PPO), noting that the policy standard deviation σ significantly affects the extent of LoP, with theoretical and experimental support. The experiments include LoP benchmark comparisons and real-world policy deployment on a 7-DoF robotic arm; the authors also use these findings to explain why common LoP mitigation methods are effective.

  14. arXiv cs.RO64

    ThinkWorld: A VLA Learning Framework That Reinforces Chain-of-Dynamics Reasoning with World Imagination

    ThinkWorld is a vision-language-action (VLA) learning framework that represents each action thought as a Chain-of-Dynamics (CoD), a sequence of discrete motion tokens that captures the intermediate dynamics connecting the current world to a future state and serves as a common action representation across embodiments.

  15. arXiv cs.RO75

    In-hand object pose reaching strategy and safety filter for the LEAP dexterous hand

    The research team proposed a training recipe for in-hand object pose reaching with the LEAP dexterous hand. It trains in simulation without human data and, after system identification, transfers zero-shot to the real robot, using either motion capture or a single wrist-mounted monocular depth camera. In a real-robot evaluation with 4 objects and 4,800 unseen targets over 13.3 hours, the state-based policy reached 95.2% of targets within 2 cm and 0.4 rad; adding a learned residual safety filter with adjustable conservativeness reduced drops by 75% while still reaching 91.5% of targets.

  16. arXiv cs.RO72

    RESPLE2: Inertial-Informed Non-Uniform B-Spline Multi-Sensor Odometry with Global Optimization

    RESPLE2 proposes a recursive multi-sensor state estimation framework based on non-uniform B-splines for 6-DoF motion representation, using the knot-clamping boundary property to predict control points directly from inertial kinematics. Prediction and reset are performed within an iterated extended Kalman filter, and the update step fuses LiDAR, camera, IMU, and leg kinematics at their native timestamps; a separate lightweight global optimization module refines control points using LiDAR-visual loop-closure constraints.

  17. arXiv cs.RO63

    EgoThumb: A Vision-Driven Supernumerary Robotic Thumb for Autonomous Grasping and Holding Assistance

    EgoThumb is a fully open-source, vision-driven supernumerary robotic thumb that uses a visual imitation learning policy to map first-person images from a palm-facing camera directly to continuous joint positions, enabling autonomous grasping and holding assistance. Its compact dual tendon-driven finger relocates the actuation unit to the forearm to reduce distal weight and support precise active joint control. The authors state that the design generalizes across different users and environments, that both hardware and software are open-sourced, and that the paper has been accepted to IROS.

  18. arXiv cs.RO71

    Research team uses differentiable simulation to learn quadrotor dynamic narrow-gap traversal from scratch

    The research proposes a differentiable moving narrow-gap modeling method that gates centering, alignment, and smooth collision terms by signed distance to a time-varying gap plane, turning sparse traversal events into dense pathwise objectives, and integrates this into a visual-feature-to-command policy trained in a single stage from random initialization, without a teacher, planner, or distillation. In simulation, path gradients clearly outperform score-function gradients, reaching a 99.3% success rate after a few minutes of training on a single GPU. The policy transfers directly to a real quadrotor using only onboard vision and inertial measurements, successfully traversing the dynamic narrow gap in 8 of 10 real-world trials.

  19. arXiv cs.RO58

    CRS: A Joint-Constraint-Referenced Evaluation Method for Articulated Object Manipulation

    The authors propose Constraint-Referenced Strategy (CRS), which projects the end-effector twist commanded by a policy onto the object's joint axis, separating progress along the joint direction from off-constraint waste. On 74 simulated articulated objects, binary success rate only shows a lower transfer failure rate without attribution, whereas the two CRS channels give each a distinct signature.

  20. arXiv cs.RO65

    ARC: Using Human Corrections to Guide Residual Correction of Robot Policies

    The paper proposes Adaptive Residual Correction (ARC), which learns residual corrections via reinforcement learning on top of a frozen imitation policy, using sparse human corrections to decide when to activate residual control and in which direction of the residual action space to explore. On three precision manipulation tasks with a real robot, ARC raises average task success from 33.3% to 75.0%; the human corrections define 2-3 dimensional task-relevant subspaces of the seven-joint residual space, retaining 96.0-97.7% of the squared correction magnitude.

  21. arXiv cs.RO80

    Rendering-Free Event Frame Simulation Accelerates Reinforcement Learning for Autonomous Robot Navigation

    The authors propose an analytic event simulator that synthesizes event streams directly from scene geometry and ego-motion without image rendering, generating 64x64 event observations in just 17 microseconds on a single GPU, over 400 times faster than state-of-the-art rendering pipelines. Reinforcement learning training for an event-camera obstacle-avoidance policy based on this simulator converges in under 30 minutes, three orders of magnitude faster than training on rendered events, and transfers zero-shot to ray-traced event simulation in Isaac Sim.

    Why it matters: This work uses analytic event simulation to bypass image rendering, cutting event-camera reinforcement learning training time to under 30 minutes, and completes real-world deployment on a 56-gram drone.

  22. arXiv cs.RO60

    StabBot: Robotic Pipe Stabbing with Learned Stereo Vision and Residual Reinforcement Learning

    The StabBot robotic stabbing system uses a pendulum Kalman filter to track pipe joints in stereo images, approaches at matched speed, and confirms the final few millimeters by touch. In 200 randomized jobs, StabBot completed every stab, versus 74% for a conventional fixed guide; median contact speed fell from 18.4 cm/s to 2.3 cm/s, and median peak head-pipe force fell from 11.3 kN to 1.4 kN.

  23. arXiv cs.RO55

    Which Hand Was Late? Diagnosis for Robot Failure Recovery in Bimanual Tool Use

    The study measures, on a simulated bimanual tool-use task, which failure causes each sensing channel lets a diagnoser identify: a tool slipping out of its socket can be read on the tool-hand side; which hand was late requires information from both arms, while a sensor on one hand can only read that hand's own delay and part of the other hand's delay; and when the tool hand is late, passive sensing cannot determine whether the push force was also insufficient.

  24. arXiv cs.RO58

    Non-line-of-sight passive object sensing using distributed sensing and hyperdimensional computing

    The paper proposes a framework that relies solely on distributed channel measurements from communication infrastructure to sense passive entities outside a robot's field of view and perform risk-aware classification. The method uses hyperdimensional computing (HDC) to embed measurements into high-dimensional representations without explicit channel reconstruction. Numerical simulations based on commercial ray tracing and validation in a ROS smart factory scenario show accuracy of up to 89% under severe occlusion while maintaining low computational complexity.

  25. arXiv cs.RO70

    World Dreamer v5-lite: Multi-Robot World Action Model with a Single Dreamer

    World Dreamer v5-lite is a multi-robot world action model that predicts separate action sequences for each robot through a shared world state. The model builds the world state in workspace coordinates from calibrated features of a pretrained video encoder, and its spatial size does not change as views are added; a vision-language model provides scene context and one query per robot, and the queries read the shared state and exchange pose-aware information while their action streams remain separate.

  26. arXiv cs.RO58

    Ego-CEVR: Learning Cross-Embodiment Visual Representations from Human Egocentric Videos

    Ego-CEVR proposes a data-native hierarchical visual representation learning framework that assigns distinct learning objectives to global and interaction representations. The global module learns object relations, task state, and temporal progress through future prediction on egocentric video; the interaction module interprets wrist observations in global context and learns local alignment and contact cues through robot action supervision. Two residual paths feed both representations into the action policy simultaneously, and the global video module can be pretrained independently on large-scale human egocentric videos and videos from multiple robot embodiments, without robot action labels or paired wrist observations.

  27. arXiv cs.RO60

    Reinforcement Learning-Based Autonomous Fixed-Wing Drone Interception

    A team at Delft University of Technology in the Netherlands proposed a fixed-wing interceptor controlled by a neural network that maps filtered monocular vision observations directly to actuator commands; the policy was trained in a custom Python environment using reinforcement learning and proximal policy optimization (PPO). In simulation, the policy outperformed two classical guidance controllers under most conditions, and it has successfully intercepted maneuvering fixed-wing targets in real flight. This work provides validation for the autonomous control of fixed-wing interception drones.

  28. arXiv cs.RO44

    Electric-Field Induction Motor with Discrete Circuit Elements and Improved Rotor Dynamics

    Researchers propose an electric-field induction motor whose rotor is made of discrete circuit elements between a finite number of conductive vanes, overcoming the limits of a single continuous material in resistivity, permittivity, and circuit characteristics. This macroscale motor uses circuitry on the rotor surface to emulate the "deep bar" rotor design of magnetic induction motors, providing higher torque over a wide speed range. The study completed the analysis, design, and demonstration of the motor.

  29. arXiv cs.RO70

    MARL-Exo: Multi-Agent Reinforcement Learning Co-Adapts Hip Exoskeleton Control to Reduce Metabolic Energy Cost

    The study proposes MARL-Exo, a multi-agent reinforcement learning framework in which a full-body musculoskeletal model and a bilateral hip exoskeleton policy are co-trained in simulation in two stages; the exoskeleton observes only delayed hip kinematics and past commands. In simulation, the metabolic policy reduced modeled muscle metabolic power by 13.8% compared with walking without the device, and by 8.8% after adding mechanical-power shaping.

  30. arXiv cs.RO60

    AuRaSim: A Ray-Tracing Automotive FMCW Radar Simulator for Dynamic Scenarios

    AuRaSim is a ray-tracing-based automotive FMCW radar simulation framework that generates coherent multi-channel ADC data for dynamic scenarios. It builds dynamic scenes with Blender, performs GPU-accelerated electromagnetic ray tracing with Sionna RT, and adds path-level complex-coefficient propagation, motion-aware Doppler modeling, and waveform-configuration-driven ADC cube synthesis. In a digital twin scenario, the simulated and measured range-Doppler maps achieve an RMSE of 0.147 and a PSNR of 16.93 dB.

  31. arXiv cs.RO62

    QCP: Learning Quality-Controllable Robot Policies with Iterative Hindsight Relabeling

    The authors propose Quality-Controllable Policy (QCP), which enables inference-time control over individual quality attributes such as execution speed and motion smoothness, as well as their combinations. To extend the controllable quality range beyond the initial demonstrations, the authors design an iterative hindsight relabeling loop: collect online rollouts under target quality labels, add successful trajectories to the dataset, then relabel the accumulated trajectories in hindsight according to their measured quality and fine-tune the policy.

  32. arXiv cs.RO65

    PDRVLA: A vision-language-action model with physical dynamics representations

    PDRVLA proposes a lightweight Physical Dynamics Module that extracts physical tokens from vision-language features to condition action generation, without online video generation. The module learns through direct prediction of future RGB, depth, and optical-flow features, with auxiliary supervision from a frozen pretrained video world model. All training data comes from public data and was expanded through human-to-robot synthesis, subtask annotation, and embodied chain-of-thought (ECoT) annotation.

  33. arXiv cs.RO62

    VLA-Stem: Adding a Lightweight Safety Mechanism to Vision-Language-Action Models with Reinforcement Learning

    Researchers propose VLA-Stem, a lightweight reinforcement-learning-based safety mechanism that does not fine-tune the underlying VLA policy; instead, it converts its action chunks into motion references and, at inference time, adaptively corrects execution using proprioception and local obstacle information. Across six constrained simulation settings, VLA-Stem achieved an average collision-free task success rate of 52.8%, versus 23.7% for the strongest safety baseline, while preserving the original policy's performance in obstacle-free environments; real-robot experiments also showed reduced collisions under static and dynamic obstacles.

  34. arXiv cs.RO60

    Target-free joint camera-LiDAR intrinsic and extrinsic calibration method

    The authors propose a fully automatic, target-free framework that jointly estimates camera intrinsics, radial-tangential distortion, and camera-LiDAR extrinsics from raw images and LiDAR scans. The method extends deep pixel-point correspondence-based calibration from rectified images to raw cameras through intrinsic- and distortion-aware correspondence learning, and iteratively couples correspondence prediction with nonlinear optimization during calibration. Zero-shot evaluations on an unseen KITTI configuration and on three real robotic platforms show that joint calibration improves extrinsic accuracy while recovering accurate intrinsics.

  35. arXiv cs.RO58

    Tokens of Motion: Primitive Motion Learning for Human-Humanoid Skill Transfer

    The paper proposes the Adaptive Failure-Informed Learning (AFIL) framework, which uses a pretrained VLA to generate failure trajectories online as adaptive negative guidance for diffusion- and flow-based VLA policies, avoiding the need for handcrafted failure modes or human intervention for recovery. The method jointly trains two action generators (DAGs) for success and failure on a shared vision-language backbone, and at sampling time adjusts the guidance strength according to the distance between the success and failure distributions at each diffusion step. On in-domain and out-of-domain, short-horizon and long-horizon robotic manipulation tasks, AFIL improves task success rate and robustness compared with existing VLA baselines.