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This research introduces GEM3D, a framework that learns amodal 3D representations from single-view RGB-D data to enable robust robotic manipulation without relying on multi-view inputs during inference. By combining point-cloud reconstruction with Gaussian splatting for novel-view consistency, the method successfully transfers geometric understanding into deployable visuomotor policies, demonstrating strong zero-shot generalization to unseen camera poses. The work advances the field of embodied AI by addressing critical limitations in viewpoint robustness and representation fidelity for real-world robotic tasks.
Learning Geometrically-Grounded Amodal 3D Representations for View-Generalizable Robotic Manipulation
arXiv:2601.22988v2 Announce Type: replace Abstract: Real-world robotic manipulation requires visuomotor policies capable of robust 3D scene reasoning under varying camera viewpoints. While recent 3D-aware manipulation policies have shown promise, they still face several limitations: (i) reliance on multi-view observations during inference, which is impractical in camera-constrained deployments; (ii) insufficient geometric fidelity in learned representations, limiting precise and viewpoint-robust control; and (iii) the lack of effective mechanisms for transferring pretrained 3D representations to downstream visuomotor policies. To address these challenges, we present GEM3D (Geometrically-Grounded 3D Manipulation), a unified 3D representation and policy learning framework for view-generalizable robotic manipulation. GEM3D learns amodal 3D representations from single-view RGB-D observations by jointly enforcing point-cloud reconstruction and Gaussian-splatting-based novel-view consistency during pretraining. A multi-step distillation strategy then transfers the learned geometric understanding into a deployable single-view visuomotor policy for downstream manipulation control. Experiments on 12 RLBench tasks and three real-world tasks demonstrate strong manipulation performance. Further zero-shot evaluations on eight RLBench tasks and the real-world tasks show robust generalization to unseen camera poses and substantial gains over existing methods.
Abstract:Real-world robotic manipulation requires visuomotor policies capable of robust 3D scene reasoning under varying camera viewpoints. While recent 3D-aware manipulation policies have shown promise, they still face several limitations: (i) reliance on multi-view observations during inference, which is impractical in camera-constrained deployments; (ii) insufficient geometric fidelity in learned representations, limiting precise and viewpoint-robust control; and (iii) the lack of effective mechanisms for transferring pretrained 3D representations to downstream visuomotor policies. To address these challenges, we present GEM3D (Geometrically-Grounded 3D Manipulation), a unified 3D representation and policy learning framework for view-generalizable robotic manipulation. GEM3D learns amodal 3D representations from single-view RGB-D observations by jointly enforcing point-cloud reconstruction and Gaussian-splatting-based novel-view consistency during pretraining. A multi-step distillation strategy then transfers the learned geometric understanding into a deployable single-view visuomotor policy for downstream manipulation control. Experiments on 12 RLBench tasks and three real-world tasks demonstrate strong manipulation performance. Further zero-shot evaluations on eight RLBench tasks and the real-world tasks show robust generalization to unseen camera poses and substantial gains over existing methods.
Robotics (cs.RO)
arXiv:2601.22988 [cs.RO]
(or arXiv:2601.22988v2 [cs.RO] for this version)
https://doi.org/10.48550/arXiv.2601.22988 Focus to learn more arXiv-issued DOI via DataCite
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