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CoMo: Learning Continuous Latent Motion from Internet Videos for Scalable Robot Learning

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arxiv 2505.17006 v3 pith:SIX5YOXP submitted 2025-05-22 cs.CV cs.RO

CoMo: Learning Continuous Latent Motion from Internet Videos for Scalable Robot Learning

classification cs.CV cs.RO
keywords learningmotionlatentcomotemporalvideosactioncontinuous
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Unsupervised learning of latent motion from Internet videos is crucial for robot learning. Existing discrete methods generally mitigate the shortcut learning caused by extracting excessive static backgrounds through vector quantization with a small codebook size. However, they suffer from information loss and struggle to capture more complex and fine-grained dynamics. Moreover, there is an inherent gap between the distribution of discrete latent motion and continuous robot action, which hinders the joint learning of a unified policy. We propose CoMo, which aims to learn more precise continuous latent motion from internet-scale videos. CoMo employs an early temporal difference (Td) mechanism to increase the shortcut learning difficulty and explicitly enhance motion cues. Additionally, to ensure latent motion better captures meaningful foregrounds, we further propose a temporal contrastive learning (Tcl) scheme. Specifically, positive pairs are constructed with a small future frame temporal offset, while negative pairs are formed by directly reversing the temporal direction. The proposed Td and Tcl work synergistically and effectively ensure that the latent motion focuses better on the foreground and reinforces motion cues. Critically, CoMo exhibits strong zeroshot generalization, enabling it to generate effective pseudo action labels for unseen videos. Extensive simulated and real-world experiments show that policies co-trained with CoMo pseudo action labels achieve superior performance with both diffusion and auto-regressive architectures.

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Cited by 13 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

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    RotVLA models latent actions as continuous SO(n) rotations with triplet-frame supervision and flow-matching to reach 98.2% success on LIBERO and 89.6%/88.5% on RoboTwin2.0 using a 1.7B-parameter model.

  2. From Imagined Futures to Executable Actions: Mixture of Latent Actions for Robot Manipulation

    cs.RO 2026-05 unverdicted novelty 7.0

    MoLA infers a mixture of latent actions from generated future videos via modality-aware inverse dynamics models to improve robot manipulation policies.

  3. Being-H0.7: A Latent World-Action Model from Egocentric Videos

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    Being-H0.7 adds future-aware latent reasoning to direct VLA policies via dual-branch alignment on latent queries, matching world-model benefits at VLA efficiency.

  4. DreamDojo: A Generalist Robot World Model from Large-Scale Human Videos

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  7. Mitigating State Aliasing in Vision-Language-Action Models via Inverse Dynamics Learning

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  8. GazeVLA: Learning Human Intention for Robotic Manipulation

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    villa-X enhances latent action modeling in VLA models to support zero-shot action planning for unseen robot embodiments and open-vocabulary instructions, yielding better manipulation results in simulation and real-wor...

  11. LAFP: Preserving Latent Action Structure in Latent Policy Learning via Flow Matching

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  12. CoLA-Flow Policy: Temporally Coherent Imitation Learning via Continuous Latent Action Flow Matching for Robotic Manipulation

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  13. Motus: A Unified Latent Action World Model

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