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VLM-guided Trajectory-conditioned Diffusion Policy

Updated 6 July 2026
  • The paper demonstrates a novel approach where a VLM decomposes high-level instructions into voxel-based sub-task trajectories for guiding diffusion policies.
  • The diffusion policy conditions on the generated voxel trajectory to improve action generation robustness and long-horizon performance under visual noise.
  • Experiments show up to a 44% success rate increase and significant robustness gains compared to standard diffusion policies in both simulation and real-world settings.

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