Paper Overview
Field: Computer Vision / Robotics Authors: Peiyan Li, Yixiang Chen, Yuan Xu, et al. arXiv: 2604.03181
Abstract
Robotic manipulation requires understanding both the 3D spatial structure of the environment and its temporal evolution, yet most existing policies overlook one or both. They typically rely on 2D visual observations and backbones pretrained on static image-text pairs, resulting in high data requirements and limited understanding of environment dynamics.
To address this, the authors introduce MV-VDP, a multi-view video diffusion policy that jointly models the 3D spatio-temporal state of the environment. The core idea is to simultaneously predict multi-view heatmap videos and RGB videos, which:
1. Align the representation format of video pretraining with action finetuning 2. Specify not only what actions the robot should take, but also how the environment is expected to evolve in response to those actions
Key Findings
- Extensive experiments show that MV-VDP can successfully execute complex real-world tasks with only 10 demonstration trajectories, highlighting strong sample efficiency.
- Joint multi-view heatmap + RGB video prediction enables explicit modeling of both 3D structure and temporal dynamics.
*Auto-collected on 2026-04-06.*