FIction: 4D Future Interaction Prediction from Video

• URL: http://arxiv.org/abs/2412.00932v1
• Date: Sun, 01 Dec 2024 18:44:17 GMT
• Title: FIction: 4D Future Interaction Prediction from Video
• Authors: Kumar Ashutosh, Georgios Pavlakos, Kristen Grauman,
• Abstract summary: We introduce 4D future interaction prediction from videos. Given an input video of a human activity, the goal is to predict what objects at what 3D locations the person will interact with in the next time period. We show that our proposed approach outperforms prior autoregressive and (lifted) 2D video models substantially.
• Score: 63.37136159797888
• License:
• Abstract: Anticipating how a person will interact with objects in an environment is essential for activity understanding, but existing methods are limited to the 2D space of video frames-capturing physically ungrounded predictions of 'what' and ignoring the 'where' and 'how'. We introduce 4D future interaction prediction from videos. Given an input video of a human activity, the goal is to predict what objects at what 3D locations the person will interact with in the next time period (e.g., cabinet, fridge), and how they will execute that interaction (e.g., poses for bending, reaching, pulling). We propose a novel model FIction that fuses the past video observation of the person's actions and their environment to predict both the 'where' and 'how' of future interactions. Through comprehensive experiments on a variety of activities and real-world environments in Ego-Exo4D, we show that our proposed approach outperforms prior autoregressive and (lifted) 2D video models substantially, with more than 30% relative gains.

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