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arXiv · 2506.02550

Technical Report for Ego4D Long-Term Action Anticipation Challenge 2025

Qiaohui Chu·Haoyu Zhang·Yisen Feng·Meng Liu·Weili Guan·Yaowei Wang·Liqiang Nie
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Abstract

In this report, we present a novel three-stage framework developed for the Ego4D Long-Term Action Anticipation (LTA) task. Inspired by recent advances in foundation models, our method consists of three stages: feature extraction, action recognition, and long-term action anticipation. First, visual features are extracted using a high-performance visual encoder. The features are then fed into a Transformer to predict verbs and nouns, with a verb-noun co-occurrence matrix incorporated to enhance recognition accuracy. Finally, the predicted verb-noun pairs are formatted as textual prompts and input into a fine-tuned large language model (LLM) to anticipate future action sequences. Our framework achieves first place in this challenge at CVPR 2025, establishing a new state-of-the-art in long-term action prediction. Our code will be released at https://github.com/CorrineQiu/Ego4D-LTA-Challenge-2025.

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Qiaohui Chu, Haoyu Zhang, Yisen Feng, Meng Liu, Weili Guan, Yaowei Wang, Liqiang Nie. 2025-06-03. Technical Report for Ego4D Long-Term Action Anticipation Challenge 2025. https://arxiv.org/abs/2506.02550

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