Rethinking Learning Approaches for Long-Term Action Anticipation

• URL: http://arxiv.org/abs/2210.11566v1
• Date: Thu, 20 Oct 2022 20:07:30 GMT
• Title: Rethinking Learning Approaches for Long-Term Action Anticipation
• Authors: Megha Nawhal, Akash Abdu Jyothi, Greg Mori
• Abstract summary: Action anticipation involves predicting future actions having observed the initial portion of a video. We introduce ANTICIPATR which performs long-term action anticipation. We propose a two-stage learning approach to train a novel transformer-based model.
• Score: 32.67768331823358
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Action anticipation involves predicting future actions having observed the initial portion of a video. Typically, the observed video is processed as a whole to obtain a video-level representation of the ongoing activity in the video, which is then used for future prediction. We introduce ANTICIPATR which performs long-term action anticipation leveraging segment-level representations learned using individual segments from different activities, in addition to a video-level representation. We propose a two-stage learning approach to train a novel transformer-based model that uses these two types of representations to directly predict a set of future action instances over any given anticipation duration. Results on Breakfast, 50Salads, Epic-Kitchens-55, and EGTEA Gaze+ datasets demonstrate the effectiveness of our approach.

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