Poster
Trajectory-aligned Space-time Tokens for Few-shot Action Recognition
Pulkit Kumar · Namitha Padmanabhan · Luke Luo · Sai Saketh Rambhatla · Abhinav Shrivastava
# 203
Strong Double Blind |
[
Poster]
[
Supplemental]
Thu 3 Oct 1:30 a.m. PDT
— 3:30 a.m. PDT
Abstract:
We propose a simple yet effective approach for few-shot action recognition, emphasizing the disentanglement of motion and appearance representations. By harnessing recent progress in tracking, specifically point trajectories, and self-supervised representation learning, we build trajectory-aligned tokens (TATs) that capture motion and appearance information. This approach significantly reduces the data requirements while retaining essential information. To process these representations, we use a Masked Space-time Transformer that effectively learns to aggregate information to facilitate few-shot action recognition. We demonstrate state-of-the-art results on few-shot action recognition across multiple datasets.
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