Learning Implicit Temporal Alignment for Few-shot Video Classification

Model Overview

Abstract

Few-shot video classification aims to learn new video categories with only a few labeled examples, alleviating the burden of costly annotation in realworld applications. However, it is particularly challenging to learn a class-invariant spatial-temporal representation in such a setting. To address this, we propose a novel matching-based few-shot learning strategy for video sequences in this work. Our main idea is to introduce an implicit temporal alignment for a video pair, capable of estimating the similarity between them in an accurate and robust manner. Moreover, we design an effective context encoding module to incorporate spatial and feature channel context, resulting in better modeling of intra-class variations. To train our model, we develop a multi-task loss for learning video matching, leading to video features with better generalization. Extensive experimental results on two challenging benchmarks, show that our method outperforms the prior arts with a sizable margin on SomethingSomething-V2 and competitive results on Kinetics.

Publication
In The 30th International Joint Conference on Artificial Intelligence
Songyang Zhang
Songyang Zhang
PhD Student

My research interests include few/low-shot learning, graph neural networks and video understanding.

Jiale Zhou
Jiale Zhou
Master Students

My research interests include few-shot learning, incremental learning and reinforcement learning.

Xuming He
Xuming He
Associate Professor

My research interests include few/low-shot learning, graph neural networks and video understanding.

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