2022

Universal Prototype Transport for Zero-Shot Action Recognition and Localization

Mettes, Pascal

Understand

This work addresses the problem of recognizing action categories in videos when no training examples are available.

  • The current state-of-the-art enables such a zero-shot recognition by learning universal mappings from videos to a semantic space, either trained on large-scale seen actions or on objects.
  • While effective, we find that universal action and object mappings are biased to specific regions in the semantic space.
  • These biases lead to a fundamental problem: many unseen action categories are simply never inferred during testing.

Reading the bibliography…