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Abstract
We propose a novel approach to few-shot action recognition, finding temporally-corresponding frame tuples between the query and videos in the support set. Distinct from previous few-shot works, we construct class prototypes using the CrossTransformer attention mechanism to observe relevant sub-sequences of all support videos, rather than using class averages or single best matches. Video representations are formed from ordered tuples of varying numbers of frames, which allows sub-sequences of actions at different speeds and temporal offsets to be compared.
Our proposed Temporal-Relational CrossTransformers (TRX) achieve state-of-the-art results on few-shot splits of Kinetics, Something-Something V2 (SSv2), HMDB51 and UCF101. Importantly, our method outperforms prior work on SSv2 by a wide margin (12%) due to the its ability to model temporal relations. A detailed ablation showcases the importance of matching to multiple support set videos and learning higher-order relational CrossTransformers.
Our proposed Temporal-Relational CrossTransformers (TRX) achieve state-of-the-art results on few-shot splits of Kinetics, Something-Something V2 (SSv2), HMDB51 and UCF101. Importantly, our method outperforms prior work on SSv2 by a wide margin (12%) due to the its ability to model temporal relations. A detailed ablation showcases the importance of matching to multiple support set videos and learning higher-order relational CrossTransformers.
Original language | English |
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Number of pages | 8 |
Publication status | Published - 25 Jun 2021 |
Event | Computer Vision and Pattern Recognition 2021 - Online Duration: 19 Jun 2021 → 25 Jun 2021 http://cvpr2021.thecvf.com/ |
Conference
Conference | Computer Vision and Pattern Recognition 2021 |
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Abbreviated title | CVPR |
Period | 19/06/21 → 25/06/21 |
Internet address |
Structured keywords
- SPHERE
- Digital Health
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Dive into the research topics of 'Temporal-Relational CrossTransformers for Few-Shot Action Recognition'. Together they form a unique fingerprint.Projects
- 1 Active
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UMPIRE: United Model for the Perception of Interactions for visual Recognition
1/02/20 → 31/01/25
Project: Research
Equipment
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HPC (High Performance Computing) Facility
Sadaf R Alam (Manager), Steven A Chapman (Manager), Polly E Eccleston (Other), Simon H Atack (Other) & D A G Williams (Manager)
Facility/equipment: Facility