Search Results for author: Kun Xia

Found 4 papers, 1 papers with code

Learning Discriminative Spatio-temporal Representations for Semi-supervised Action Recognition

no code implementations25 Apr 2024 Yu Wang, Sanping Zhou, Kun Xia, Le Wang

Semi-supervised action recognition aims to improve spatio-temporal reasoning ability with a few labeled data in conjunction with a large amount of unlabeled data.

Action Recognition Contrastive Learning

Boosting Semi-Supervised Temporal Action Localization by Learning from Non-Target Classes

no code implementations17 Mar 2024 Kun Xia, Le Wang, Sanping Zhou, Gang Hua, Wei Tang

To this end, we first devise innovative strategies to adaptively select high-quality positive and negative classes from the label space, by modeling both the confidence and rank of a class in relation to those of the target class.

Temporal Action Localization

Learning from Noisy Pseudo Labels for Semi-Supervised Temporal Action Localization

1 code implementation ICCV 2023 Kun Xia, Le Wang, Sanping Zhou, Gang Hua, Wei Tang

To this end, we propose a unified framework, termed Noisy Pseudo-Label Learning, to handle both location biases and category errors.

Pseudo Label Temporal Action Localization

Learning to Refactor Action and Co-occurrence Features for Temporal Action Localization

no code implementations CVPR 2022 Kun Xia, Le Wang, Sanping Zhou, Nanning Zheng, Wei Tang

The main challenge of Temporal Action Localization is to retrieve subtle human actions from various co-occurring ingredients, e. g., context and background, in an untrimmed video.

Temporal Action Localization

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