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Existing temporal action detection (TAD) methods rely on large training data including segment-level annotations, limited to recognizing previously seen classes alone during inference. Collecting and annotating a large training set for each…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Sauradip Nag , Xiatian Zhu , Yi-Zhe Song , Tao Xiang

Temporally localizing actions in a video is a fundamental challenge in video understanding. Most existing approaches have often drawn inspiration from image object detection and extended the advances, e.g., SSD and Faster R-CNN, to produce…

Computer Vision and Pattern Recognition · Computer Science 2019-09-10 Fuchen Long , Ting Yao , Zhaofan Qiu , Xinmei Tian , Jiebo Luo , Tao Mei

Meta-learning has emerged as a trending technique to tackle few-shot text classification and achieve state-of-the-art performance. However, the performance of existing approaches heavily depends on the inter-class variance of the support…

Computation and Language · Computer Science 2023-06-12 Shuo Lei , Xuchao Zhang , Jianfeng He , Fanglan Chen , Chang-Tien Lu

Temporal Action Localization (TAL) requires identifying both the boundaries and categories of actions in untrimmed videos. While vision-language models (VLMs) offer rich semantics to complement visual evidence, existing approaches tend to…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Jiaqi Li , Guangming Wang , Shuntian Zheng , Minzhe Ni , Xiaoman Lu , Guanghui Ye , Yu Guan

We present a novel method, SALAD, for the challenging vision task of adapting a pre-trained "source" domain network to a "target" domain, with a small budget for annotation in the "target" domain and a shift in the label space. Further, the…

Computer Vision and Pattern Recognition · Computer Science 2025-02-13 Divya Kothandaraman , Sumit Shekhar , Abhilasha Sancheti , Manoj Ghuhan , Tripti Shukla , Dinesh Manocha

Temporal Action Localization (TAL) methods typically operate on top of feature sequences from a frozen snippet encoder that is pretrained with the Trimmed Action Classification (TAC) tasks, resulting in a task discrepancy problem. While…

Computer Vision and Pattern Recognition · Computer Science 2022-11-14 Hyolim Kang , Hanjung Kim , Joungbin An , Minsu Cho , Seon Joo Kim

Temporal action localization (TAL) is a task of identifying a set of actions in a video, which involves localizing the start and end frames and classifying each action instance. Existing methods have addressed this task by using predefined…

Computer Vision and Pattern Recognition · Computer Science 2022-07-22 Tae-Kyung Kang , Gun-Hee Lee , Seong-Whan Lee

Autonomous inspection in hazardous environments requires AI agents that can interpret high-level goals and execute precise control. A key capability for such agents is spatial grounding, for example when a drone must center a detected…

Artificial Intelligence · Computer Science 2025-11-25 Xian Yeow Lee , Lasitha Vidyaratne , Gregory Sin , Ahmed Farahat , Chetan Gupta

Reinforcement Learning (RL) has achieved significant success in solving single-goal tasks. However, uniform goal selection often results in sample inefficiency in multi-goal settings where agents must learn a universal goal-conditioned…

Machine Learning · Computer Science 2025-12-30 Gaurav Chaudhary , Laxmidhar Behera

The main challenge in domain generalization (DG) is to handle the distribution shift problem that lies between the training and test data. Recent studies suggest that test-time training (TTT), which adapts the learned model with test data,…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Liang Chen , Yong Zhang , Yibing Song , Ying Shan , Lingqiao Liu

Temporal action detection (TAD) is an important yet challenging task in video analysis. Most existing works draw inspiration from image object detection and tend to reformulate it as a proposal generation - classification problem. However,…

Computer Vision and Pattern Recognition · Computer Science 2022-03-04 Chen Zhao , Merey Ramazanova , Mengmeng Xu , Bernard Ghanem

Temporal action detection (TAD) involves the localization and classification of action instances within untrimmed videos. While standard TAD follows fully supervised learning with closed-set setting on large training data, recent zero-shot…

Computer Vision and Pattern Recognition · Computer Science 2023-11-08 Thinh Phan , Khoa Vo , Duy Le , Gianfranco Doretto , Donald Adjeroh , Ngan Le

Existing temporal action detection (TAD) methods rely on a large number of training data with segment-level annotations. Collecting and annotating such a training set is thus highly expensive and unscalable. Semi-supervised TAD (SS-TAD)…

Computer Vision and Pattern Recognition · Computer Science 2022-07-15 Sauradip Nag , Xiatian Zhu , Yi-Zhe Song , Tao Xiang

Temporal Action Localization (TAL) involves localizing and classifying action snippets in an untrimmed video. The emergence of large video foundation models has led RGB-only video backbones to outperform previous methods needing both RGB…

Computer Vision and Pattern Recognition · Computer Science 2024-12-06 Akshita Gupta , Gaurav Mittal , Ahmed Magooda , Ye Yu , Graham W. Taylor , Mei Chen

Audio-Visual Event Localization (AVEL) is the task of temporally localizing and classifying \emph{audio-visual events}, i.e., events simultaneously visible and audible in a video. In this paper, we solve AVEL in a weakly-supervised setting,…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 Kalyan Ramakrishnan

Weakly supervised object localization (WSOL) aims at predicting object locations in an image using only image-level category labels. Common challenges that image classification models encounter when localizing objects are, (a) they tend to…

Computer Vision and Pattern Recognition · Computer Science 2022-04-15 Saurav Gupta , Sourav Lakhotia , Abhay Rawat , Rahul Tallamraju

Weakly supervised video object localization (WSVOL) allows locating object in videos using only global video tags such as object class. State-of-art methods rely on multiple independent stages, where initial spatio-temporal proposals are…

Computer Vision and Pattern Recognition · Computer Science 2022-10-25 Soufiane Belharbi , Ismail Ben Ayed , Luke McCaffrey , Eric Granger

Weakly-supervised temporal action localization (WS-TAL) aims to localize actions in untrimmed videos with only video-level labels. Most existing models follow the "localization by classification" procedure: locate temporal regions…

Computer Vision and Pattern Recognition · Computer Science 2021-07-29 Can Zhang , Meng Cao , Dongming Yang , Jie Chen , Yuexian Zou

Autism Spectrum Disorder (ASD) presents significant challenges in early diagnosis and intervention, impacting children and their families. With prevalence rates rising, there is a critical need for accessible and efficient screening tools.…

Computer Vision and Pattern Recognition · Computer Science 2024-04-10 Halil Ismail Helvaci , Sen-ching Samson Cheung , Chen-Nee Chuah , Sally Ozonoff

This paper studies how to introduce viewpoint-invariant feature representations that can help action recognition and detection. Although we have witnessed great progress of action recognition in the past decade, it remains challenging yet…

Computer Vision and Pattern Recognition · Computer Science 2020-12-07 Junwei Liang , Liangliang Cao , Xuehan Xiong , Ting Yu , Alexander Hauptmann