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Temporal Action Localization (TAL) is a challenging task in video understanding that aims to identify and localize actions within a video sequence. Recent studies have emphasized the importance of applying long-term temporal context…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Tuan N. Tang , Kwonyoung Kim , Kwanghoon Sohn

Spatio-Temporal Video Grounding (STVG) aims to localize target objects in videos based on natural language descriptions. Despite recent advances in Multimodal Large Language Models, a significant gap remains between current models and…

Computer Vision and Pattern Recognition · Computer Science 2025-11-24 Hong Gao , Jingyu Wu , Xiangkai Xu , Kangni Xie , Yunchen Zhang , Bin Zhong , Xurui Gao , Min-Ling Zhang

Text-to-video generation has advanced rapidly in visual fidelity, whereas standard methods still have limited ability to control the subject composition of generated scenes. Prior work shows that adding localized text control signals, such…

Computer Vision and Pattern Recognition · Computer Science 2025-10-20 Guofeng Zhang , Angtian Wang , Jacob Zhiyuan Fang , Liming Jiang , Haotian Yang , Bo Liu , Yiding Yang , Guang Chen , Longyin Wen , Alan Yuille , Chongyang Ma

Multi-modal language model has made advanced progress in vision and audio, but still faces significant challenges in dealing with complex reasoning tasks in the time series domain. The reasons are twofold. First, labels for multi-modal time…

Machine Learning · Computer Science 2025-03-10 Haochuan Zhang , Chunhua Yang , Jie Han , Liyang Qin , Xiaoli Wang

Recently, researchers have attempted to investigate the capability of LLMs in handling videos and proposed several video LLM models. However, the ability of LLMs to handle video grounding (VG), which is an important time-related video task…

Computer Vision and Pattern Recognition · Computer Science 2024-09-13 Wei Feng , Xin Wang , Hong Chen , Zeyang Zhang , Houlun Chen , Zihan Song , Yuwei Zhou , Yuekui Yang , Haiyang Wu , Wenwu Zhu

The task of temporally grounding language queries in videos is to temporally localize the best matched video segment corresponding to a given language (sentence). It requires certain models to simultaneously perform visual and linguistic…

Computer Vision and Pattern Recognition · Computer Science 2019-12-19 Jingwen Wang , Lin Ma , Wenhao Jiang

Video Question Answering (VideoQA) requires identifying sparse critical moments in long videos and reasoning about their causal relationships to answer semantically complex questions. While recent advances in multimodal learning have…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Xinxin Dong , Baoyun Peng , Haokai Ma , Yufei Wang , Zixuan Dong , Fei Hu , Xiaodong Wang

In this paper we present an approach for localizing steps of procedural activities in narrated how-to videos. To deal with the scarcity of labeled data at scale, we source the step descriptions from a language knowledge base (wikiHow)…

Computer Vision and Pattern Recognition · Computer Science 2023-06-07 Effrosyni Mavroudi , Triantafyllos Afouras , Lorenzo Torresani

Many video analysis tasks require temporal localization thus detection of content changes. However, most existing models developed for these tasks are pre-trained on general video action classification tasks. This is because large scale…

Computer Vision and Pattern Recognition · Computer Science 2021-03-29 Mengmeng Xu , Juan-Manuel Perez-Rua , Victor Escorcia , Brais Martinez , Xiatian Zhu , Li Zhang , Bernard Ghanem , Tao Xiang

In long-video understanding, conventional uniform frame sampling often fails to capture key visual evidence, leading to degraded performance and increased hallucinations. To address this, recent agentic thinking-with-videos paradigms have…

Computer Vision and Pattern Recognition · Computer Science 2026-05-25 Wenqi Liu , Yunxiao Wang , Shijie Ma , Meng Liu , Qile Su , Tianke Zhang , Haonan Fan , Changyi Liu , Kaiyu Jiang , Jiankang Chen , Kaiyu Tang , Bin Wen , Fan Yang , Tingting Gao , Han Li , Yinwei Wei , Xuemeng Song

With the development of video understanding, there is a proliferation of tasks for clip-level temporal video analysis, including temporal action detection (TAD), temporal action segmentation (TAS), and generic event boundary detection…

Computer Vision and Pattern Recognition · Computer Science 2024-09-30 Min Yang , Zichen Zhang , Limin Wang

Temporal Graph Clustering (TGC) is a new task with little attention, focusing on node clustering in temporal graphs. Compared with existing static graph clustering, it can find the balance between time requirement and space requirement…

Machine Learning · Computer Science 2026-01-21 Meng Liu , Ke Liang , Siwei Wang , Xingchen Hu , Sihang Zhou , Xinwang Liu

Video temporal grounding (VTG) aims to locate specific temporal segments from an untrimmed video based on a linguistic query. Most existing VTG models are trained on extensive annotated video-text pairs, a process that not only introduces…

Computer Vision and Pattern Recognition · Computer Science 2024-03-05 Yifang Xu , Yunzhuo Sun , Zien Xie , Benxiang Zhai , Sidan Du

This work presents a self-supervised learning framework named TeG to explore Temporal Granularity in learning video representations. In TeG, we sample a long clip from a video and a short clip that lies inside the long clip. We then extract…

Computer Vision and Pattern Recognition · Computer Science 2021-12-09 Rui Qian , Yeqing Li , Liangzhe Yuan , Boqing Gong , Ting Liu , Matthew Brown , Serge Belongie , Ming-Hsuan Yang , Hartwig Adam , Yin Cui

Video Temporal Grounding (TG) aims to temporally locate video segments matching a natural language description (a query) in a long video. While Vision-Language Models (VLMs) are effective at holistic semantic matching, they often struggle…

Computer Vision and Pattern Recognition · Computer Science 2025-08-11 Jian Hu , Zixu Cheng , Shaogang Gong , Isabel Guan , Jianye Hao , Jun Wang , Kun Shao

Temporal video grounding (TVG) aims to localize a target segment in a video according to a given sentence query. Though respectable works have made decent achievements in this task, they severely rely on abundant video-query paired data,…

Computer Vision and Pattern Recognition · Computer Science 2022-01-17 Daizong Liu , Xiaoye Qu , Yinzhen Wang , Xing Di , Kai Zou , Yu Cheng , Zichuan Xu , Pan Zhou

Temporal Sentence Grounding in Videos (TSGV) aims to detect the event timestamps described by the natural language query from untrimmed videos. This paper discusses the challenge of achieving efficient computation in TSGV models while…

Computer Vision and Pattern Recognition · Computer Science 2024-07-25 Renjie Liang , Yiming Yang , Hui Lu , Li Li

What makes a video task uniquely suited for videos, beyond what can be understood from a single image? Building on recent progress in self-supervised image-language models, we revisit this question in the context of video and language…

Computer Vision and Pattern Recognition · Computer Science 2022-06-06 Shyamal Buch , Cristóbal Eyzaguirre , Adrien Gaidon , Jiajun Wu , Li Fei-Fei , Juan Carlos Niebles

Temporally localizing user-queried events through natural language is a crucial capability for video models. Recent methods predominantly adapt video LLMs to generate event boundary timestamps for temporal localization tasks, which struggle…

Computer Vision and Pattern Recognition · Computer Science 2026-02-17 Zongshang Pang , Mayu Otani , Yuta Nakashima

Multimodal Large Language Models (MLLMs) have shown strong performance in video understanding tasks. However, they continue to struggle with long-form videos because of an inefficient perception of temporal intervals. Unlike humans, who can…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Chenglin Li , Qianglong Chen , fengtao , Yin Zhang