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Multi-modal large language models have demonstrated impressive performance across various tasks in different modalities. However, existing multi-modal models primarily emphasize capturing global information within each modality while…

Computer Vision and Pattern Recognition · Computer Science 2024-03-06 Zhaowei Li , Qi Xu , Dong Zhang , Hang Song , Yiqing Cai , Qi Qi , Ran Zhou , Junting Pan , Zefeng Li , Van Tu Vu , Zhida Huang , Tao Wang

While Video Large Language Models (Video-LLMs) have shown significant potential in multimodal understanding and reasoning tasks, how to efficiently select the most informative frames from videos remains a critical challenge. Existing…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Shihao Wang , Guo Chen , De-an Huang , Zhiqi Li , Minghan Li , Guilin Liu , Jose M. Alvarez , Lei Zhang , Zhiding Yu

Video temporal grounding aims to identify video segments within untrimmed videos that are most relevant to a given natural language query. Existing video temporal localization models rely on specific datasets for training and have high data…

Computer Vision and Pattern Recognition · Computer Science 2024-08-30 Minghang Zheng , Xinhao Cai , Qingchao Chen , Yuxin Peng , Yang Liu

Identifying key temporal intervals within long videos, known as temporal grounding (TG), is important to video understanding and reasoning tasks. In this paper, we introduce a new form of the temporal grounding problem,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Xiangrui Liu , Minghao Qin , Yan Shu , Zhengyang Liang , Yang Tian , Chen Jason Zhang , Bo Zhao , Zheng Liu

Video Temporal Grounding (VTG) aims to localize the video segment that corresponds to a natural language query, which requires a comprehensive understanding of complex temporal dynamics. Existing Vision-LMMs typically perceive temporal…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Chaohong Guo , Yihan He , Yongwei Nie , Fei Ma , Xuemiao Xu , Chengjiang Long

Video Temporal Grounding (VTG), the task of localizing video segments from text queries, struggles in open-world settings due to limited dataset scale and semantic diversity, causing performance gaps between common and rare concepts. To…

Computer Vision and Pattern Recognition · Computer Science 2026-04-29 Minghang Zheng , Zihao Yin , Yi Yang , Yuxin Peng , Yang Liu

In this paper, we study the problem of temporal video grounding (TVG), which aims to predict the starting/ending time points of moments described by a text sentence within a long untrimmed video. Benefiting from fine-grained 3D visual…

Computer Vision and Pattern Recognition · Computer Science 2023-10-05 Yimeng Zhang , Xin Chen , Jinghan Jia , Sijia Liu , Ke Ding

Temporal grounding aims to retrieve moments of the described event within an untrimmed video by a language query. Typically, existing methods assume annotations are precise and unique, yet one query may describe multiple moments in many…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Hao Zhou , Chongyang Zhang , Yanjun Chen , Chuanping Hu

Given some video-query pairs with untrimmed videos and sentence queries, temporal sentence grounding (TSG) aims to locate query-relevant segments in these videos. Although previous respectable TSG methods have achieved remarkable success,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Xiang Fang , Wanlong Fang , Changshuo Wang , Daizong Liu , Keke Tang , Jianfeng Dong , Pan Zhou , Beibei Li

Video temporal grounding (VTG) is typically tackled with dataset-specific models that transfer poorly across domains and query styles. Recent efforts to overcome this limitation have adapted large multimodal language models (MLLMs) to VTG,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Joungbin An , Agrim Jain , Kristen Grauman

Despite significant advancements in video large multimodal models (video-LMMs), achieving effective temporal grounding in long-form videos remains a challenge for existing models. To address this limitation, we propose Temporal Preference…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Rui Li , Xiaohan Wang , Yuhui Zhang , Orr Zohar , Zeyu Wang , Serena Yeung-Levy

In this paper, we consider a novel task, Spatio-Temporal Video Grounding for Multi-Form Sentences (STVG). Given an untrimmed video and a declarative/interrogative sentence depicting an object, STVG aims to localize the spatio-temporal tube…

Computer Vision and Pattern Recognition · Computer Science 2020-03-26 Zhu Zhang , Zhou Zhao , Yang Zhao , Qi Wang , Huasheng Liu , Lianli Gao

Visual grounding is a common vision task that involves grounding descriptive sentences to the corresponding regions of an image. Most existing methods use independent image-text encoding and apply complex hand-crafted modules or…

Computer Vision and Pattern Recognition · Computer Science 2024-10-29 Ming Dai , Lingfeng Yang , Yihao Xu , Zhenhua Feng , Wankou Yang

Spatio-temporal video grounding (STVG) aims to localize queried objects within dynamic video segments. Prevailing fully-trained approaches are notoriously data-hungry. However, gathering large-scale STVG data is exceptionally challenging:…

Computer Vision and Pattern Recognition · Computer Science 2026-04-15 Zanyi Wang , Fan Li , Dengyang Jiang , Liuzhuozheng Li , Yunhua Zhong , Guang Dai , Mengmeng Wang

Video inpainting involves modifying local regions within a video, ensuring spatial and temporal consistency. Most existing methods focus primarily on scene completion (i.e., filling missing regions) and lack the capability to insert new…

Computer Vision and Pattern Recognition · Computer Science 2025-03-17 Shiyuan Yang , Zheng Gu , Liang Hou , Xin Tao , Pengfei Wan , Xiaodong Chen , Jing Liao

Visual grounding aims to align visual information of specific regions of images with corresponding natural language expressions. Current visual grounding methods leverage pre-trained visual and language backbones independently to obtain…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Jiaxi Wang , Wenhui Hu , Xueyang Liu , Beihu Wu , Yuting Qiu , YingYing Cai

Visual dialogue is a challenging task since it needs to answer a series of coherent questions on the basis of understanding the visual environment. Previous studies focus on the implicit exploration of multimodal co-reference by implicitly…

Computation and Language · Computer Science 2021-09-20 Feilong Chen , Fandong Meng , Xiuyi Chen , Peng Li , Jie Zhou

Temporal grounding aims to localize a video moment which is semantically aligned with a given natural language query. Existing methods typically apply a detection or regression pipeline on the fused representation with the research focus on…

Computer Vision and Pattern Recognition · Computer Science 2021-12-16 Zhenzhi Wang , Limin Wang , Tao Wu , Tianhao Li , Gangshan Wu

Video temporal grounding is a critical video understanding task, which aims to localize moments relevant to a language description. The challenge of this task lies in distinguishing relevant and irrelevant moments. Previous methods focused…

Computer Vision and Pattern Recognition · Computer Science 2025-04-04 Xiaolong Sun , Le Wang , Sanping Zhou , Liushuai Shi , Kun Xia , Mengnan Liu , Yabing Wang , Gang Hua

Temporal Video Grounding (TVG) aims to localize video segments corresponding to a given textual query, which often describes human actions. However, we observe that current methods, usually optimizing for high temporal…

Artificial Intelligence · Computer Science 2026-02-16 Zhaoyu Chen , Hongnan Lin , Yongwei Nie , Fei Ma , Xuemiao Xu , Fei Yu , Chengjiang Long