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Video Temporal Grounding (VTG), which aims to localize video clips corresponding to natural language queries, is a fundamental yet challenging task in video understanding. Existing Transformer-based methods often suffer from redundant…

Computer Vision and Pattern Recognition · Computer Science 2026-01-28 Zhiyi Zhu , Xiaoyu Wu , Zihao Liu , Linlin Yang

Large language models have demonstrated impressive performance when integrated with vision models even enabling video understanding. However, evaluating video models presents its own unique challenges, for which several benchmarks have been…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Daniel Cores , Michael Dorkenwald , Manuel Mucientes , Cees G. M. Snoek , Yuki M. Asano

Video Temporal Grounding (VTG) aims to ground specific segments within an untrimmed video corresponding to the given natural language query. Existing VTG methods largely depend on supervised learning and extensive annotated data, which is…

Multimedia · Computer Science 2024-10-18 Mengxue Qu , Xiaodong Chen , Wu Liu , Alicia Li , Yao Zhao

Understanding abnormal events in videos is a vital and challenging task that has garnered significant attention in a wide range of applications. Although current video understanding Multi-modal Large Language Models (MLLMs) are capable of…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Yingxian Chen , Jiahui Liu , Ruidi Fan , Yanwei Li , Chirui Chang , Shizhen Zhao , Wilton W. T. Fok , Xiaojuan Qi , Yik-Chung Wu

Video temporal understanding is crucial for multimodal large language models (MLLMs) to reason over events in videos. Despite recent advances in general video understanding, current MLLMs still struggle with fine-grained temporal reasoning.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Fuwen Luo , Shengfeng Lou , Chi Chen , Ziyue Wang , Chenliang Li , Weizhou Shen , Jiyue Guo , Peng Li , Ming Yan , Ji Zhang , Fei Huang , Yang Liu

Video Temporal Grounding (VTG), which aims to ground target clips from videos (such as consecutive intervals or disjoint shots) according to custom language queries (e.g., sentences or words), is key for video browsing on social media. Most…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Kevin Qinghong Lin , Pengchuan Zhang , Joya Chen , Shraman Pramanick , Difei Gao , Alex Jinpeng Wang , Rui Yan , Mike Zheng Shou

With the rapid development of Multi-modal Large Language Models (MLLMs), a number of diagnostic benchmarks have recently emerged to evaluate the comprehension capabilities of these models. However, most benchmarks predominantly assess…

Computer Vision and Pattern Recognition · Computer Science 2024-05-24 Kunchang Li , Yali Wang , Yinan He , Yizhuo Li , Yi Wang , Yi Liu , Zun Wang , Jilan Xu , Guo Chen , Ping Luo , Limin Wang , Yu Qiao

Video Large Language Models (Video-LLMs) have demonstrated remarkable capabilities in coarse-grained video understanding, however, they struggle with fine-grained temporal grounding. In this paper, we introduce Grounded-VideoLLM, a novel…

Computer Vision and Pattern Recognition · Computer Science 2025-08-22 Haibo Wang , Zhiyang Xu , Yu Cheng , Shizhe Diao , Yufan Zhou , Yixin Cao , Qifan Wang , Weifeng Ge , Lifu Huang

Inducing reasoning in multimodal large language models (MLLMs) is critical for achieving human-level perception and understanding. Existing methods mainly leverage LLM reasoning to analyze parsed visuals, often limited by static perception…

Computer Vision and Pattern Recognition · Computer Science 2025-09-26 Ziang Yan , Xinhao Li , Yinan He , Zhengrong Yue , Xiangyu Zeng , Yali Wang , Yu Qiao , Limin Wang , Yi Wang

Spatio-temporal video grounding (STVG) aims at localizing the spatio-temporal tube of a video, as specified by the input text query. In this paper, we utilize multimodal large language models (MLLMs) to explore a zero-shot solution in STVG.…

Computer Vision and Pattern Recognition · Computer Science 2025-09-19 Zaiquan Yang , Yuhao Liu , Gerhard Hancke , Rynson W. H. Lau

Spatio-temporal video grounding (STVG) requires localizing a target object in untrimmed videos both temporally and spatially from natural language descriptions. Despite their strong language understanding, multimodal large language models…

Computer Vision and Pattern Recognition · Computer Science 2025-11-27 Xin Gu , Haoji Zhang , Qihang Fan , Jingxuan Niu , Zhipeng Zhang , Libo Zhang , Guang Chen , Fan Chen , Longyin Wen , Sijie Zhu

Video Large Language Models (Video LLMs) have achieved impressive performance on video-and-language tasks, such as video question answering. However, most existing Video LLMs neglect temporal information in video data, leading to struggles…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Zi-Yuan Hu , Yiwu Zhong , Shijia Huang , Michael R. Lyu , Liwei Wang

Multimodal Large Language Models (MLLMs) have shown strong performance on Video Temporal Grounding (VTG). However, their coarse recognition capabilities are insufficient for fine-grained temporal understanding, making task-specific…

Computer Vision and Pattern Recognition · Computer Science 2026-03-27 Jiwook Han , Geo Ahn , Youngrae Kim , Jinwoo Choi

In recent years, video question answering based on multimodal large language models (MLLM) has garnered considerable attention, due to the benefits from the substantial advancements in LLMs. However, these models have a notable deficiency…

Computer Vision and Pattern Recognition · Computer Science 2025-10-17 Jinglei Zhang , Yuanfan Guo , Rolandos Alexandros Potamias , Jiankang Deng , Hang Xu , Chao Ma

Large Language Models (LLMs) have showcased impressive capabilities in text comprehension and generation, prompting research efforts towards video LLMs to facilitate human-AI interaction at the video level. However, how to effectively…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Ruyang Liu , Chen Li , Haoran Tang , Yixiao Ge , Ying Shan , Ge Li

Large language models (LLMs) excel at retrieving information from lengthy text, but their vision-language counterparts (VLMs) face difficulties with hour-long videos, especially for temporal grounding. Specifically, these VLMs are…

Computer Vision and Pattern Recognition · Computer Science 2024-11-25 Tanveer Hannan , Md Mohaiminul Islam , Jindong Gu , Thomas Seidl , Gedas Bertasius

Video understanding represents the most challenging frontier in computer vision, requiring models to reason about complex spatiotemporal relationships, long-term dependencies, and multimodal evidence. The recent emergence of Video-Large…

The video reasoning ability of multimodal large language models (MLLMs) is crucial for downstream tasks like video question answering and temporal grounding. While recent approaches have explored text-based chain-of-thought (CoT) reasoning…

Computer Vision and Pattern Recognition · Computer Science 2025-09-04 Haoji Zhang , Xin Gu , Jiawen Li , Chixiang Ma , Sule Bai , Chubin Zhang , Bowen Zhang , Zhichao Zhou , Dongliang He , Yansong Tang

Video large language models (Video-LLMs) can temporally ground language queries and retrieve video moments. Yet, such temporal comprehension capabilities are neither well-studied nor understood. So we conduct a study on prediction…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Minjoon Jung , Junbin Xiao , Byoung-Tak Zhang , Angela Yao

Large language models (LLMs) have shown remarkable text understanding capabilities, which have been extended as Video LLMs to handle video data for comprehending visual details. However, existing Video LLMs can only provide a coarse…

Computer Vision and Pattern Recognition · Computer Science 2023-12-01 Bin Huang , Xin Wang , Hong Chen , Zihan Song , Wenwu Zhu