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Long video understanding is inherently challenging for vision-language models (VLMs) because of the extensive number of frames. With each video frame typically expanding into tens or hundreds of tokens, the limited context length of large…

计算机视觉与模式识别 · 计算机科学 2026-04-17 Zheyu Zhang , Ziqi Pang , Shixing Chen , Xiang Hao , Vimal Bhat , Yu-Xiong Wang

Long video understanding remains a fundamental challenge for multimodal large language models (MLLMs), particularly in tasks requiring precise temporal reasoning and event localization. Existing approaches typically adopt uniform frame…

计算机视觉与模式识别 · 计算机科学 2025-09-12 Chao Yuan , Yang Yang , Yehui Yang , Zach Cheng

Existing semi-supervised video anomaly detection (VAD) methods often struggle with detecting complex anomalies involving object interactions and generally lack explainability. To overcome these limitations, we propose a novel VAD framework…

计算机视觉与模式识别 · 计算机科学 2026-03-02 Furkan Mumcu , Michael J. Jones , Anoop Cherian , Yasin Yilmaz

Video anomaly detection (VAD) has been paid increasing attention due to its potential applications, its current dominant tasks focus on online detecting anomalies% at the frame level, which can be roughly interpreted as the binary or…

计算机视觉与模式识别 · 计算机科学 2024-02-29 Peng Wu , Jing Liu , Xiangteng He , Yuxin Peng , Peng Wang , Yanning Zhang

How to construct an interpretable autonomous driving decision-making system has become a focal point in academic research. In this study, we propose a novel approach that leverages large language models (LLMs) to generate executable,…

人工智能 · 计算机科学 2025-06-18 Fanzhi Zeng , Siqi Wang , Chuzhao Zhu , Li Li

Despite recent advances in Video Large Language Models (VideoLLMs), effectively understanding long-form videos remains a significant challenge. Perceiving lengthy videos containing thousands of frames poses substantial computational burden.…

计算机视觉与模式识别 · 计算机科学 2025-09-03 Linli Yao , Haoning Wu , Kun Ouyang , Yuanxing Zhang , Caiming Xiong , Bei Chen , Xu Sun , Junnan Li

Video Multimodal Large Language Models~(Video-MLLM) have achieved remarkable advancements in video understanding tasks. However, constrained by the context length limitation in the underlying LLMs, existing Video-MLLMs typically exhibit…

计算机视觉与模式识别 · 计算机科学 2025-08-05 Kuo Wang , Quanlong Zheng , Junlin Xie , Yanhao Zhang , Jinguo Luo , Haonan Lu , Liang Lin , Fan Zhou , Guanbin Li

Most of the existing methods for video understanding primarily focus on videos only lasting tens of seconds, with limited exploration of techniques for handling long videos. The increased number of frames in long videos poses two main…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Ziyu Ma , Chenhui Gou , Hengcan Shi , Bin Sun , Shutao Li , Hamid Rezatofighi , Jianfei Cai

Despite recent advances in Vision-Language Models (VLMs), long-video understanding remains a challenging problem. Although state-of-the-art long-context VLMs can process around 1000 input frames, they still struggle to effectively leverage…

机器学习 · 计算机科学 2025-07-04 Anurag Arnab , Ahmet Iscen , Mathilde Caron , Alireza Fathi , Cordelia Schmid

Most of the existing works in supervised spatio-temporal video super-resolution (STVSR) heavily rely on a large-scale external dataset consisting of paired low-resolution low-frame rate (LR-LFR)and high-resolution high-frame-rate (HR-HFR)…

图像与视频处理 · 电气工程与系统科学 2021-08-09 Akash Gupta , Padmaja Jonnalagedda , Bir Bhanu , Amit K. Roy-Chowdhury

Recent progress in reasoning capabilities of Multimodal Large Language Models(MLLMs) has highlighted their potential for performing complex video understanding tasks. However, in the domain of Video Anomaly Detection and Understanding…

计算机视觉与模式识别 · 计算机科学 2026-01-16 Chao Huang , Benfeng Wang , Wei Wang , Jie Wen , Li Shen , Wenqi Ren , Yong Xu , Xiaochun Cao

Modern video retrieval systems are expected to handle diverse tasks ranging from corpus-level retrieval, fine-grained moment localization to flexible multimodal querying. Specialized architectures achieve strong retrieval performance by…

计算机视觉与模式识别 · 计算机科学 2026-04-20 Shaunak Halbe , Bhagyashree Puranik , Jayakrishnan Unnikrishnan , Kushan Thakkar , Vimal Bhat , Toufiq Parag

We propose a novel supervised learning technique for summarizing videos by automatically selecting keyframes or key subshots. Casting the problem as a structured prediction problem on sequential data, our main idea is to use Long Short-Term…

计算机视觉与模式识别 · 计算机科学 2016-08-01 Ke Zhang , Wei-Lun Chao , Fei Sha , Kristen Grauman

Despite recent advances in video understanding, the capabilities of Large Video Language Models (LVLMs) to perform video-based causal reasoning remains underexplored, largely due to the absence of relevant and dedicated benchmarks for…

计算机视觉与模式识别 · 计算机科学 2025-05-14 Pritam Sarkar , Ali Etemad

Partially relevant video retrieval (PRVR) is a practical yet challenging task in text-to-video retrieval, where videos are untrimmed and contain much background content. The pursuit here is of both effective and efficient solutions to…

计算机视觉与模式识别 · 计算机科学 2025-04-16 Peipei Song , Long Zhang , Long Lan , Weidong Chen , Dan Guo , Xun Yang , Meng Wang

Automatic surgical workflow recognition in video is an essentially fundamental yet challenging problem for developing computer-assisted and robotic-assisted surgery. Existing approaches with deep learning have achieved remarkable…

机器学习 · 计算机科学 2020-04-27 Xueying Shi , Yueming Jin , Qi Dou , Pheng-Ann Heng

Recent progress in video-text retrieval has been driven largely by advancements in model architectures and training strategies. However, the representation learning capabilities of videotext retrieval models remain constrained by lowquality…

计算机视觉与模式识别 · 计算机科学 2025-02-05 Yimu Wang , Shuai Yuan , Bo Xue , Xiangru Jian , Wei Pang , Mushi Wang , Ning Yu

Frame selection is crucial due to high frame redundancy and limited context windows when applying Large Vision-Language Models (LVLMs) to long videos. Current methods typically select frames with high relevance to a given query, resulting…

计算机视觉与模式识别 · 计算机科学 2026-03-18 Wang Chen , Yuhui Zeng , Yongdong Luo , Tianyu Xie , Luojun Lin , Jiayi Ji , Yan Zhang , Xiawu Zheng

Current state-of-the-art video understanding methods typically struggle with two critical challenges: (1) the computational infeasibility of processing every frame in dense video content and (2) the difficulty in identifying semantically…

计算机视觉与模式识别 · 计算机科学 2025-09-22 Kehua Chen

Video-based multimodal large language models (Video-LLMs) possess significant potential for video understanding tasks. However, most Video-LLMs treat videos as a sequential set of individual frames, which results in insufficient…

计算机视觉与模式识别 · 计算机科学 2024-10-16 Xiaohan Lan , Yitian Yuan , Zequn Jie , Lin Ma