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We propose MR. Video, an agentic long video understanding framework that demonstrates the simple yet effective MapReduce principle for processing long videos: (1) Map: independently and densely perceiving short video clips, and (2) Reduce:…

Computer Vision and Pattern Recognition · Computer Science 2025-04-23 Ziqi Pang , Yu-Xiong Wang

Video Large Language Models (VideoLLMs) excel at video understanding tasks where outputs are textual, such as Video Question Answering and Video Captioning. However, they underperform specialized embedding-based models in Retrieval tasks,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-15 Rohit Gupta , Jayakrishnan Unnikrishnan , Fan Fei , Sheng Liu , Son Tran , Mubarak Shah

Video understanding, including video captioning and retrieval, is still a great challenge for video-language models (VLMs). The existing video retrieval and caption benchmarks only include short descriptions, limits their ability of…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Yifan Xu , Xinhao Li , Yichun Yang , Desen Meng , Rui Huang , Limin Wang

Motivated by the increasing need of saving search effort by obtaining relevant video clips instead of whole videos, we propose a new task, named Semantic Video Moments Retrieval at scale (SVMR), which aims at finding relevant videos coupled…

Computer Vision and Pattern Recognition · Computer Science 2022-10-18 Na Li

Recent advances in test-time optimization have led to remarkable reasoning capabilities in Large Language Models (LLMs), enabling them to solve highly complex problems in math and coding. However, the reasoning capabilities of multimodal…

Computer Vision and Pattern Recognition · Computer Science 2026-04-16 Ce Zhang , Yan-Bo Lin , Ziyang Wang , Mohit Bansal , Gedas Bertasius

Video Moment Retrieval (MR) aims to localize moments within a video based on a given natural language query. Given the prevalent use of platforms like YouTube for information retrieval, the demand for MR techniques is significantly growing.…

Computer Vision and Pattern Recognition · Computer Science 2026-02-27 Seojeong Park , Jiho Choi , Kyungjune Baek , Hyunjung Shim

In this paper, we rethink sparse lexical representations for image retrieval. By utilizing multi-modal large language models (M-LLMs) that support visual prompting, we can extract image features and convert them into textual data, enabling…

Computer Vision and Pattern Recognition · Computer Science 2024-08-30 Kengo Nakata , Daisuke Miyashita , Youyang Ng , Yasuto Hoshi , Jun Deguchi

Language models (LMs) and their extension, vision-language models (VLMs), have achieved remarkable performance across various tasks. However, they still struggle with complex reasoning tasks that require multimodal or multilingual…

Machine Learning · Computer Science 2025-07-09 Wenyi Wu , Zixuan Song , Kun Zhou , Yifei Shao , Zhiting Hu , Biwei Huang

Large Vision-Language Models (LVLMs) demonstrate remarkable performance in short-video tasks such as video question answering, but struggle in long-video understanding. The linear frame sampling strategy, conventionally used by LVLMs, fails…

Computer Vision and Pattern Recognition · Computer Science 2025-06-30 Joao Pereira , Vasco Lopes , David Semedo , Joao Neves

Streaming video understanding requires models to robustly encode, store, and retrieve information from a continuous video stream to support accurate video question answering (VQA). Existing state-of-the-art approaches rely on key-value…

Computer Vision and Pattern Recognition · Computer Science 2026-02-23 Vatsal Agarwal , Saksham Suri , Matthew Gwilliam , Pulkit Kumar , Abhinav Shrivastava

Multimodal Large Language Models (MLLMs) are evaluated on various benchmarks, such as image captioning, visual question answering, and reasoning. However, many of these benchmarks include overly simple or uninformative samples, complicating…

Large language models (LLMs) have demonstrated exceptional capabilities in text understanding, which has paved the way for their expansion into video LLMs (Vid-LLMs) to analyze video data. However, current Vid-LLMs struggle to…

Computer Vision and Pattern Recognition · Computer Science 2026-02-04 Ming Nie , Dan Ding , Chunwei Wang , Yuanfan Guo , Jianhua Han , Hang Xu , Li Zhang

Video Camouflaged Object Detection (VCOD) aims to segment objects whose appearances closely resemble their surroundings, posing a challenging and emerging task. Existing vision models often struggle in such scenarios due to the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Yuang Feng , Shuyong Gao , Fuzhen Yan , Yicheng Song , Lingyi Hong , Junjie Hu , Wenqiang Zhang

Providing high-quality item recall for text queries is crucial in large-scale e-commerce search systems. Current Embedding-based Retrieval Systems (ERS) embed queries and items into a shared low-dimensional space, but uni-modality ERS rely…

Information Retrieval · Computer Science 2024-08-28 Hao Jiang , Haoxiang Zhang , Qingshan Hou , Chaofeng Chen , Weisi Lin , Jingchang Zhang , Annan Wang

The rapid advancement of Multimodal Large Language Models (MLLMs) has led to remarkable performances across various domains. However, this progress is accompanied by a substantial surge in the resource consumption of these models. We…

Computation and Language · Computer Science 2024-12-19 Dingjie Song , Wenjun Wang , Shunian Chen , Xidong Wang , Michael Guan , Benyou Wang

Most current video MLLMs rely on uniform frame sampling and image-level encoders, resulting in inefficient data processing and limited motion awareness. To address these challenges, we introduce EMA, an Efficient Motion-Aware video MLLM…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Zijia Zhao , Yuqi Huo , Tongtian Yue , Longteng Guo , Haoyu Lu , Bingning Wang , Weipeng Chen , Jing Liu

Multimodal Large Language Models (MLLMs) have demonstrated significant success in visual understanding tasks. However, challenges persist in adapting these models for video comprehension due to the large volume of data and temporal…

Computer Vision and Pattern Recognition · Computer Science 2025-07-23 Shaojie Zhang , Jiahui Yang , Jianqin Yin , Zhenbo Luo , Jian Luan

This paper presents VideoStreaming, an advanced vision-language large model (VLLM) for video understanding, that capably understands arbitrary-length video with a constant number of video tokens streamingly encoded and adaptively selected.…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Rui Qian , Xiaoyi Dong , Pan Zhang , Yuhang Zang , Shuangrui Ding , Dahua Lin , Jiaqi Wang

Video semantic segmentation (VSS) is a computationally expensive task due to the per-frame prediction for videos of high frame rates. In recent work, compact models or adaptive network strategies have been proposed for efficient VSS.…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Yubin Hu , Yuze He , Yanghao Li , Jisheng Li , Yuxing Han , Jiangtao Wen , Yong-Jin Liu

Long videos contain a vast amount of information, making video-text retrieval an essential and challenging task in multimodal learning. However, existing benchmarks suffer from limited video duration, low-quality captions, and coarse…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Qifeng Cai , Hao Liang , Zhaoyang Han , Hejun Dong , Meiyi Qiang , Ruichuan An , Quanqing Xu , Bin Cui , Wentao Zhang