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Multimodal Large Language Models (MLLMs) have shown strong performance on video question answering, but their application to long-form videos is constrained by limited context length and computational cost, making keyframe sampling…

Computer Vision and Pattern Recognition · Computer Science 2026-04-02 Yiheng Wang , Lichen Zhu , Yueqian Lin , Yudong Liu , Jingyang Zhang , Hai "Helen" Li , Yiran Chen

Multimodal large language models have recently achieved remarkable progress in video question answering (VideoQA) by jointly processing visual, textual, and audio information. However, it remains unclear which video representations are most…

Information Retrieval · Computer Science 2025-10-15 Zhi Li , Yanan Wang , Hao Niu , Julio Vizcarra , Masato Taya

This paper addresses automatic summarization and search in visual data comprising of videos, live streams and image collections in a unified manner. In particular, we propose a framework for multi-faceted summarization which extracts…

Computer Vision and Pattern Recognition · Computer Science 2017-04-06 Anurag Sahoo , Vishal Kaushal , Khoshrav Doctor , Suyash Shetty , Rishabh Iyer , Ganesh Ramakrishnan

Large Video Language Models (LVLMs) have rapidly emerged as the focus of multimedia AI research. Nonetheless, when confronted with lengthy videos, these models struggle: their temporal windows are narrow, and they fail to notice…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Zongsheng Cao , Yangfan He , Anran Liu , Feng Chen , Zepeng Wang , Jun Xie

Video object segmentation is challenging yet important in a wide variety of applications for video analysis. Recent works formulate video object segmentation as a prediction task using deep nets to achieve appealing state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2018-09-05 Yuan-Ting Hu , Jia-Bin Huang , Alexander G. Schwing

Video retrieval is becoming increasingly important owing to the rapid emergence of videos on the Internet. The dominant paradigm for video retrieval learns video-text representations by pushing the distance between the similarity of…

Computer Vision and Pattern Recognition · Computer Science 2023-03-10 Feng He , Qi Wang , Zhifan Feng , Wenbin Jiang , Yajuan Lv , Yong zhu , Xiao Tan

The exponential growth of video content has created an urgent need for efficient multimodal moment retrieval systems. However, existing approaches face three critical challenges: (1) fixed-weight fusion strategies fail across cross modal…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Toan Le Ngo Thanh , Phat Ha Huu , Tan Nguyen Dang Duy , Thong Nguyen Le Minh , Anh Nguyen Nhu Tinh

This paper tackles a recently proposed Video Corpus Moment Retrieval task. This task is essential because advanced video retrieval applications should enable users to retrieve a precise moment from a large video corpus. We propose a novel…

Multimedia · Computer Science 2021-09-22 Zhijian Hou , Chong-Wah Ngo , Wing Kwong Chan

Understanding hour-long videos with multi-modal large language models (MM-LLMs) enriches the landscape of human-centered AI applications. However, for end-to-end video understanding with LLMs, uniformly sampling video frames results in LLMs…

Computer Vision and Pattern Recognition · Computer Science 2025-10-08 Xinye Cao , Hongcan Guo , Jiawen Qian , Guoshun Nan , Chao Wang , Yuqi Pan , Tianhao Hou , Xiaojuan Wang , Yutong Gao

Current video-language models struggle with long-video understanding due to limited context lengths and reliance on sparse frame subsampling, often leading to information loss. This paper introduces $\infty$-Video, which can process…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Saul Santos , António Farinhas , Daniel C. McNamee , André F. T. Martins

We present a content-based retrieval method for long surveillance videos both for wide-area (Airborne) as well as near-field imagery (CCTV). Our goal is to retrieve video segments, with a focus on detecting objects moving on routes, that…

Computer Vision and Pattern Recognition · Computer Science 2014-05-02 Greg Castanon , Mohamed Elgharib , Venkatesh Saligrama , Pierre-Marc Jodoin

This paper attacks the challenging problem of zero-example video retrieval. In such a retrieval paradigm, an end user searches for unlabeled videos by ad-hoc queries described in natural language text with no visual example provided. Given…

Computer Vision and Pattern Recognition · Computer Science 2019-03-20 Jianfeng Dong , Xirong Li , Chaoxi Xu , Shouling Ji , Yuan He , Gang Yang , Xun Wang

Many studies focus on improving pretraining or developing new backbones in text-video retrieval. However, existing methods may suffer from the learning and inference bias issue, as recent research suggests in other text-video-related tasks.…

Computer Vision and Pattern Recognition · Computer Science 2023-09-19 Burak Satar , Hongyuan Zhu , Hanwang Zhang , Joo Hwee Lim

Most video captioning models are designed to process short video clips of few seconds and output text describing low-level visual concepts (e.g., objects, scenes, atomic actions). However, most real-world videos last for minutes or hours…

Computer Vision and Pattern Recognition · Computer Science 2024-05-20 Md Mohaiminul Islam , Ngan Ho , Xitong Yang , Tushar Nagarajan , Lorenzo Torresani , Gedas Bertasius

Video moment retrieval is to search the moment that is most relevant to the given natural language query. Existing methods are mostly trained in a fully-supervised setting, which requires the full annotations of temporal boundary for each…

Computer Vision and Pattern Recognition · Computer Science 2020-01-16 Zhijie Lin , Zhou Zhao , Zhu Zhang , Qi Wang , Huasheng Liu

Video generation has witnessed great success recently, but their application in generating long videos still remains challenging due to the difficulty in maintaining the temporal consistency of generated videos and the high memory cost…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Wei Feng , Xin Wang , Hong Chen , Zeyang Zhang , Wenwu Zhu

Multimodal referring segmentation aims to segment target objects in visual scenes, such as images, videos, and 3D scenes, based on referring expressions in text or audio format. This task plays a crucial role in practical applications…

Computer Vision and Pattern Recognition · Computer Science 2025-08-06 Henghui Ding , Song Tang , Shuting He , Chang Liu , Zuxuan Wu , Yu-Gang Jiang

Long Video Question-Answering (LVQA) presents a significant challenge for Multi-modal Large Language Models (MLLMs) due to immense context and overloaded information, which could also lead to prohibitive memory consumption. While existing…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Henghui Du , Chunjie Zhang , Xi Chen , Chang Zhou , Di Hu

While multi-modal learning has advanced significantly, current approaches often create inconsistencies in representation and reasoning of different modalities. We propose UMaT, a theoretically-grounded framework that unifies visual and…

Computer Vision and Pattern Recognition · Computer Science 2025-06-11 Xiaowei Bi , Zheyuan Xu

Fine-grained text-to-image retrieval aims to retrieve a fine-grained target image with a given text query. Existing methods typically assume that each training image is accurately depicted by its textual descriptions. However, textual…

Computer Vision and Pattern Recognition · Computer Science 2025-04-11 Zehong Ma , Hao Chen , Wei Zeng , Limin Su , Shiliang Zhang
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