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Arbitrary-scale video super-resolution (AVSR) aims to enhance the resolution of video frames, potentially at various scaling factors, which presents several challenges regarding spatial detail reproduction, temporal consistency, and…

计算机视觉与模式识别 · 计算机科学 2025-11-07 Wei Shang , Wanying Zhang , Shuhang Gu , Pengfei Zhu , Qinghua Hu , Dongwei Ren

Multi-modal retrieval is an important problem for many applications, such as recommendation and search. Current benchmarks and even datasets are often manually constructed and consist of mostly clean samples where all modalities are…

计算机视觉与模式识别 · 计算机科学 2022-10-21 Laura Hanu , James Thewlis , Yuki M. Asano , Christian Rupprecht

In this paper, we consider the task of space-time video super-resolution (ST-VSR), namely, expanding a given source video to a higher frame rate and resolution simultaneously. However, most existing schemes either consider a fixed…

计算机视觉与模式识别 · 计算机科学 2023-02-28 Yuantong Zhang , Daiqin Yang , Zhenzhong Chen , Wenpeng Ding

Video-Text Retrieval (VTR) is a crucial multi-modal task in an era of massive video-text data on the Internet. A plethora of work characterized by using a two-stream Vision-Language model architecture that learns a joint representation of…

计算机视觉与模式识别 · 计算机科学 2026-01-23 Gengyuan Zhang , Jisen Ren , Jindong Gu , Volker Tresp

Given a text query, partially relevant video retrieval (PRVR) aims to retrieve untrimmed videos containing relevant moments, wherein event modeling is crucial for partitioning the video into smaller temporal events that partially correspond…

计算机视觉与模式识别 · 计算机科学 2025-06-04 Sa Zhu , Huashan Chen , Wanqian Zhang , Jinchao Zhang , Zexian Yang , Xiaoshuai Hao , Bo Li

We address the problem of extracting key steps from unlabeled procedural videos, motivated by the potential of Augmented Reality (AR) headsets to revolutionize job training and performance. We decompose the problem into two steps:…

计算机视觉与模式识别 · 计算机科学 2023-09-12 Anshul Shah , Benjamin Lundell , Harpreet Sawhney , Rama Chellappa

Partially Relevant Video Retrieval (PRVR) aims to retrieve the target video that is partially relevant to the text query. The primary challenge in PRVR arises from the semantic asymmetry between textual and visual modalities, as videos…

计算机视觉与模式识别 · 计算机科学 2025-12-01 Junlong Ren , Gangjian Zhang , Yu Hu , Jian Shu , Hui Xiong , Hao Wang

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

Temporal sentence localization in videos (TSLV) aims to retrieve the most interested segment in an untrimmed video according to a given sentence query. However, almost of existing TSLV approaches suffer from the same limitations: (1) They…

计算机视觉与模式识别 · 计算机科学 2023-03-16 Daizong Liu , Pan Zhou

Audio-based video object segmentation aims to locate and segment objects in videos conditioned on audio cues, requiring precise understanding of both appearance and motion. Recent audio-driven video segmentation methods extend MLLMs by…

计算机视觉与模式识别 · 计算机科学 2026-04-28 Zhiyu Wang , Xudong Kang , Shutao Li

Video Instance Segmentation (VIS) jointly tackles multi-object detection, tracking, and segmentation in video sequences. In the past, VIS methods mirrored the fragmentation of these subtasks in their architectural design, hence missing out…

计算机视觉与模式识别 · 计算机科学 2022-07-25 Adrià Caelles , Tim Meinhardt , Guillem Brasó , Laura Leal-Taixé

We present an approach to semi-supervised video object segmentation, in the context of the DAVIS 2017 challenge. Our approach combines category-based object detection, category-independent object appearance segmentation and temporal object…

计算机视觉与模式识别 · 计算机科学 2017-07-21 Gilad Sharir , Eddie Smolyansky , Itamar Friedman

The task of temporally detecting and segmenting actions in untrimmed videos has seen an increased attention recently. One problem in this context arises from the need to define and label action boundaries to create annotations for training…

计算机视觉与模式识别 · 计算机科学 2019-04-09 Anna Kukleva , Hilde Kuehne , Fadime Sener , Juergen Gall

Referring video object segmentation (RVOS) aims to identify, track and segment the objects in a video based on language descriptions, which has received great attention in recent years. However, existing datasets remain focus on short video…

计算机视觉与模式识别 · 计算机科学 2025-10-29 Tianming Liang , Haichao Jiang , Yuting Yang , Chaolei Tan , Shuai Li , Wei-Shi Zheng , Jian-Fang Hu

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…

计算机视觉与模式识别 · 计算机科学 2026-02-05 Qifeng Cai , Hao Liang , Zhaoyang Han , Hejun Dong , Meiyi Qiang , Ruichuan An , Quanqing Xu , Bin Cui , Wentao Zhang

Livestream videos have become a significant part of online learning, where design, digital marketing, creative painting, and other skills are taught by experienced experts in the sessions, making them valuable materials. However, Livestream…

计算机视觉与模式识别 · 计算机科学 2022-10-13 Jielin Qiu , Franck Dernoncourt , Trung Bui , Zhaowen Wang , Ding Zhao , Hailin Jin

The rapid growth of video on the internet has made searching for video content using natural language queries a significant challenge. Human-generated queries for video datasets `in the wild' vary a lot in terms of degree of specificity,…

计算机视觉与模式识别 · 计算机科学 2020-02-17 Yang Liu , Samuel Albanie , Arsha Nagrani , Andrew Zisserman

Understanding the structure of complex activities in untrimmed videos is a challenging task in the area of action recognition. One problem here is that this task usually requires a large amount of hand-annotated minute- or even hour-long…

计算机视觉与模式识别 · 计算机科学 2020-10-01 Rosaura G. VidalMata , Walter J. Scheirer , Anna Kukleva , David Cox , Hilde Kuehne

Query-based video situation detection (as opposed to manual or customized algorithms) is critical for diverse applications such as traffic monitoring, surveillance1 , and other types of environmental/infrastructure monitoring. Video…

数据库 · 计算机科学 2022-11-29 Hafsa Billah , Mayur Arora , Sharma Chakravarthy

Current multimodal large language models (MLLMs) struggle with hour-level video understanding, facing significant challenges not only in modeling the substantial information volume of long videos but also in overcoming the memory wall and…

计算机视觉与模式识别 · 计算机科学 2025-11-18 Hong Gao , Yiming Bao , Xuezhen Tu , Bin Zhong , Linan Yue , Minling Zhang