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Unified video modeling that combines generation and understanding capabilities is increasingly important but faces two key challenges: maintaining semantic faithfulness during flow-based generation due to text-visual token imbalance and the…

Computer Vision and Pattern Recognition · Computer Science 2025-10-01 Jiabin Luo , Junhui Lin , Zeyu Zhang , Biao Wu , Meng Fang , Ling Chen , Hao Tang

Multivariate time series anomaly detection (MTAD) plays a vital role in a wide variety of real-world application domains. Over the past few years, MTAD has attracted rapidly increasing attention from both academia and industry. Many deep…

Machine Learning · Computer Science 2023-06-13 Feng Xia , Xin Chen , Shuo Yu , Mingliang Hou , Mujie Liu , Linlin You

Semi-supervised video action recognition tends to enable deep neural networks to achieve remarkable performance even with very limited labeled data. However, existing methods are mainly transferred from current image-based methods (e.g.,…

Computer Vision and Pattern Recognition · Computer Science 2022-04-26 Junfei Xiao , Longlong Jing , Lin Zhang , Ju He , Qi She , Zongwei Zhou , Alan Yuille , Yingwei Li

With the exponential growth of multimedia data, leveraging multimodal sensors presents a promising approach for improving accuracy in human activity recognition. Nevertheless, accurately identifying these activities using both video data…

Computer Vision and Pattern Recognition · Computer Science 2024-08-09 Rex Liu , Xin Liu

Understanding human behavior and activity facilitates advancement of numerous real-world applications, and is critical for video analysis. Despite the progress of action recognition algorithms in trimmed videos, the majority of real-world…

Computer Vision and Pattern Recognition · Computer Science 2021-10-04 Elahe Vahdani , Yingli Tian

A long-standing goal of reinforcement learning is to acquire agents that can learn on training tasks and generalize well on unseen tasks that may share a similar dynamic but with different reward functions. The ability to generalize across…

Machine Learning · Computer Science 2026-01-26 Chengyang Ying , Xinning Zhou , Zhongkai Hao , Hang Su , Songming Liu , Dong Yan , Jun Zhu

The goal of acoustic (or sound) events detection (AED or SED) is to predict the temporal position of target events in given audio segments. This task plays a significant role in safety monitoring, acoustic early warning and other scenarios.…

Audio and Speech Processing · Electrical Eng. & Systems 2019-11-26 Wenhao Ding , Liang He

Spatio-temporal graph learning is a fundamental problem in modern urban systems. Existing approaches tackle different tasks independently, tailoring their models to unique task characteristics. These methods, however, fall short of modeling…

Machine Learning · Computer Science 2024-10-01 Junfeng Hu , Xu Liu , Zhencheng Fan , Yuxuan Liang , Roger Zimmermann

In the era of Large Language Models (LLMs), tremendous strides have been made in the field of multimodal understanding. However, existing advanced algorithms are limited to effectively utilizing the immense representation capabilities and…

Artificial Intelligence · Computer Science 2023-09-06 Hao Feng , Zijian Wang , Jingqun Tang , Jinghui Lu , Wengang Zhou , Houqiang Li , Can Huang

This paper presents the first-rank solution for the Multi-Modal Action Recognition Challenge, part of the Multi-Modal Visual Pattern Recognition Workshop at the \acl{ICPR} 2024. The competition aimed to recognize human actions using a…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 Anh-Kiet Duong , Petra Gomez-Krämer

Temporal action detection (TAD), which locates and recognizes action segments, remains a challenging task in video understanding due to variable segment lengths and ambiguous boundaries. Existing methods treat neighboring contexts of an…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Ning Wang , Yun Xiao , Xiaopeng Peng , Xiaojun Chang , Xuanhong Wang , Dingyi Fang

Recently, temporal action localization (TAL), i.e., finding specific action segments in untrimmed videos, has attracted increasing attentions of the computer vision community. State-of-the-art solutions for TAL involves evaluating the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-01 Peisen Zhao , Lingxi Xie , Chen Ju , Ya Zhang , Yanfeng Wang , Qi Tian

Accurate and robust multimodal multi-task perception is crucial for modern autonomous driving systems. However, current multimodal perception research follows independent paradigms designed for specific perception tasks, leading to a lack…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Xiao Zhao , Xukun Zhang , Dingkang Yang , Mingyang Sun , Mingcheng Li , Shunli Wang , Lihua Zhang

Video temporal action detection aims to temporally localize and recognize the action in untrimmed videos. Existing one-stage approaches mostly focus on unifying two subtasks, i.e., localization of action proposals and classification of each…

Computer Vision and Pattern Recognition · Computer Science 2019-04-17 Yupan Huang , Qi Dai , Yutong Lu

Detecting actions in untrimmed videos is an important yet challenging task. In this paper, we present the structured segment network (SSN), a novel framework which models the temporal structure of each action instance via a structured…

Computer Vision and Pattern Recognition · Computer Science 2017-09-19 Yue Zhao , Yuanjun Xiong , Limin Wang , Zhirong Wu , Xiaoou Tang , Dahua Lin

Multi-view action recognition (MVAR) leverages complementary temporal information from different views to improve the learning performance. Obtaining informative view-specific representation plays an essential role in MVAR. Attention has…

Computer Vision and Pattern Recognition · Computer Science 2020-11-30 Yue Bai , Zhiqiang Tao , Lichen Wang , Sheng Li , Yu Yin , Yun Fu

Time series anomaly detection (TSAD) plays an important role in many domains such as finance, transportation, and healthcare. With the ongoing instrumentation of reality, more time series data will be available, leading also to growing…

Building reliable speech systems often requires combining multiple modalities, like audio and visual cues. While such multimodal solutions frequently lead to improvements in performance and may even be critical in certain cases, they come…

Sound · Computer Science 2025-01-31 Joanna Hong , Sanjeel Parekh , Honglie Chen , Jacob Donley , Ke Tan , Buye Xu , Anurag Kumar

Temporal understanding in autonomous driving (AD) remains a significant challenge, even for recent state-of-the-art (SoTA) Vision-Language Models (VLMs). Prior work has introduced datasets and benchmarks aimed at improving temporal…

Computer Vision and Pattern Recognition · Computer Science 2025-12-18 Kevin Cannons , Saeed Ranjbar Alvar , Mohammad Asiful Hossain , Ahmad Rezaei , Mohsen Gholami , Alireza Heidarikhazaei , Zhou Weimin , Yong Zhang , Mohammad Akbari

Accurate and robust 3D object detection is a critical component in autonomous vehicles and robotics. While recent radar-camera fusion methods have made significant progress by fusing information in the bird's-eye view (BEV) representation,…

Computer Vision and Pattern Recognition · Computer Science 2024-12-12 Jisong Kim , Minjae Seong , Jun Won Choi