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Zero-shot Video Object Segmentation (ZSVOS) aims at segmenting the primary moving object without any human annotations. Mainstream solutions mainly focus on learning a single model on large-scale video datasets, which struggle to generalize…

计算机视觉与模式识别 · 计算机科学 2024-03-08 Weihuang Liu , Xi Shen , Haolun Li , Xiuli Bi , Bo Liu , Chi-Man Pun , Xiaodong Cun

Zero-shot learning (ZSL) aims to recognize unseen classes based on the knowledge of seen classes. Previous methods focused on learning direct embeddings from global features to the semantic space in hope of knowledge transfer from seen…

计算机视觉与模式识别 · 计算机科学 2021-10-15 Ziyang Wang , Yunhao Gou , Jingjing Li , Yu Zhang , Yang Yang

Video anomaly detection (VAD) plays a critical role in public safety applications such as intelligent surveillance. However, the rarity, unpredictability, and high annotation cost of real-world anomalies make it difficult to scale VAD…

计算机视觉与模式识别 · 计算机科学 2025-08-04 Suhang Cai , Xiaohao Peng , Chong Wang , Xiaojie Cai , Jiangbo Qian

We introduce the task of human action anomaly detection (HAAD), which aims to identify anomalous motions in an unsupervised manner given only the pre-determined normal category of training action samples. Compared to prior human-related…

计算机视觉与模式识别 · 计算机科学 2024-04-29 Shun Maeda , Chunzhi Gu , Jun Yu , Shogo Tokai , Shangce Gao , Chao Zhang

Weakly-Supervised Video Anomaly Detection aims to identify anomalous events using only video-level labels, balancing annotation efficiency with practical applicability. However, existing methods often oversimplify the anomaly space by…

计算机视觉与模式识别 · 计算机科学 2025-12-30 Junhee Lee , ChaeBeen Bang , MyoungChul Kim , MyeongAh Cho

Time series anomaly detection (TSAD) is a critical task, but developing models that generalize to unseen data in a zero-shot manner remains a major challenge. Prevailing foundation models for TSAD predominantly rely on reconstruction-based…

机器学习 · 计算机科学 2026-05-29 Tian Lan , Hao Duong Le , Jinbo Li , Wenjun He , Meng Wang , Chenghao Liu , Chen Zhang

Monitoring and analyzing stereotypical behaviours is important for early intervention and care taking in Autism Spectrum Disorder (ASD). This paper focuses on automatically detecting stereotypical behaviours with computer vision techniques.…

计算机视觉与模式识别 · 计算机科学 2023-05-15 Jiaqi Gao , Xinyang Jiang , Yuqing Yang , Dongsheng Li , Lili Qiu

Semi-supervised video anomaly detection (VAD) methods formulate the task of anomaly detection as detection of deviations from the learned normal patterns. Previous works in the field (reconstruction or prediction-based methods) suffer from…

计算机视觉与模式识别 · 计算机科学 2022-05-05 Mohammad Baradaran , Robert Bergevin

Video Anomaly Detection (VAD) is a fundamental challenge in computer vision, particularly due to the open-set nature of anomalies. While recent training-free approaches utilizing Vision-Language Models (VLMs) have shown promise, they…

计算机视觉与模式识别 · 计算机科学 2026-04-06 Lokman Bekit , Hamza Karim , Nghia T Nguyen , Yasin Yilmaz

Video Anomaly Detection (VAD) is an important topic in computer vision. Motivated by the recent advances in self-supervised learning, this paper addresses VAD by solving an intuitive yet challenging pretext task, i.e., spatio-temporal…

计算机视觉与模式识别 · 计算机科学 2022-07-25 Guodong Wang , Yunhong Wang , Jie Qin , Dongming Zhang , Xiuguo Bao , Di Huang

In Pose-based Video Anomaly Detection prior art is rooted on the assumption that abnormal events can be mostly regarded as a result of uncommon human behavior. Opposed to utilizing skeleton representations of humans, however, we investigate…

计算机视觉与模式识别 · 计算机科学 2025-03-30 Mia Siemon , Ivan Nikolov , Thomas B. Moeslund , Kamal Nasrollahi

The development of unsupervised Video Anomaly Detection (VAD) relies on technologies in the field of signal processing. Since the anomaly is quite ambiguous and unbounded, different detection demands may often be raised even in one…

计算机视觉与模式识别 · 计算机科学 2025-12-30 Kai Cheng , Xinzhe Li , Lijuan Che

In image recognition, there are many cases where training samples cannot cover all target classes. Zero-shot learning (ZSL) utilizes the class semantic information to classify samples of the unseen categories that have no corresponding…

计算机视觉与模式识别 · 计算机科学 2018-06-25 Fan Wu , Kai Tian , Jihong Guan , Shuigeng Zhou

This paper strives for the detection of real-world anomalies such as burglaries and assaults in surveillance videos. Although anomalies are generally local, as they happen in a limited portion of the frame, none of the previous works on the…

计算机视觉与模式识别 · 计算机科学 2019-01-30 Federico Landi , Cees G. M. Snoek , Rita Cucchiara

Semi-supervised video anomaly detection methods face two critical challenges: (1) Strong generalization blurs the boundary between normal and abnormal patterns. Although existing approaches attempt to alleviate this issue using memory…

计算机视觉与模式识别 · 计算机科学 2026-03-20 Juntong Li , Lingwei Dang , Qingxin Xiao , Shishuo Shang , Jiajia Cheng , Haomin Wu , Yun Hao , Qingyao Wu

This paper presents a novel approach to Zero-Shot Action Recognition. Recent works have explored the detection and classification of objects to obtain semantic information from videos with remarkable performance. Inspired by them, we…

计算机视觉与模式识别 · 计算机科学 2023-09-12 Valter Estevam , Rayson Laroca , David Menotti , Helio Pedrini

Skeleton-based human action recognition has attracted a lot of research attention during the past few years. Recent works attempted to utilize recurrent neural networks to model the temporal dependencies between the 3D positional…

计算机视觉与模式识别 · 计算机科学 2017-06-27 Jun Liu , Amir Shahroudy , Dong Xu , Alex C. Kot , Gang Wang

Vision-language models (VLMs) have demonstrated remarkable performance across various visual tasks, leveraging joint learning of visual and textual representations. While these models excel in zero-shot image tasks, their application to…

计算机视觉与模式识别 · 计算机科学 2024-09-12 Massimo Bosetti , Shibingfeng Zhang , Benedetta Liberatori , Giacomo Zara , Elisa Ricci , Paolo Rota

Object goal visual navigation is a challenging task that aims to guide a robot to find the target object based on its visual observation, and the target is limited to the classes pre-defined in the training stage. However, in real…

计算机视觉与模式识别 · 计算机科学 2023-02-21 Qianfan Zhao , Lu Zhang , Bin He , Hong Qiao , Zhiyong Liu

Human action recognition is crucial in computer vision systems. However, in real-world scenarios, human actions often fall outside the distribution of training data, requiring a model to both recognize in-distribution (ID) actions and…

计算机视觉与模式识别 · 计算机科学 2024-12-20 Jing Xu , Anqi Zhu , Jingyu Lin , Qiuhong Ke , Cunjian Chen
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