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Surveillance footage can catch a wide range of realistic anomalies. This research suggests using a weakly supervised strategy to avoid annotating anomalous segments in training videos, which is time consuming. In this approach only video…

计算机视觉与模式识别 · 计算机科学 2022-06-07 Kapil Deshpande , Narinder Singh Punn , Sanjay Kumar Sonbhadra , Sonali Agarwal

Multiple Instance Learning is the predominant method for Whole Slide Image classification in digital pathology, enabling the use of slide-level labels to supervise model training. Although MIL eliminates the tedious fine-grained annotation…

计算机视觉与模式识别 · 计算机科学 2025-05-28 Chen Shu , Boyu Fu , Yiman Li , Ting Yin , Wenchuan Zhang , Jie Chen , Yuhao Yi , Hong Bu

Weakly supervised object detection (WSOD) using only image-level annotations has attracted growing attention over the past few years. Existing approaches using multiple instance learning easily fall into local optima, because such mechanism…

计算机视觉与模式识别 · 计算机科学 2020-02-05 Chenhao Lin , Siwen Wang , Dongqi Xu , Yu Lu , Wayne Zhang

Anomaly detection (AD) is a crucial task in machine learning with various applications, such as detecting emerging diseases, identifying financial frauds, and detecting fake news. However, obtaining complete, accurate, and precise labels…

机器学习 · 计算机科学 2023-02-10 Minqi Jiang , Chaochuan Hou , Ao Zheng , Xiyang Hu , Songqiao Han , Hailiang Huang , Xiangnan He , Philip S. Yu , Yue Zhao

Whole Slide Image (WSI) classification remains a challenge due to their extremely high resolution and the absence of fine-grained labels. Presently, WSI classification is usually regarded as a Multiple Instance Learning (MIL) problem when…

计算机视觉与模式识别 · 计算机科学 2023-08-24 Hongyi Wang , Luyang Luo , Fang Wang , Ruofeng Tong , Yen-Wei Chen , Hongjie Hu , Lanfen Lin , Hao Chen

This work studies a challenging and practical issue known as multi-class unsupervised anomaly detection (MUAD). This problem requires only normal images for training while simultaneously testing both normal and anomaly images across…

计算机视觉与模式识别 · 计算机科学 2024-08-13 Jiangning Zhang , Xuhai Chen , Yabiao Wang , Chengjie Wang , Yong Liu , Xiangtai Li , Ming-Hsuan Yang , Dacheng Tao

With the increasing adoption of video anomaly detection in intelligent surveillance domains, conventional visual-based detection approaches often struggle with information insufficiency and high false-positive rates in complex environments.…

计算机视觉与模式识别 · 计算机科学 2025-06-03 Peng Wu , Wanshun Su , Guansong Pang , Yujia Sun , Qingsen Yan , Peng Wang , Yanning Zhang

Anomaly detection is a crucial task in various domains. Most of the existing methods assume the normal sample data clusters around a single central prototype while the real data may consist of multiple categories or subgroups. In addition,…

机器学习 · 统计学 2024-12-03 Zhijin Dong , Hongzhi Liu , Boyuan Ren , Weimin Xiong , Zhonghai Wu

Video Anomaly Detection (VAD) can play a key role in spotting unusual activities in video footage. VAD is difficult to use in real-world settings due to the dynamic nature of human actions, environmental variations, and domain shifts.…

计算机视觉与模式识别 · 计算机科学 2025-08-13 Shanle Yao , Ghazal Alinezhad Noghre , Armin Danesh Pazho , Hamed Tabkhi

In Multiple Instance learning (MIL), weak labels are provided at the bag level with only presence/absence information known. However, there is a considerable gap in performance in comparison to a fully supervised model, limiting the…

机器学习 · 计算机科学 2021-03-22 Anxiang Zhang , Ankit Shah , Bhiksha Raj

In this paper, we address the challenging problem of single-scene, fully unsupervised video anomaly detection (VAD), where raw videos containing both normal and abnormal events are used directly for training and testing without any labels.…

计算机视觉与模式识别 · 计算机科学 2026-04-21 Yuang Geng , Junkai Zhou , Kang Yang , Pan He , Zhuoyang Zhou , Jose C. Principe , Joel Harley , Ivan Ruchkin

In recent years, the task of weakly supervised audio-visual violence detection has gained considerable attention. The goal of this task is to identify violent segments within multimodal data based on video-level labels. Despite advances in…

计算机视觉与模式识别 · 计算机科学 2024-02-14 Xiaogang Peng , Hao Wen , Yikai Luo , Xiao Zhou , Keyang Yu , Ping Yang , Zizhao Wu

Meta-learning has become a practical approach towards few-shot image classification, where "a strategy to learn a classifier" is meta-learned on labeled base classes and can be applied to tasks with novel classes. We remove the requirement…

计算机视觉与模式识别 · 计算机科学 2022-06-10 Han-Jia Ye , Lu Han , De-Chuan Zhan

Safe autonomous systems in complex environments require robust road anomaly segmentation to identify unknown obstacles. However, existing approaches often rely on pixel-level statistics to determine whether a region appears anomalous. This…

计算机视觉与模式识别 · 计算机科学 2026-03-03 Zhuolin He , Jiacheng Tang , Jian Pu , Xiangyang Xue

Zero-shot anomaly detection (ZSAD) requires detecting and localizing anomalies without access to target-class anomaly samples. Mainstream methods rely on vision-language models (VLMs) such as CLIP: they build hand-crafted or learned prompt…

计算机视觉与模式识别 · 计算机科学 2026-03-10 Yanning Hou , Peiyuan Li , Zirui Liu , Yitong Wang , Yanran Ruan , Jianfeng Qiu , Ke Xu

Multi-instance learning (MIL) deals with tasks where data is represented by a set of bags and each bag is described by a set of instances. Unlike standard supervised learning, only the bag labels are observed whereas the label for each…

机器学习 · 计算机科学 2021-04-27 Weijia Zhang , Jiuyong Li , Lin Liu

Convolutional Dictionary Learning (CDL) has emerged as a powerful approach for signal representation by learning translation-invariant features through convolution operations. While existing CDL methods are predominantly designed and used…

信号处理 · 电气工程与系统科学 2025-05-22 Hao Chen , Dayuan Tan

Multiple instance learning (MIL) is a powerful approach to classify whole slide images (WSIs) for diagnostic pathology. A fundamental challenge of MIL on WSI classification is to discover the \textit{critical instances} that trigger the bag…

计算机视觉与模式识别 · 计算机科学 2022-09-02 Zhikang Wang , Yue Bi , Tong Pan , Xiaoyu Wang , Chris Bain , Richard Bassed , Seiya Imoto , Jianhua Yao , Jiangning Song

Multiple instance learning (MIL) models have achieved remarkable success in analyzing whole slide images (WSIs) for disease classification problems. However, with regard to gigapixel WSI classification problems, current MIL models are often…

计算机视觉与模式识别 · 计算机科学 2023-12-14 Ziyu Su , Mostafa Rezapour , Usama Sajjad , Metin Nafi Gurcan , Muhammad Khalid Khan Niazi

Unsupervised learning visible-infrared person re-identification (USL-VI-ReID) aims at learning modality-invariant features from unlabeled cross-modality dataset, which is crucial for practical applications in video surveillance systems. The…

计算机视觉与模式识别 · 计算机科学 2024-11-05 De Cheng , Xiaojian Huang , Nannan Wang , Lingfeng He , Zhihui Li , Xinbo Gao