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Of late, weakly supervised object detection is with great importance in object recognition. Based on deep learning, weakly supervised detectors have achieved many promising results. However, compared with fully supervised detection, it is…

Computer Vision and Pattern Recognition · Computer Science 2017-04-04 Peng Tang , Xinggang Wang , Xiang Bai , Wenyu Liu

Multiple Instance Learning (MIL) has garnered widespread attention in the field of Whole Slide Image (WSI) classification as it replaces pixel-level manual annotation with diagnostic reports as labels, significantly reducing labor costs.…

Image and Video Processing · Electrical Eng. & Systems 2025-07-08 Tianhang Nan , Hao Quan , Yong Ding , Xingyu Li , Kai Yang , Xiaoyu Cui

Video anomaly detection aims to develop automated models capable of identifying abnormal events in surveillance videos. The benchmark setup for this task is extremely challenging due to: i) the limited size of the training sets, ii) weak…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Jash Dalvi , Ali Dabouei , Gunjan Dhanuka , Min Xu

Recent advancements in weakly-supervised video anomaly detection have achieved remarkable performance by applying the multiple instance learning paradigm based on multimodal foundation models such as CLIP to highlight anomalous instances…

Computer Vision and Pattern Recognition · Computer Science 2025-11-14 Wenti Yin , Huaxin Zhang , Xiang Wang , Yuqing Lu , Yicheng Zhang , Bingquan Gong , Jialong Zuo , Li Yu , Changxin Gao , Nong Sang

Weakly supervised object detection (WSOD) focuses on training object detector with only image-level annotations, and is challenging due to the gap between the supervision and the objective. Most of existing approaches model WSOD as a…

Computer Vision and Pattern Recognition · Computer Science 2019-06-17 Yan Gao , Boxiao Liu , Nan Guo , Xiaochun Ye , Fang Wan , Haihang You , Dongrui Fan

Video anomaly detection (VAD) with weak supervision has achieved remarkable performance in utilizing video-level labels to discriminate whether a video frame is normal or abnormal. However, current approaches are inherently limited to a…

Computer Vision and Pattern Recognition · Computer Science 2024-03-14 Peng Wu , Xuerong Zhou , Guansong Pang , Yujia Sun , Jing Liu , Peng Wang , Yanning Zhang

Existing salient instance detection (SID) methods typically learn from pixel-level annotated datasets. In this paper, we present the first weakly-supervised approach to the SID problem. Although weak supervision has been considered in…

Computer Vision and Pattern Recognition · Computer Science 2021-11-22 Xin Tian , Ke Xu , Xin Yang , Baocai Yin , Rynson W. H. Lau

We describe a novel weakly supervised deep learning framework that combines both the discriminative and generative models to learn meaningful representation in the multiple instance learning (MIL) setting. MIL is a weakly supervised…

Machine Learning · Computer Science 2018-07-09 Shabnam Ghaffarzadegan

Visual Anomaly Detection (VAD) has gained significant research attention for its ability to identify anomalous images and pinpoint the specific areas responsible for the anomaly. A key advantage of VAD is its unsupervised nature, which…

Computer Vision and Pattern Recognition · Computer Science 2024-10-16 Manuel Barusco , Francesco Borsatti , Davide Dalle Pezze , Francesco Paissan , Elisabetta Farella , Gian Antonio Susto

Surveillance videos are able to capture a variety of realistic anomalies. In this paper, we propose to learn anomalies by exploiting both normal and anomalous videos. To avoid annotating the anomalous segments or clips in training videos,…

Computer Vision and Pattern Recognition · Computer Science 2019-02-15 Waqas Sultani , Chen Chen , Mubarak Shah

Video anomaly detection is a subject of great interest across industrial and academic domains due to its crucial role in computer vision applications. However, the inherent unpredictability of anomalies and the scarcity of anomaly samples…

Computer Vision and Pattern Recognition · Computer Science 2024-09-27 Yalong Jiang , Liquan Mao

Video Anomaly Detection (VAD) aims to localize abnormal events on the timeline of long-range surveillance videos. Anomaly-scoring-based methods have been prevailing for years but suffer from the high complexity of thresholding and low…

Computer Vision and Pattern Recognition · Computer Science 2024-01-12 Hui Lv , Qianru Sun

Weakly Supervised Object Detection (WSOD) is a task that detects objects in an image using a model trained only on image-level annotations. Current state-of-the-art models benefit from self-supervised instance-level supervision, but since…

Computer Vision and Pattern Recognition · Computer Science 2022-09-05 Jinhwan Seo , Wonho Bae , Danica J. Sutherland , Junhyug Noh , Daijin Kim

Video anomaly detection is commonly used in many applications such as security surveillance and is very challenging.A majority of recent video anomaly detection approaches utilize deep reconstruction models, but their performance is often…

Computer Vision and Pattern Recognition · Computer Science 2021-05-28 Xuanzhao Wang , Zhengping Che , Bo Jiang , Ning Xiao , Ke Yang , Jian Tang , Jieping Ye , Jingyu Wang , Qi Qi

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…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Kapil Deshpande , Narinder Singh Punn , Sanjay Kumar Sonbhadra , Sonali Agarwal

Recently, large vision and language models have shown their success when adapting them to many downstream tasks. In this paper, we present a unified framework named CLIP-ADA for Anomaly Detection by Adapting a pre-trained CLIP model. To…

Computer Vision and Pattern Recognition · Computer Science 2024-03-15 Yuxuan Cai , Xinwei He , Dingkang Liang , Ao Tong , Xiang Bai

Few-normal shot anomaly detection (FNSAD) aims to detect abnormal regions in images using only a few normal training samples, making the task highly challenging due to limited supervision and the diversity of potential defects. Recent…

Computer Vision and Pattern Recognition · Computer Science 2026-01-23 Morteza Poudineh , Marc Lalonde

In this paper, we introduce a new problem, named audio-visual video parsing, which aims to parse a video into temporal event segments and label them as either audible, visible, or both. Such a problem is essential for a complete…

Computer Vision and Pattern Recognition · Computer Science 2020-07-23 Yapeng Tian , Dingzeyu Li , Chenliang Xu

Video Anomaly Detection (VAD) is a challenging task due to the variability of anomalous events and the limited availability of labeled data. Under the Weakly-Supervised VAD (WSVAD) paradigm, only video-level labels are provided during…

Computer Vision and Pattern Recognition · Computer Science 2025-08-11 Giacomo D'Amicantonio , Snehashis Majhi , Quan Kong , Lorenzo Garattoni , Gianpiero Francesca , François Bremond , Egor Bondarev

Recently, weakly supervised video anomaly detection (WS-VAD) has emerged as a contemporary research direction to identify anomaly events like violence and nudity in videos using only video-level labels. However, this task has substantial…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Ayush Ghadiya , Purbayan Kar , Vishal Chudasama , Pankaj Wasnik