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We develop a novel framework for single-scene video anomaly localization that allows for human-understandable reasons for the decisions the system makes. We first learn general representations of objects and their motions (using deep…

计算机视觉与模式识别 · 计算机科学 2022-12-16 Ashish Singh , Michael J. Jones , Erik Learned-Miller

Learning an object detector or retrieval requires a large data set with manual annotations. Such data sets are expensive and time consuming to create and therefore difficult to obtain on a large scale. In this work, we propose to exploit…

计算机视觉与模式识别 · 计算机科学 2019-10-22 Elad Amrani , Rami Ben-Ari , Tal Hakim , Alex Bronstein

Most person re-identification methods, being supervised techniques, suffer from the burden of massive annotation requirement. Unsupervised methods overcome this need for labeled data, but perform poorly compared to the supervised…

计算机视觉与模式识别 · 计算机科学 2023-04-06 Xueping Wang , Sujoy Paul , Dripta S. Raychaudhuri , Min Liu , Yaonan Wang , Amit K. Roy-Chowdhury

Person re-identification is a key technology for analyzing video-based human behavior; however, its application is still challenging in practical situations due to the performance degradation for domains different from those in the training…

计算机视觉与模式识别 · 计算机科学 2022-10-26 S. Takeuchi , F. Li , S. Iwasaki , J. Ning , G. Suzuki

Unsupervised approaches for video anomaly detection may not perform as good as supervised approaches. However, learning unknown types of anomalies using an unsupervised approach is more practical than a supervised approach as annotation is…

计算机视觉与模式识别 · 计算机科学 2022-11-03 Kamalakar Thakare , Yash Raghuwanshi , Debi Prosad Dogra , Heeseung Choi , Ig-Jae Kim

Manipulated videos often contain subtle inconsistencies between their visual and audio signals. We propose a video forensics method, based on anomaly detection, that can identify these inconsistencies, and that can be trained solely using…

计算机视觉与模式识别 · 计算机科学 2023-03-29 Chao Feng , Ziyang Chen , Andrew Owens

Video Individual Counting (VIC) aims to predict the number of unique individuals in a single video. % Existing methods learn representations based on trajectory labels for individuals, which are annotation-expensive. % To provide a more…

计算机视觉与模式识别 · 计算机科学 2023-12-12 Xinyan Liu , Guorong Li , Yuankai Qi , Ziheng Yan , Zhenjun Han , Anton van den Hengel , Ming-Hsuan Yang , Qingming Huang

Visual anomaly detection in real-world industrial settings faces two major limitations. First, most existing methods are trained on purely normal data or on unlabeled datasets assumed to be predominantly normal, presuming the absence of…

计算机视觉与模式识别 · 计算机科学 2026-02-05 Anindya Sundar Das , Monowar Bhuyan

Video anomaly detection is well investigated in weakly-supervised and one-class classification (OCC) settings. However, unsupervised video anomaly detection methods are quite sparse, likely because anomalies are less frequent in occurrence…

计算机视觉与模式识别 · 计算机科学 2022-03-09 Muhammad Zaigham Zaheer , Arif Mahmood , Muhammad Haris Khan , Mattia Segu , Fisher Yu , Seung-Ik Lee

Learning to detect real-world anomalous events using video-level annotations is a difficult task mainly because of the noise present in labels. An anomalous labelled video may actually contain anomaly only in a short duration while the rest…

计算机视觉与模式识别 · 计算机科学 2021-05-03 Muhammad Zaigham Zaheer , Jin-ha Lee , Marcella Astrid , Arif Mahmood , Seung-Ik Lee

Weakly supervised detection of anomalies in surveillance videos is a challenging task. Going beyond existing works that have deficient capabilities to localize anomalies in long videos, we propose a novel glance and focus network to…

计算机视觉与模式识别 · 计算机科学 2022-12-01 Yingxian Chen , Zhengzhe Liu , Baoheng Zhang , Wilton Fok , Xiaojuan Qi , Yik-Chung Wu

We present a novel method for recovering the absolute pose and shape of a human in a pre-scanned scene given a single image. Unlike previous methods that perform sceneaware mesh optimization, we propose to first estimate absolute position…

计算机视觉与模式识别 · 计算机科学 2023-06-07 Zehong Shen , Zhi Cen , Sida Peng , Qing Shuai , Hujun Bao , Xiaowei Zhou

Human-centric 3D scene understanding has recently drawn increasing attention, driven by its critical impact on robotics. However, human-centric real-life scenarios are extremely diverse and complicated, and humans have intricate motions and…

计算机视觉与模式识别 · 计算机科学 2024-03-18 Yichen Yao , Zimo Jiang , Yujing Sun , Zhencai Zhu , Xinge Zhu , Runnan Chen , Yuexin Ma

Progress in video anomaly detection research is currently slowed by small datasets that lack a wide variety of activities as well as flawed evaluation criteria. This paper aims to help move this research effort forward by introducing a…

计算机视觉与模式识别 · 计算机科学 2020-01-27 Bharathkumar Ramachandra , Michael Jones

Diagnostic and intervention methodologies for skill assessment of autism typically requires a clinician repetitively initiating several stimuli and recording the child's response. In this paper, we propose to automate the response…

计算机视觉与模式识别 · 计算机科学 2020-01-30 Prashant Pandey , Prathosh AP , Manu Kohli , Josh Pritchard

Detection of anomalous events in videos is an important problem in applications such as surveillance. Video anomaly detection (VAD) is well-studied in the one-class classification (OCC) and weakly supervised (WS) settings. However, fully…

计算机视觉与模式识别 · 计算机科学 2023-10-27 Anas Al-lahham , Nurbek Tastan , Zaigham Zaheer , Karthik Nandakumar

This work tackles Weakly Supervised Anomaly detection, in which a predictor is allowed to learn not only from normal examples but also from a few labeled anomalies made available during training. In particular, we deal with the localization…

计算机视觉与模式识别 · 计算机科学 2022-08-11 Aniello Panariello , Angelo Porrello , Simone Calderara , Rita Cucchiara

The Audio-Visual Video Parsing task aims to identify and temporally localize the events that occur in either or both the audio and visual streams of audible videos. It often performs in a weakly-supervised manner, where only video event…

计算机视觉与模式识别 · 计算机科学 2024-06-04 Jinxing Zhou , Dan Guo , Yiran Zhong , Meng Wang

In this paper, we propose a deep convolutional neural network (CNN) for anomaly detection in surveillance videos. The model is adapted from a typical auto-encoder working on video patches under the perspective of sparse combination…

计算机视觉与模式识别 · 计算机科学 2019-08-20 Trong Nguyen Nguyen , Jean Meunier

Video anomaly detection is recently formulated as a multiple instance learning task under weak supervision, in which each video is treated as a bag of snippets to be determined whether contains anomalies. Previous efforts mainly focus on…

计算机视觉与模式识别 · 计算机科学 2022-08-12 Yujiang Pu , Xiaoyu Wu