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Text-based person search aims to retrieve images of a certain pedestrian by a textual description. The key challenge of this task is to eliminate the inter-modality gap and achieve the feature alignment across modalities. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2021-12-14 Shiping Li , Min Cao , Min Zhang

Recognizing soft-biometric pedestrian attributes is essential in video surveillance and fashion retrieval. Recent works show promising results on single datasets. Nevertheless, the generalization ability of these methods under different…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Andreas Specker , Mickael Cormier , Jürgen Beyerer

Text anomaly detection is a critical task in natural language processing (NLP), with applications spanning fraud detection, misinformation identification, spam detection and content moderation, etc. Despite significant advances in large…

Computation and Language · Computer Science 2025-07-17 Feng Xiao , Jicong Fan

An understanding of pedestrian dynamics is indispensable for numerous urban applications including the design of transportation networks and planing for business development. Pedestrian counting often requires utilizing manual or technical…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Eric K. Tokuda , Yitzchak Lockerman , Gabriel B. A. Ferreira , Ethan Sorrelgreen , David Boyle , Roberto M. Cesar-Jr. , Claudio T. Silva

We propose a new method for anomaly detection of human actions. Our method works directly on human pose graphs that can be computed from an input video sequence. This makes the analysis independent of nuisance parameters such as viewpoint…

Computer Vision and Pattern Recognition · Computer Science 2020-04-13 Amir Markovitz , Gilad Sharir , Itamar Friedman , Lihi Zelnik-Manor , Shai Avidan

To obtain a more comprehensive activity understanding for a crowded scene, in this paper, we propose a new problem of panoramic human activity recognition (PAR), which aims to simultaneous achieve the individual action, social group…

Computer Vision and Pattern Recognition · Computer Science 2022-11-08 Ruize Han , Haomin Yan , Jiacheng Li , Songmiao Wang , Wei Feng , Song Wang

Person re-identification is the problem of recognizing people across different images or videos with non-overlapping views. Although there has been much progress in person re-identification over the last decade, it remains a challenging…

Computer Vision and Pattern Recognition · Computer Science 2024-07-02 Yeong-Jun Cho , Kuk-Jin Yoon

Video anomaly detection (VAD) has been paid increasing attention due to its potential applications, its current dominant tasks focus on online detecting anomalies% at the frame level, which can be roughly interpreted as the binary or…

Computer Vision and Pattern Recognition · Computer Science 2024-02-29 Peng Wu , Jing Liu , Xiangteng He , Yuxin Peng , Peng Wang , Yanning Zhang

Studies of object detection and localization, particularly pedestrian detection have received considerable attention in recent times due to its several prospective applications such as surveillance, driving assistance, autonomous cars, etc.…

Computer Vision and Pattern Recognition · Computer Science 2019-12-24 Sudip Das , Partha Sarathi Mukherjee , Ujjwal Bhattacharya

Video anomaly detection is a core problem in vision. Correctly detecting and identifying anomalous behaviors in pedestrians from video data will enable safety-critical applications such as surveillance, activity monitoring, and human-robot…

Computer Vision and Pattern Recognition · Computer Science 2022-07-07 Asiegbu Miracle Kanu-Asiegbu , Ram Vasudevan , Xiaoxiao Du

Detecting text located on the torsos of marathon runners and sports players in video is a challenging issue due to poor quality and adverse effects caused by flexible/colorful clothing, and different structures of human bodies or actions.…

Computer Vision and Pattern Recognition · Computer Science 2020-05-27 Sauradip Nag , Palaiahnakote Shivakumara , Umapada Pal , Tong Lu , Michael Blumenstein

A major bottleneck of pedestrian detection lies on the sharp performance deterioration in the presence of small-size pedestrians that are relatively far from the camera. Motivated by the observation that pedestrians of disparate spatial…

Computer Vision and Pattern Recognition · Computer Science 2018-05-23 Xiaowei Zhang , Li Cheng , Bo Li , Hai-Miao Hu

Pedestrian Attribute Recognition (PAR) is an indispensable task in human-centered research and has made great progress in recent years with the development of deep neural networks. However, the potential vulnerability and anti-interference…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Weizhe Kong , Xiao Wang , Ruichong Gao , Chenglong Li , Yu Zhang , Xing Yang , Yaowei Wang , Jin Tang

Abnormal event detection in videos is a challenging problem, partly due to the multiplicity of abnormal patterns and the lack of their corresponding annotations. In this paper, we propose new constrained pretext tasks to learn object level…

Computer Vision and Pattern Recognition · Computer Science 2023-04-25 Yassine Naji , Aleksandr Setkov , Angélique Loesch , Michèle Gouiffès , Romaric Audigier

In video surveillance applications, person search is a challenging task consisting in detecting people and extracting features from their silhouette for re-identification (re-ID) purpose. We propose a new end-to-end model that jointly…

Computer Vision and Pattern Recognition · Computer Science 2022-01-25 Angelique Loesch , Jaonary Rabarisoa , Romaric Audigier

A classical approach to abnormal activity detection is to learn a representation for normal activities from the training data and then use this learned representation to detect abnormal activities while testing. Typically, the methods based…

Computer Vision and Pattern Recognition · Computer Science 2019-08-14 Royston Rodrigues , Neha Bhargava , Rajbabu Velmurugan , Subhasis Chaudhuri

Person Search is a relevant task that aims to jointly solve Person Detection and Person Re-identification(re-ID). Though most previous methods focus on learning robust individual features for retrieval, it's still hard to distinguish…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Shihui Chen , Yueqing Zhuang , Boxun Li

This paper presents an overview of the Recognize the Unseen: Unusual Behavior Recognition from Pose Data Challenge, hosted at ISAS 2025. The challenge aims to address the critical need for automated recognition of unusual behaviors in…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Christina Garcia , Nhat Tan Le , Taihei Fujioka , Umang Dobhal , Milyun Ni'ma Shoumi , Thanh Nha Nguyen , Sozo Inoue

Detecting anomalies in human mobility is essential for applications such as public safety and urban planning. While traditional anomaly detection methods primarily focus on individual movement patterns (e.g., a child should stay at home at…

Machine Learning · Computer Science 2025-08-21 Haomin Wen , Shurui Cao , Leman Akoglu

Deep learning methods have achieved great success in pedestrian detection, owing to its ability to learn features from raw pixels. However, they mainly capture middle-level representations, such as pose of pedestrian, but confuse positive…

Computer Vision and Pattern Recognition · Computer Science 2014-12-02 Yonglong Tian , Ping Luo , Xiaogang Wang , Xiaoou Tang