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Existing methods for anomaly detection based on memory-augmented autoencoder (AE) have the following drawbacks: (1) Establishing a memory bank requires additional memory space. (2) The fixed number of prototypes from subjective assumptions…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Zhiwei Yang , Peng Wu , Jing Liu , Xiaotao Liu

Skeleton sequences are widely used for action recognition task due to its lightweight and compact characteristics. Recent graph convolutional network (GCN) approaches have achieved great success for skeleton-based action recognition since…

Computer Vision and Pattern Recognition · Computer Science 2021-12-20 Ruijie Hou , Zhao Wang

Radar gait recognition is robust to light variations and less infringement on privacy. Previous studies often utilize either spectrograms or cadence velocity diagrams. While the former shows the time-frequency patterns, the latter encodes…

Computer Vision and Pattern Recognition · Computer Science 2021-11-25 Shiliang Chen , Wentao He , Jianfeng Ren , Xudong Jiang

Skeleton-based gesture recognition methods have achieved high success using Graph Convolutional Network (GCN). In addition, context-dependent adaptive topology as a neighborhood vertex information and attention mechanism leverages a model…

Computer Vision and Pattern Recognition · Computer Science 2024-04-04 Ikuo Nakamura

Video anomaly detection (VAD) has been intensively studied for years because of its potential applications in intelligent video systems. Existing unsupervised VAD methods tend to learn normality from training sets consisting of only normal…

Computer Vision and Pattern Recognition · Computer Science 2023-01-10 Mengyang Zhao , Xinhua Zeng , Yang Liu , Jing Liu , Di Li , Xing Hu , Chengxin Pang

Recently Transformer-based hyperspectral image (HSI) change detection methods have shown remarkable performance. Nevertheless, existing attention mechanisms in Transformers have limitations in local feature representation. To address this…

Image and Video Processing · Electrical Eng. & Systems 2024-11-22 Ziyi Wang , Feng Gao , Junyu Dong , Qian Du

Deep learning has driven significant progress in object detection using Synthetic Aperture Radar (SAR) imagery. Existing methods, while achieving promising results, often struggle to effectively integrate local and global information,…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Mingxiang Cao , Weiying Xie , Jie Lei , Jiaqing Zhang , Daixun Li , Yunsong Li

Fast arbitrary neural style transfer has attracted widespread attention from academic, industrial and art communities due to its flexibility in enabling various applications. Existing solutions either attentively fuse deep style feature…

Computer Vision and Pattern Recognition · Computer Science 2021-08-12 Songhua Liu , Tianwei Lin , Dongliang He , Fu Li , Meiling Wang , Xin Li , Zhengxing Sun , Qian Li , Errui Ding

Fine-grained action localization in untrimmed sports videos presents a significant challenge due to rapid and subtle motion transitions over short durations. Existing supervised and weakly supervised solutions often rely on extensive…

Computer Vision and Pattern Recognition · Computer Science 2025-08-28 Bikash Kumar Badatya , Vipul Baghel , Ravi Hegde

In this paper, we propose $\text{HF}^2$-VAD, a Hybrid framework that integrates Flow reconstruction and Frame prediction seamlessly to handle Video Anomaly Detection. Firstly, we design the network of ML-MemAE-SC (Multi-Level Memory modules…

Computer Vision and Pattern Recognition · Computer Science 2021-08-17 Zhian Liu , Yongwei Nie , Chengjiang Long , Qing Zhang , Guiqing Li

Multi-modal learning has shown exceptional performance in various tasks, especially in medical applications, where it integrates diverse medical information for comprehensive diagnostic evidence. However, there still are several challenges…

Machine Learning · Computer Science 2024-11-19 Lin Fan , Yafei Ou , Cenyang Zheng , Pengyu Dai , Tamotsu Kamishima , Masayuki Ikebe , Kenji Suzuki , Xun Gong

Anomaly detection through video analysis is of great importance to detect any anomalous vehicle/human behavior at a traffic intersection. While most existing works use neural networks and conventional machine learning methods based on…

Computer Vision and Pattern Recognition · Computer Science 2018-08-31 Mohammmad Farhadi Bajestani , Seyed Soroush Heidari Rahmat Abadi , Seyed Mostafa Derakhshandeh Fard , Roozbeh Khodadadeh

The prevention of falls is paramount in modern healthcare, particularly for the elderly, as falls can lead to severe injuries or even fatalities. Additionally, the growing incidence of falls among the elderly, coupled with the urgent need…

Computer Vision and Pattern Recognition · Computer Science 2024-08-23 Jungpil Shin , Abu Saleh Musa Miah , Rei Egawa1 , Koki Hirooka , Md. Al Mehedi Hasan , Yoichi Tomioka , Yong Seok Hwang

Unsupervised Domain Adaptation (UDA) seeks to transfer knowledge from a labeled source domain to an unlabeled target domain but often suffers from severe domain and scale gaps that degrade performance. Existing cross-attention-based…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Zelin Zang , Yehui Yang , Fei Wang , Liangyu Li , Baigui Sun

We propose Dual Cross-Attention (DCA), a simple yet effective attention module that is able to enhance skip-connections in U-Net-based architectures for medical image segmentation. DCA addresses the semantic gap between encoder and decoder…

Computer Vision and Pattern Recognition · Computer Science 2024-08-02 Gorkem Can Ates , Prasoon Mohan , Emrah Celik

Recently, transformers have demonstrated great potential for modeling long-term dependencies from skeleton sequences and thereby gained ever-increasing attention in skeleton action recognition. However, the existing transformer-based…

Computer Vision and Pattern Recognition · Computer Science 2024-07-31 Wenhan Wu , Ce Zheng , Zihao Yang , Chen Chen , Srijan Das , Aidong Lu

Time series anomaly detection plays a critical role in automated monitoring systems. Most previous deep learning efforts related to time series anomaly detection were based on recurrent neural networks (RNN). In this paper, we propose a…

Machine Learning · Computer Science 2019-06-03 Tailai Wen , Roy Keyes

Unsupervised image translation, which aims in translating two independent sets of images, is challenging in discovering the correct correspondences without paired data. Existing works build upon Generative Adversarial Network (GAN) such…

Computer Vision and Pattern Recognition · Computer Science 2018-02-20 Shuang Ma , Jianlong Fu , Chang Wen Chen , Tao Mei

Human trajectory anomaly detection has become increasingly important across a wide range of applications, including security surveillance and public health. However, existing trajectory anomaly detection methods are primarily focused on…

Machine Learning · Computer Science 2024-11-05 Yueyang Liu , Lance Kennedy , Hossein Amiri , Andreas Züfle

In the current salient object detection network, the most popular method is using U-shape structure. However, the massive number of parameters leads to more consumption of computing and storage resources which are not feasible to deploy on…

Computer Vision and Pattern Recognition · Computer Science 2021-12-21 Bin Zhang , Yang Wu , Xiaojing Zhang , Ming Ma