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Denial-of-Service (DoS) attacks remain a critical threat to network security, disrupting services and causing significant economic losses. Traditional detection methods, including statistical and rule-based models, struggle to adapt to…

Tremendous research efforts have been made to thrive deep domain adaptation (DA) by seeking domain-invariant features. Most existing deep DA models only focus on aligning feature representations of task-specific layers across domains while…

Computer Vision and Pattern Recognition · Computer Science 2020-05-15 Shuang Li , Chi Harold Liu , Qiuxia Lin , Binhui Xie , Zhengming Ding , Gao Huang , Jian Tang

Weakly supervised temporal action localization (WS-TAL) is a challenging task that aims to localize action instances in the given video with video-level categorical supervision. Both appearance and motion features are used in previous…

Computer Vision and Pattern Recognition · Computer Science 2021-07-28 Fa-Ting Hong , Jia-Chang Feng , Dan Xu , Ying Shan , Wei-Shi Zheng

Weakly-supervised Temporal Action Localization (W-TAL) aims to classify and localize all action instances in an untrimmed video under only video-level supervision. However, without frame-level annotations, it is challenging for W-TAL…

Computer Vision and Pattern Recognition · Computer Science 2020-10-23 Yuanhao Zhai , Le Wang , Wei Tang , Qilin Zhang , Junsong Yuan , Gang Hua

The discriminative power of modern deep learning models for 3D human action recognition is growing ever so potent. In conjunction with the recent resurgence of 3D human action representation with 3D skeletons, the quality and the pace of…

Computer Vision and Pattern Recognition · Computer Science 2017-04-18 Tae Soo Kim , Austin Reiter

Building upon the impressive success of CLIP (Contrastive Language-Image Pretraining), recent pioneer works have proposed to adapt the powerful CLIP to video data, leading to efficient and effective video learners for open-vocabulary action…

Computer Vision and Pattern Recognition · Computer Science 2024-05-27 Kun-Yu Lin , Henghui Ding , Jiaming Zhou , Yu-Ming Tang , Yi-Xing Peng , Zhilin Zhao , Chen Change Loy , Wei-Shi Zheng

There is significant progress in recognizing traditional human activities from videos focusing on highly distinctive actions involving discriminative body movements, body-object and/or human-human interactions. Driver's activities are…

Computer Vision and Pattern Recognition · Computer Science 2021-01-19 Zachary Wharton , Ardhendu Behera , Yonghuai Liu , Nik Bessis

Multiple object tracking and segmentation requires detecting, tracking, and segmenting objects belonging to a set of given classes. Most approaches only exploit the temporal dimension to address the association problem, while relying on…

Computer Vision and Pattern Recognition · Computer Science 2021-12-02 Lei Ke , Xia Li , Martin Danelljan , Yu-Wing Tai , Chi-Keung Tang , Fisher Yu

Action recognition is an important research topic in computer vision. It is the basic work for visual understanding and has been applied in many fields. Since human actions can vary in different environments, it is difficult to infer…

Computer Vision and Pattern Recognition · Computer Science 2019-10-23 Dong Cao , Lisha Xu , Dongdong Zhang

Cross-domain sentiment classification has been a hot spot these years, which aims to learn a reliable classifier using labeled data from a source domain and evaluate it on a target domain. In this vein, most approaches utilized domain…

Computation and Language · Computer Science 2022-09-08 Yicheng Zhu , Yiqiao Qiu , Qingyuan Wu , Fu Lee Wang , Yanghui Rao

In many practical visual recognition scenarios, feature distribution in the source domain is generally different from that of the target domain, which results in the emergence of general cross-domain visual recognition problems. To address…

Computer Vision and Pattern Recognition · Computer Science 2019-12-25 Shanshan Wang , Lei Zhang , JingRu Fu

Action detection is an essential and challenging task, especially for densely labelled datasets of untrimmed videos. There are many real-world challenges in those datasets, such as composite action, co-occurring action, and high temporal…

Computer Vision and Pattern Recognition · Computer Science 2022-07-12 Rui Dai , Srijan Das , Francois Bremond

In real-world visual recognition problems, the assumption that the training data (source domain) and test data (target domain) are sampled from the same distribution is often violated. This is known as the domain adaptation problem. In this…

Computer Vision and Pattern Recognition · Computer Science 2018-04-17 Hongyu Xu , Jingjing Zheng , Azadeh Alavi , Rama Chellappa

Object recognition from images means to automatically find object(s) of interest and to return their category and location information. Benefiting from research on deep learning, like convolutional neural networks~(CNNs) and generative…

Computer Vision and Pattern Recognition · Computer Science 2024-01-09 Zhize Wu , Xiaofeng Wang , Tong Xu , Xuebin Yang , Le Zou , Lixiang Xu , Thomas Weise

Skeleton-based action recognition methods are limited by the semantic extraction of spatio-temporal skeletal maps. However, current methods have difficulty in effectively combining features from both temporal and spatial graph dimensions…

Computer Vision and Pattern Recognition · Computer Science 2022-08-09 Shengqin Wang , Yongji Zhang , Minghao Zhao , Hong Qi , Kai Wang , Fenglin Wei , Yu Jiang

Despite the notable progress made in action recognition tasks, not much work has been done in action recognition specifically for human-robot interaction. In this paper, we deeply explore the characteristics of the action recognition task…

Computer Vision and Pattern Recognition · Computer Science 2020-07-03 Ziyang Song , Ziyi Yin , Zejian Yuan , Chong Zhang , Wanchao Chi , Yonggen Ling , Shenghao Zhang

The recent advances in deep transfer learning reveal that adversarial learning can be embedded into deep networks to learn more transferable features to reduce the distribution discrepancy between two domains. Existing adversarial domain…

Machine Learning · Computer Science 2019-09-19 Chaohui Yu , Jindong Wang , Yiqiang Chen , Meiyu Huang

Fine-grained action recognition is attracting increasing attention due to the emerging demand of specific action understanding in real-world applications, whereas the data of rare fine-grained categories is very limited. Therefore, we…

Computer Vision and Pattern Recognition · Computer Science 2021-08-17 Jiahao Wang , Yunhong Wang , Sheng Liu , Annan Li

Recent deep learning methods for object detection rely on a large amount of bounding box annotations. Collecting these annotations is laborious and costly, yet supervised models do not generalize well when testing on images from a different…

Computer Vision and Pattern Recognition · Computer Science 2019-10-25 Han-Kai Hsu , Chun-Han Yao , Yi-Hsuan Tsai , Wei-Chih Hung , Hung-Yu Tseng , Maneesh Singh , Ming-Hsuan Yang

Action recognition has become a rapidly developing research field within the last decade. But with the increasing demand for large scale data, the need of hand annotated data for the training becomes more and more impractical. One way to…

Computer Vision and Pattern Recognition · Computer Science 2019-06-05 Hilde Kuehne , Alexander Richard , Juergen Gall