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Skeleton-based video anomaly detection (SVAD) is a crucial task in computer vision. Accurately identifying abnormal patterns or events enables operators to promptly detect suspicious activities, thereby enhancing safety. Achieving this…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Ali Karami , Thi Kieu Khanh Ho , Narges Armanfard

Chest X-rays (X-ray images) have been proven to be effective for the diagnosis of chest diseases, including Pneumonia, Lung Opacity, and COVID-19. However, relying on traditional medical methods for diagnosis from X-ray images is prone to…

Image and Video Processing · Electrical Eng. & Systems 2025-10-01 Omar Hesham Khater , Abdullahi Sani Shuaib , Sami Ul Haq , Abdul Jabbar Siddiqui

The dominant paradigm in spatiotemporal action detection is to classify actions using spatiotemporal features learned by 2D or 3D Convolutional Networks. We argue that several actions are characterized by their context, such as relevant…

Machine Learning · Computer Science 2021-07-30 Michail Tsiaousis , Gertjan Burghouts , Fieke Hillerström , Peter van der Putten

Modern neural networks are powerful predictive models. However, when it comes to recognizing that they may be wrong about their predictions, they perform poorly. For example, for one of the most common activation functions, the ReLU and its…

Computer Vision and Pattern Recognition · Computer Science 2022-08-17 Shervin Manzuri Shalmani , Fei Chiang , Rong Zheng

In video understanding, action spotting consists in temporally localizing human-induced events annotated with single timestamps. In this paper, we propose a novel loss function that specifically considers the temporal context naturally…

Computer Vision and Pattern Recognition · Computer Science 2020-03-31 Anthony Cioppa , Adrien Deliège , Silvio Giancola , Bernard Ghanem , Marc Van Droogenbroeck , Rikke Gade , Thomas B. Moeslund

This paper addresses the challenge of perceiving complete object shapes through visual perception. While prior studies have demonstrated encouraging outcomes in segmenting the visible parts of objects within a scene, amodal segmentation, in…

Robotics · Computer Science 2024-08-07 Jinyu Zhang , Yongchong Gu , Jianxiong Gao , Haitao Lin , Qiang Sun , Xinwei Sun , Xiangyang Xue , Yanwei Fu

Existing multimodal-based human action recognition approaches are computationally intensive, limiting their deployment in real-time applications. In this work, we present a novel and efficient pose-driven attention-guided multimodal network…

Computer Vision and Pattern Recognition · Computer Science 2025-03-21 Ahmed Abdelkawy , Asem Ali , Aly Farag

Weakly-supervised temporal action localization aims to recognize and localize action segments in untrimmed videos given only video-level action labels for training. Without the boundary information of action segments, existing methods…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Bo He , Xitong Yang , Le Kang , Zhiyu Cheng , Xin Zhou , Abhinav Shrivastava

Action detection is a challenging video understanding task, requiring modeling spatio-temporal and interaction relations. Current methods usually model actor-actor and actor-context relations separately, ignoring their complementarity and…

Computer Vision and Pattern Recognition · Computer Science 2023-04-25 Yin-Dong Zheng , Guo Chen , Minglei Yuan , Tong Lu

This paper addresses the problem of real-time action recognition in trimmed videos, for which deep neural networks have defined the state-of-the-art performance in the recent literature. For attaining higher recognition accuracies with…

Computer Vision and Pattern Recognition · Computer Science 2018-10-30 Marian K. Y. Boktor , Ahmad Al-Kabbany , Radwa Khalil , Said El-Khamy

Automotive Cyber-Physical Systems (ACPS) have attracted a significant amount of interest in the past few decades, while one of the most critical operations in these systems is the perception of the environment. Deep learning and,…

Computer Vision and Pattern Recognition · Computer Science 2021-07-21 Stavros Nousias , Erion-Vasilis Pikoulis , Christos Mavrokefalidis , Aris S. Lalos

Anomaly detection in video streams is a challenging problem because of the scarcity of abnormal events and the difficulty of accurately annotating them. To alleviate these issues, unsupervised learning-based prediction methods have been…

Computer Vision and Pattern Recognition · Computer Science 2021-10-28 Youngsaeng Jin , Jonghwan Hong , David Han , Hanseok Ko

We present Accel, a novel semantic video segmentation system that achieves high accuracy at low inference cost by combining the predictions of two network branches: (1) a reference branch that extracts high-detail features on a reference…

Computer Vision and Pattern Recognition · Computer Science 2019-07-09 Samvit Jain , Xin Wang , Joseph Gonzalez

Anticipating future actions in videos is challenging, as the observed frames provide only evidence of past activities, requiring the inference of latent intentions to predict upcoming actions. Existing transformer-based approaches, which…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Tsung-Ming Tai , Sofia Casarin , Andrea Pilzer , Werner Nutt , Oswald Lanz

We introduce the Action Transformer model for recognizing and localizing human actions in video clips. We repurpose a Transformer-style architecture to aggregate features from the spatiotemporal context around the person whose actions we…

Computer Vision and Pattern Recognition · Computer Science 2019-05-20 Rohit Girdhar , João Carreira , Carl Doersch , Andrew Zisserman

Diffusion Language Models (DLMs) have recently achieved significant success due to their any-order generation capabilities. However, existing inference methods typically rely on local, immediate-step metrics such as confidence or entropy…

Computation and Language · Computer Science 2025-12-03 Kecheng Chen , Ziru Liu , Xijia Tao , Hui Liu , Xinyu Fu , Suiyun Zhang , Dandan Tu , Lingpeng Kong , Rui Liu , Haoliang Li

Visual relationship detection can bridge the gap between computer vision and natural language for scene understanding of images. Different from pure object recognition tasks, the relation triplets of subject-predicate-object lie on an…

Computer Vision and Pattern Recognition · Computer Science 2018-09-18 Zhen Cui , Chunyan Xu , Wenming Zheng , Jian Yang

In this work, we address the problem of spatio-temporal action detection in temporally untrimmed videos. It is an important and challenging task as finding accurate human actions in both temporal and spatial space is important for analyzing…

Computer Vision and Pattern Recognition · Computer Science 2017-08-02 Zhenheng Yang , Jiyang Gao , Ram Nevatia

The integration of Diffusion Models into Intelligent Transportation Systems (ITS) is a substantial improvement in the detection of accidents. We present a novel hybrid model integrating guidance classification with diffusion techniques. By…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Siva Sai , Saksham Gupta , Vinay Chamola , Rajkumar Buyya

Detection of blood cells in microscopic images has become a major focus of medical image analysis, playing a crucial role in gaining valuable insights into a patient's health. Manual blood cell checks for disease detection are known to be…

Computer Vision and Pattern Recognition · Computer Science 2025-07-28 Ahmed Endris Hasen , Yang Shangming , Chiagoziem C. Ukwuoma , Biniyam Gashaw , Abel Zenebe Yutra