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The Big Video Data generated in today's smart cities has raised concerns from its purposeful usage perspective, where surveillance cameras, among many others are the most prominent resources to contribute to the huge volumes of data, making…

Computer Vision and Pattern Recognition · Computer Science 2022-09-26 Nadia Mumtaz , Naveed Ejaz , Shabana Habib , Syed Muhammad Mohsin , Prayag Tiwari , Shahab S. Band , Neeraj Kumar

We introduce a new task, named video corpus visual answer localization (VCVAL), which aims to locate the visual answer in a large collection of untrimmed instructional videos using a natural language question. This task requires a range of…

Computer Vision and Pattern Recognition · Computer Science 2023-09-27 Bin Li , Yixuan Weng , Bin Sun , Shutao Li

In the field of audio-visual learning, most research tasks focus exclusively on short videos. This paper focuses on the more practical Dense Audio-Visual Event Localization (DAVEL) task, advancing audio-visual scene understanding for…

Computer Vision and Pattern Recognition · Computer Science 2024-12-19 Ziheng Zhou , Jinxing Zhou , Wei Qian , Shengeng Tang , Xiaojun Chang , Dan Guo

Automated surgical workflow analysis is crucial for education, research, and clinical decision-making, but the lack of annotated datasets hinders the development of accurate and comprehensive workflow analysis solutions. We introduce a…

Computer Vision and Pattern Recognition · Computer Science 2025-03-17 David Gastager , Ghazal Ghazaei , Constantin Patsch

The state-of-the-art performance for object detection has been significantly improved over the past two years. Besides the introduction of powerful deep neural networks such as GoogleNet and VGG, novel object detection frameworks such as…

Computer Vision and Pattern Recognition · Computer Science 2018-01-10 Kai Kang , Hongsheng Li , Junjie Yan , Xingyu Zeng , Bin Yang , Tong Xiao , Cong Zhang , Zhe Wang , Ruohui Wang , Xiaogang Wang , Wanli Ouyang

Novel view synthesis (NVS) and video prediction (VP) are typically considered disjoint tasks in computer vision. However, they can both be seen as ways to observe the spatial-temporal world: NVS aims to synthesize a scene from a new point…

Computer Vision and Pattern Recognition · Computer Science 2022-07-27 Yunzhi Zhang , Jiajun Wu

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…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Trong Nguyen Nguyen , Jean Meunier

Anomalous activity recognition deals with identifying the patterns and events that vary from the normal stream. In a surveillance paradigm, these events range from abuse to fighting and road accidents to snatching, etc. Due to the sparse…

Computer Vision and Pattern Recognition · Computer Science 2021-01-05 R. Maqsood , UI. Bajwa , G. Saleem , Rana H. Raza , MW. Anwar

The development of unsupervised Video Anomaly Detection (VAD) relies on technologies in the field of signal processing. Since the anomaly is quite ambiguous and unbounded, different detection demands may often be raised even in one…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Kai Cheng , Xinzhe Li , Lijuan Che

Visual texts embedded in videos carry rich semantic information, which is crucial for both holistic video understanding and fine-grained reasoning about local human actions. However, existing video understanding benchmarks largely overlook…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Zhoufaran Yang , Yan Shu , Jing Wang , Zhifei Yang , Yan Zhang , Yu Li , Keyang Lu , Gangyan Zeng , Shaohui Liu , Yu Zhou , Nicu Sebe

Anomaly detection has attracted considerable search attention. However, existing anomaly detection databases encounter two major problems. Firstly, they are limited in scale. Secondly, training sets contain only video-level labels…

Computer Vision and Pattern Recognition · Computer Science 2021-06-17 Boyang Wan , Wenhui Jiang , Yuming Fang , Zhiyuan Luo , Guanqun Ding

We propose a hybrid recurrent Video Colorization with Hybrid Generative Adversarial Network (VCGAN), an improved approach to video colorization using end-to-end learning. The VCGAN addresses two prevalent issues in the video colorization…

Computer Vision and Pattern Recognition · Computer Science 2023-05-09 Yuzhi Zhao , Lai-Man Po , Wing-Yin Yu , Yasar Abbas Ur Rehman , Mengyang Liu , Yujia Zhang , Weifeng Ou

We introduce a View-Volume convolutional neural network (VVNet) for inferring the occupancy and semantic labels of a volumetric 3D scene from a single depth image. The VVNet concatenates a 2D view CNN and a 3D volume CNN with a…

Computer Vision and Pattern Recognition · Computer Science 2018-06-15 Yu-Xiao Guo , Xin Tong

Detecting pedestrians accurately in urban scenes is significant for realistic applications like autonomous driving or video surveillance. However, confusing human-like objects often lead to wrong detections, and small scale or heavily…

Computer Vision and Pattern Recognition · Computer Science 2023-04-07 Mengyin Liu , Jie Jiang , Chao Zhu , Xu-Cheng Yin

Semi-supervised video anomaly detection (VAD) is a critical task in the intelligent surveillance system. However, an essential type of anomaly in VAD named scene-dependent anomaly has not received the attention of researchers. Moreover,…

Computer Vision and Pattern Recognition · Computer Science 2023-05-24 Congqi Cao , Yue Lu , Peng Wang , Yanning Zhang

Anomaly detection in surveillance videos is an important research problem in computer vision. In this paper, we propose ADNet, an anomaly detection network, which utilizes temporal convolutions to localize anomalies in videos. The model…

Computer Vision and Pattern Recognition · Computer Science 2021-04-15 Halil İbrahim Öztürk , Ahmet Burak Can

This paper aims to address the unsupervised video anomaly detection (VAD) problem, which involves classifying each frame in a video as normal or abnormal, without any access to labels. To accomplish this, the proposed method employs…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 Anil Osman Tur , Nicola Dall'Asen , Cigdem Beyan , Elisa Ricci

Time-series anomaly detection (TSAD) has played a vital role in a variety of fields, including healthcare, finance, and sensor-based condition monitoring. Prior methods, which mainly focus on training domain-specific models on numerical…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Zelin He , Sarah Alnegheimish , Matthew Reimherr

Visual in-context learning (VICL), as a new paradigm in computer vision, allows the model to rapidly adapt to various tasks with only a handful of prompts and examples. While effective, the existing VICL paradigm exhibits poor…

Computer Vision and Pattern Recognition · Computer Science 2025-03-28 Jiahao Xie , Alessio Tonioni , Nathalie Rauschmayr , Federico Tombari , Bernt Schiele

We propose ViDeNN: a CNN for Video Denoising without prior knowledge on the noise distribution (blind denoising). The CNN architecture uses a combination of spatial and temporal filtering, learning to spatially denoise the frames first and…

Computer Vision and Pattern Recognition · Computer Science 2019-04-25 Michele Claus , Jan van Gemert