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Abnormal event detection or anomaly detection in surveillance videos is currently a challenge because of the diversity of possible events. Due to the lack of anomalous events at training time, anomaly detection requires the design of…

计算机视觉与模式识别 · 计算机科学 2024-09-17 Darshan Venkatrayappa

In this paper we compare the use of several features in the task of content filtering for video social networks, a very challenging task, not only because the unwanted content is related to very high-level semantic concepts (e.g.,…

计算机视觉与模式识别 · 计算机科学 2011-01-13 Eduardo Valle , Sandra de Avila , Antonio da Luz , Fillipe de Souza , Marcelo Coelho , Arnaldo Araújo

This paper addresses video anomaly detection problem for videosurveillance. Due to the inherent rarity and heterogeneity of abnormal events, the problem is viewed as a normality modeling strategy, in which our model learns object-centric…

计算机视觉与模式识别 · 计算机科学 2023-05-22 Khalil Bergaoui , Yassine Naji , Aleksandr Setkov , Angélique Loesch , Michèle Gouiffès , Romaric Audigier

This paper presents a baseline approach and an experimental protocol for a specific content verification problem: detecting discrepancies between the audio and video modalities in multimedia content. We first design and optimize an…

计算机视觉与模式识别 · 计算机科学 2024-05-02 Konstantinos Apostolidis , Jakob Abesser , Luca Cuccovillo , Vasileios Mezaris

Humans use context and scene knowledge to easily localize moving objects in conditions of complex illumination changes, scene clutter and occlusions. In this paper, we present a method to leverage human knowledge in the form of annotated…

计算机视觉与模式识别 · 计算机科学 2016-04-20 Archith J. Bency , S. Karthikeyan , Carter De Leo , Santhoshkumar Sunderrajan , B. S. Manjunath

Nowadays, mobile devices have become the natural substitute for the digital camera, as they capture everyday situations easily and quickly, encouraging users to express themselves through images and videos. These videos can be shared across…

密码学与安全 · 计算机科学 2024-02-14 Carlos Quinto Huamán , Ana Lucila Sandoval Orozco , Luis Javier García Villalba

Anomaly detection in surveillance videos has been recently gaining attention. Even though the performance of state-of-the-art methods on publicly available data sets has been competitive, they demand a massive amount of training data. Also,…

计算机视觉与模式识别 · 计算机科学 2020-04-07 Keval Doshi , Yasin Yilmaz

Person recognition at a distance entails recognizing the identity of an individual appearing in images or videos collected by long-range imaging systems such as drones or surveillance cameras. Despite recent advances in deep convolutional…

计算机视觉与模式识别 · 计算机科学 2022-12-20 Chrisopher B. Nalty , Neehar Peri , Joshua Gleason , Carlos D. Castillo , Shuowen Hu , Thirimachos Bourlai , Rama Chellappa

Generative models now produce images with such stunning realism that they can easily deceive the human eye. While this progress unlocks vast creative potential, it also presents significant risks, such as the spread of misinformation.…

计算机视觉与模式识别 · 计算机科学 2026-01-29 Yichi Zhang , Xiaogang Xu

The rapid advancement of generative AI has enabled the mass production of photorealistic synthetic images, blurring the boundary between authentic and fabricated visual content. This challenge is particularly evident in deepfake scenarios…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Minsun Jeon , Simon S. Woo

Many videos contain flickering artifacts. Common causes of flicker include video processing algorithms, video generation algorithms, and capturing videos under specific situations. Prior work usually requires specific guidance such as the…

计算机视觉与模式识别 · 计算机科学 2023-03-15 Chenyang Lei , Xuanchi Ren , Zhaoxiang Zhang , Qifeng Chen

Device fingerprints like sensor pattern noise (SPN) are widely used for provenance analysis and image authentication. Over the past few years, the rapid advancement in digital photography has greatly reshaped the pipeline of image capturing…

计算机视觉与模式识别 · 计算机科学 2020-05-08 Yijun Quan , Chang-Tsun Li , Yujue Zhou , Li Li

AI-generated images have become increasingly realistic and have garnered significant public attention. While synthetic images are intriguing due to their realism, they also pose an important misinformation threat. To address this new…

图像与视频处理 · 电气工程与系统科学 2023-08-23 Shengbang Fang , Tai D. Nguyen , Matthew C. Stamm

Video deblurring is essential task for autonomous driving, facial recognition, and security surveillance. Traditional methods directly estimate motion blur kernels, often introducing artifacts and leading to poor results. Recent approaches…

计算机视觉与模式识别 · 计算机科学 2025-01-22 Yang Tian , Fabio Brau , Giulio Rossolini , Giorgio Buttazzo , Hao Meng

Intelligent video-surveillance is currently an active research field in computer vision and machine learning techniques. It provides useful tools for surveillance operators and forensic video investigators. Person re-identification (PReID)…

计算机视觉与模式识别 · 计算机科学 2018-07-23 Bahram Lavi , Mehdi Fatan Serj , Ihsan Ullah

In recent years, deep learning-based video manipulation methods have become widely accessible to masses. With little to no effort, people can easily learn how to generate deepfake videos with only a few victims or target images. This…

计算机视觉与模式识别 · 计算机科学 2020-09-17 Shahroz Tariq , Sangyup Lee , Simon S. Woo

Vision-based action recognition is one of the most challenging research topics of computer vision and pattern recognition. A specific application of it, namely, detecting fights from surveillance cameras in public areas, prisons, etc., is…

计算机视觉与模式识别 · 计算机科学 2020-02-12 Şeymanur Aktı , Gözde Ayşe Tataroğlu , Hazım Kemal Ekenel

In today's world, the amount of data produced in every field has increased at an unexpected level. In the face of increasing data, the importance of data processing has increased remarkably. Our resource topic is on the processing of video…

计算机视觉与模式识别 · 计算机科学 2021-06-24 Talha Dilber , Mehmet Serdar Guzel , Erkan Bostanci

With advances in Generative Adversarial Networks (GANs) leading to dramatically-improved synthetic images and video, there is an increased need for algorithms which extend traditional forensics to this new category of imagery. While GANs…

计算机视觉与模式识别 · 计算机科学 2019-06-17 Michael Albright , Scott McCloskey

Synthetically-generated audios and videos -- so-called deep fakes -- continue to capture the imagination of the computer-graphics and computer-vision communities. At the same time, the democratization of access to technology that can create…

计算机视觉与模式识别 · 计算机科学 2021-01-29 Shruti Agarwal , Tarek El-Gaaly , Hany Farid , Ser-Nam Lim