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Anomaly detection is a significant problem faced in several research areas. Detecting and correctly classifying something unseen as anomalous is a challenging problem that has been tackled in many different manners over the years.…

Machine Learning · Computer Science 2021-09-15 Federico Di Mattia , Paolo Galeone , Michele De Simoni , Emanuele Ghelfi

In recent years, advanced image editing and generation methods have rapidly evolved, making detecting and locating forged image content increasingly challenging. Most existing image forgery detection methods rely on identifying the edited…

Computer Vision and Pattern Recognition · Computer Science 2025-04-11 Hengrun Zhao , Yunzhi Zhuge , Yifan Wang , Lijun Wang , Huchuan Lu , Yu Zeng

Anomaly detection seeks to identify unusual phenomena, a central task in science and industry. The task is inherently unsupervised as anomalies are unexpected and unknown during training. Recent advances in self-supervised representation…

Machine Learning · Computer Science 2022-10-20 Tal Reiss , Niv Cohen , Eliahu Horwitz , Ron Abutbul , Yedid Hoshen

Face attributes are interesting due to their detailed description of human faces. Unlike prior researches working on attribute prediction, we address an inverse and more challenging problem called face attribute manipulation which aims at…

Computer Vision and Pattern Recognition · Computer Science 2017-04-13 Wei Shen , Rujie Liu

Facial action unit (AU) detection, aiming to classify AU present in the facial image, has long suffered from insufficient AU annotations. In this paper, we aim to mitigate this data scarcity issue by learning AU representations from a large…

Computer Vision and Pattern Recognition · Computer Science 2024-03-07 Yong Li , Shiguang Shan

The generative adversarial network (GAN) exhibits great superiority in the face attribute synthesis task. However, existing methods have very limited effects on the expansion of new attributes. To overcome the limitations of a single…

Computer Vision and Pattern Recognition · Computer Science 2020-04-16 Xin Ning , Shaohui Xu , Xiaoli Dong , Weijun Li , Fangzhe Nan , Yuanzhou Yao

In this work, we explore Self-supervised Learning (SSL) as an auxiliary task to blend the texture-based local descriptors into feature modelling for efficient face analysis. Combining a primary task and a self-supervised auxiliary task is…

Computer Vision and Pattern Recognition · Computer Science 2024-11-06 Shukesh Reddy , Nishit Poddar , Srijan Das , Abhijit Das

GAN-based techniques that generate and synthesize realistic faces have caused severe social concerns and security problems. Existing methods for detecting GAN-generated faces can perform well on limited public datasets. However, images from…

Computer Vision and Pattern Recognition · Computer Science 2022-02-15 Hui Guo , Shu Hu , Xin Wang , Ming-Ching Chang , Siwei Lyu

Face parsing is a fundamental task in computer vision, enabling applications such as identity verification, facial editing, and controllable image synthesis. However, existing face parsing models often lack fairness and robustness, leading…

Computer Vision and Pattern Recognition · Computer Science 2025-02-10 Sophia J. Abraham , Jonathan D. Hauenstein , Walter J. Scheirer

Anomaly detection is being regarded as an unsupervised learning task as anomalies stem from adversarial or unlikely events with unknown distributions. However, the predictive performance of purely unsupervised anomaly detection often fails…

Machine Learning · Computer Science 2014-01-27 Nico Goernitz , Marius Micha Kloft , Konrad Rieck , Ulf Brefeld

Recent studies in deepfake detection have yielded promising results when the training and testing face forgeries are from the same dataset. However, the problem remains challenging when one tries to generalize the detector to forgeries…

Computer Vision and Pattern Recognition · Computer Science 2022-04-04 Liang Chen , Yong Zhang , Yibing Song , Lingqiao Liu , Jue Wang

Conditional GANs are at the forefront of natural image synthesis. The main drawback of such models is the necessity for labeled data. In this work we exploit two popular unsupervised learning techniques, adversarial training and…

Machine Learning · Computer Science 2019-04-10 Ting Chen , Xiaohua Zhai , Marvin Ritter , Mario Lucic , Neil Houlsby

We use CNNs to build a system that both classifies images of faces based on a variety of different facial attributes and generates new faces given a set of desired facial characteristics. After introducing the problem and providing context…

Computer Vision and Pattern Recognition · Computer Science 2017-01-10 Hardie Cate , Fahim Dalvi , Zeshan Hussain

Due to their convenience and high accuracy, face recognition systems are widely employed in governmental and personal security applications to automatically recognise individuals. Despite recent advances, face recognition systems have shown…

Computer Vision and Pattern Recognition · Computer Science 2024-08-22 Mathias Ibsen , Lázaro J. González-Soler , Christian Rathgeb , Pawel Drozdowski , Marta Gomez-Barrero , Christoph Busch

Attribute guided face image synthesis aims to manipulate attributes on a face image. Most existing methods for image-to-image translation can either perform a fixed translation between any two image domains using a single attribute or…

Computer Vision and Pattern Recognition · Computer Science 2019-05-02 Behzad Bozorgtabar , Mohammad Saeed Rad , Hazım Kemal Ekenel , Jean-Philippe Thiran

Our work focuses on unsupervised and generative methods that address the following goals: (a) learning unsupervised generative representations that discover latent factors controlling image semantic attributes, (b) studying how this ability…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 William Paul , I-Jeng Wang , Fady Alajaji , Philippe Burlina

Detecting diffusion-generated images has recently grown into an emerging research area. Existing diffusion-based datasets predominantly focus on general image generation. However, facial forgeries, which pose a more severe social risk, have…

Computer Vision and Pattern Recognition · Computer Science 2024-01-30 Harry Cheng , Yangyang Guo , Tianyi Wang , Liqiang Nie , Mohan Kankanhalli

Recent advancements in generative artificial intelligence (AI) have raised concerns about their potential to create convincing fake social media accounts, but empirical evidence is lacking. In this paper, we present a systematic analysis of…

Computers and Society · Computer Science 2024-09-27 Kai-Cheng Yang , Danishjeet Singh , Filippo Menczer

With the broad use of face recognition, its weakness gradually emerges that it is able to be attacked. So, it is important to study how face recognition networks are subject to attacks. In this paper, we focus on a novel way to do attacks…

Computer Vision and Pattern Recognition · Computer Science 2018-12-03 Qing Song , Yingqi Wu , Lu Yang

Face anti-spoofing is the crucial step to prevent face recognition systems from a security breach. Previous deep learning approaches formulate face anti-spoofing as a binary classification problem. Many of them struggle to grasp adequate…

Computer Vision and Pattern Recognition · Computer Science 2018-03-30 Yaojie Liu , Amin Jourabloo , Xiaoming Liu