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The task of privacy-preserving face recognition (PPFR) currently faces two major unsolved challenges: (1) existing methods are typically effective only on specific face recognition models and struggle to generalize to black-box face…

Computer Vision and Pattern Recognition · Computer Science 2024-12-12 Yuanwei Liu , Chengyu Jia , Ruqi Xiao , Xuemai Jia , Hui Wei , Kui Jiang , Zheng Wang

Biometric authentication systems are crucial for security, but developing them involves various complexities, including privacy, security, and achieving high accuracy without directly storing pure biometric data in storage. We introduce an…

Computer Vision and Pattern Recognition · Computer Science 2026-04-13 Dmytro Zakharov , Oleksandr Kuznetsov , Emanuele Frontoni , Natalia Kryvinska

The capacity to recognize faces under varied poses is a fundamental human ability that presents a unique challenge for computer vision systems. Compared to frontal face recognition, which has been intensively studied and has gradually…

Computer Vision and Pattern Recognition · Computer Science 2016-07-19 Changxing Ding , Dacheng Tao

Rounding confidence score is considered trivial but a simple and effective countermeasure to stop gradient descent based image reconstruction attacks. However, its capability in the face of more sophisticated reconstruction attacks is an…

Computer Vision and Pattern Recognition · Computer Science 2020-09-07 Hadi Mansourifar , Weidong Shi

With the advancement of face recognition (FR) systems, privacy-preserving face recognition (PPFR) systems have gained popularity for their accurate recognition, enhanced facial privacy protection, and robustness to various attacks. However,…

Computer Vision and Pattern Recognition · Computer Science 2026-02-16 Dong Han , Yong Li , Joachim Denzler

Biometric authentication methods, representing the "something you are" scheme, are considered the most secure approach for gaining access to protected resources. Recent attacks using Machine Learning techniques demand a serious systematic…

Computer Vision and Pattern Recognition · Computer Science 2022-03-14 Arbena Musa , Kamer Vishi , Blerim Rexha

In this paper we address the issues of using edge detection techniques on facial images to produce cancellable biometric templates and a novel method for template verification against tampering. With increasing use of biometrics, there is a…

Computer Vision and Pattern Recognition · Computer Science 2014-01-23 Manoj Krishnaswamy , G. Hemantha Kumar

Biometric authentication systems play a crucial role in modern security systems. However, maintaining the balance of privacy and integrity of stored biometrics derivative data while achieving high recognition accuracy is often challenging.…

Computer Vision and Pattern Recognition · Computer Science 2024-08-29 Dmytro Zakharov , Oleksandr Kuznetsov , Emanuele Frontoni

Generally, privacy-enhancing face recognition systems are designed to offer permanent protection of face embeddings. Recently, so-called soft-biometric privacy-enhancement approaches have been introduced with the aim of canceling…

Computer Vision and Pattern Recognition · Computer Science 2023-10-05 Daile Osorio-Roig , Paul A. Gerlitz , Christian Rathgeb , Christoph Busch

Feature selection is the process of sieving features, in which informative features are separated from the redundant and irrelevant ones. This process plays an important role in machine learning, data mining and bioinformatics. However,…

Cryptography and Security · Computer Science 2020-08-19 Javad Rahimipour Anaraki , Saeed Samet

Nowadays, the adoption of face recognition for biometric authentication systems is usual, mainly because this is one of the most accessible biometric modalities. Techniques that rely on trespassing these kind of systems by using a forged…

Computer Vision and Pattern Recognition · Computer Science 2019-02-11 Rodrigo Bresan , Allan Pinto , Anderson Rocha , Carlos Beluzo , Tiago Carvalho

The use of social media websites and applications has become very popular and people share their photos on these networks. Automatic recognition and tagging of people's photos on these networks has raised privacy preservation issues and…

Computer Vision and Pattern Recognition · Computer Science 2022-01-11 Mohammad Hossein Khojaste , Nastaran Moradzadeh Farid , Ahmad Nickabadi

Digital entities such as AI agents and humanoid robots increasingly operate alongside real humans, yet their identity infrastructure is based on credentials rather than embodied biometric identity. We introduce Biometric Identity…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Yuyang Ji , Yixuan Shen , Anil Jain , Xiaoming Liu , Feng Liu

Face recognition models have made substantial progress due to advances in deep learning and the availability of large-scale datasets. However, reliance on massive annotated datasets introduces challenges related to training computational…

Computer Vision and Pattern Recognition · Computer Science 2025-05-22 Eduarda Caldeira , Jan Niklas Kolf , Naser Damer , Fadi Boutros

Face recognition (FR) stands as one of the most crucial applications in computer vision. The accuracy of FR models has significantly improved in recent years due to the availability of large-scale human face datasets. However, directly…

Computer Vision and Pattern Recognition · Computer Science 2025-02-28 Xiao Lin , Yuge Huang , Jianqing Xu , Yuxi Mi , Shuigeng Zhou , Shouhong Ding

The increasingly pervasive facial recognition (FR) systems raise serious concerns about personal privacy, especially for billions of users who have publicly shared their photos on social media. Several attempts have been made to protect…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Jiang Liu , Chun Pong Lau , Zhongliang Guo , Yuxiang Guo , Zhaoyang Wang , Rama Chellappa

This paper investigates the dependence of existing state-of-the-art person re-identification models on the presence and visibility of human faces. We apply a face detection and blurring algorithm to create anonymized versions of several…

Computer Vision and Pattern Recognition · Computer Science 2020-10-14 Julia Dietlmeier , Joseph Antony , Kevin McGuinness , Noel E. O'Connor

Language-image pre-training is an effective technique for learning powerful representations in general domains. However, when directly turning to person representation learning, these general pre-training methods suffer from unsatisfactory…

Computer Vision and Pattern Recognition · Computer Science 2024-05-30 Jialong Zuo , Jiahao Hong , Feng Zhang , Changqian Yu , Hanyu Zhou , Changxin Gao , Nong Sang , Jingdong Wang

In the recent past, different researchers have proposed privacy-enhancing face recognition systems designed to conceal soft-biometric attributes at feature level. These works have reported impressive results, but generally did not consider…

Computer Vision and Pattern Recognition · Computer Science 2022-05-18 Dailé Osorio-Roig , Christian Rathgeb , Pawel Drozdowski , Philipp Terhörst , Vitomir Štruc , Christoph Busch

Face Anti-spoofing (FAS) is essential to secure face recognition systems from various physical attacks. However, most of the studies lacked consideration of long-distance scenarios. Specifically, compared with FAS in traditional scenes such…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Hao Fang , Ajian Liu , Jun Wan , Sergio Escalera , Hugo Jair Escalante , Zhen Lei