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Publishing physical activity data can facilitate reproducible health-care research in several areas such as population health management, behavioral health research, and management of chronic health problems. However, publishing such data…

Cryptography and Security · Computer Science 2019-08-22 Pooja Parameshwarappa , Zhiyuan Chen , Gunes Koru

The advent of data-driven technology solutions is accompanied by an increasing concern with data privacy. This is of particular importance for human-centered image recognition tasks, such as pedestrian detection, re-identification, and…

Computer Vision and Pattern Recognition · Computer Science 2023-06-23 Maxim Maximov , Tim Meinhardt , Ismail Elezi , Zoe Papakipos , Caner Hazirbas , Cristian Canton Ferrer , Laura Leal-Taixé

Privacy concerns around ever increasing number of cameras are increasing in today's digital age. Although existing anonymization methods are able to obscure identity information, they often struggle to preserve the utility of the images. In…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Han-Wei Kung , Tuomas Varanka , Terence Sim , Nicu Sebe

There is a known tension between the need to analyze personal data to drive business and privacy concerns. Many data protection regulations, including the EU General Data Protection Regulation (GDPR) and the California Consumer Protection…

Cryptography and Security · Computer Science 2022-02-02 Abigail Goldsteen , Gilad Ezov , Ron Shmelkin , Micha Moffie , Ariel Farkash

Face images are a rich source of information that can be used to identify individuals and infer private information about them. To mitigate this privacy risk, anonymizations employ transformations on clear images to obfuscate sensitive…

Cryptography and Security · Computer Science 2024-05-08 Julian Todt , Simon Hanisch , Thorsten Strufe

Historically, much of the research in understanding, modeling, and mining human trajectory data has focused on where an individual stays. Thus, the focus of existing research has been on where a user goes. On the other hand, the study of…

Machine Learning · Computer Science 2024-10-01 Lance Kennedy , Andreas Züfle

The widespread sharing of face images on social media platforms and in large-scale datasets raises pressing privacy concerns, as biometric identifiers can be exploited without consent. Face anonymization seeks to generate realistic facial…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Luigi Celona , Simone Bianco , Raimondo Schettini

Facial motion capture in mixed reality headsets enables real-time avatar animation, allowing users to convey non-verbal cues during virtual interactions. However, as facial motion data constitutes a behavioral biometric, its use raises…

Cryptography and Security · Computer Science 2025-07-16 Adriano Castro , Simon Hanisch , Matin Fallahi , Thorsten Strufe

Tracking-by-detection has become the de facto standard approach to people tracking. To increase robustness, some approaches incorporate re-identification using appearance models and regressing motion offset, which requires costly identity…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Martin Engilberge , F. Wilke Grosche , Pascal Fua

Anonymization plays a key role in protecting sensible information of individuals in real world datasets. Self-driving cars for example need high resolution facial features to track people and their viewing direction to predict future…

Computer Vision and Pattern Recognition · Computer Science 2024-10-18 Pascal Zwick , Kevin Roesch , Marvin Klemp , Oliver Bringmann

Case-based explanations are an intuitive method to gain insight into the decision-making process of deep learning models in clinical contexts. However, medical images cannot be shared as explanations due to privacy concerns. To address this…

Computer Vision and Pattern Recognition · Computer Science 2023-11-09 Helena Montenegro , Jaime S. Cardoso

Continuous authentication utilizes automatic recognition of certain user features for seamless and passive authentication without requiring user attention. Such features can be divided into categories of physiological biometrics and…

Cryptography and Security · Computer Science 2022-09-15 Ahmed Fraz Baig , Sigurd Eskeland

Latent diffusion models can be used as a powerful augmentation method to artificially extend datasets for enhanced training. To the human eye, these augmented images look very different to the originals. Previous work has suggested to use…

Computer Vision and Pattern Recognition · Computer Science 2025-04-09 Julian Lorenz , Katja Ludwig , Valentin Haug , Rainer Lienhart

Human gait is considered a unique biometric identifier which can be acquired in a covert manner at a distance. However, models trained on existing public domain gait datasets which are captured in controlled scenarios lead to drastic…

Computer Vision and Pattern Recognition · Computer Science 2023-02-09 Shaoxiong Zhang , Yunhong Wang , Tianrui Chai , Annan Li , Anil K. Jain

The unprecedented capture and application of face images raise increasing concerns on anonymization to fight against privacy disclosure. Most existing methods may suffer from the problem of excessive change of the identity-independent…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Zhenzhong Kuang , Xiaochen Yang , Yingjie Shen , Chao Hu , Jun Yu

The increasing demand for large-scale visual data, coupled with strict privacy regulations, has driven research into anonymization methods that hide personal identities without seriously degrading data quality. In this paper, we explore the…

Computer Vision and Pattern Recognition · Computer Science 2025-05-28 Mustafa İzzet Muştu , Hazım Kemal Ekenel

Current face anonymization techniques often depend on identity loss calculated by face recognition models, which can be inaccurate and unreliable. Additionally, many methods require supplementary data such as facial landmarks and masks to…

Computer Vision and Pattern Recognition · Computer Science 2024-11-04 Han-Wei Kung , Tuomas Varanka , Sanjay Saha , Terence Sim , Nicu Sebe

We introduce a novel approach to user authentication called Motion ID. The method employs motion sensing provided by inertial measurement units (IMUs), using it to verify the persons identity via short time series of IMU data captured by…

Privacy-preserving computer vision is an important emerging problem in machine learning and artificial intelligence. Prevalent methods tackling this problem use differential privacy (DP) or obfuscation techniques to protect the privacy of…

Computer Vision and Pattern Recognition · Computer Science 2024-12-20 David Schneider , Sina Sajadmanesh , Vikash Sehwag , Saquib Sarfraz , Rainer Stiefelhagen , Lingjuan Lyu , Vivek Sharma

Mining health data can lead to faster medical decisions, improvement in the quality of treatment, disease prevention, reduced cost, and it drives innovative solutions within the healthcare sector. However, health data is highly sensitive…

Cryptography and Security · Computer Science 2022-04-28 Iyiola E. Olatunji , Jens Rauch , Matthias Katzensteiner , Megha Khosla