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With the increased popularity of smartphones, various security threats and privacy leakages targeting them are discovered and investigated. In this work, we present \ourprotocoltight, a framework to authenticate users silently and…

Cryptography and Security · Computer Science 2013-09-03 Cheng Bo , Lan Zhang , Xiang-Yang Li

With current technology, a number of entities have access to user mobility traces at different levels of spatio-temporal granularity. At the same time, users frequently reveal their location through different means, including geo-tagged…

Cryptography and Security · Computer Science 2018-11-16 Apostolos Pyrgelis , Nicolas Kourtellis , Ilias Leontiadis , Joan Serrà , Claudio Soriente

The increasing capabilities of deep neural networks for re-identification, combined with the rise in public surveillance in recent years, pose a substantial threat to individual privacy. Event cameras were initially considered as a…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Katharina Bendig , René Schuster , Nicole Thiemer , Karen Joisten , Didier Stricker

An increasing amount of mobility data is being collected every day by different means, e.g., by mobile phone operators. This data is sometimes published after the application of simple anonymization techniques, which might lead to severe…

Cryptography and Security · Computer Science 2016-11-17 Vincent Primault , Sonia Ben Mokhtar , Lionel Brunie

Virtual reality (VR) sensors capture large amounts of user data, including body motion and eye tracking, that contain personally identifying information. While privacy-enhancing techniques can obfuscate this data, incomplete privacy…

Human-Computer Interaction · Computer Science 2025-03-07 Samantha Aziz , Oleg Komogortsev

Due to the pervasiveness of image capturing devices in every-day life, images of individuals are routinely captured. Although this has enabled many benefits, it also infringes on personal privacy. A promising direction in research on…

Cryptography and Security · Computer Science 2021-02-23 William Croft , Jörg-Rüdiger Sack , Wei Shi

Anonymization is a foundational principle of data privacy regulation, yet its practical application remains riddled with ambiguity and inconsistency. This paper introduces the concept of anonymity-washing -- the misrepresentation of the…

Cryptography and Security · Computer Science 2025-08-27 Szivia Lestyán , William Letrone , Ludovica Robustelli , Gergely Biczók

Motion imitation is a promising approach for humanoid locomotion, enabling agents to acquire humanlike behaviors. Existing methods typically rely on high-quality motion capture datasets such as AMASS, but these are scarce and expensive,…

Robotics · Computer Science 2025-10-31 Kyungmin Lee , Sibeen Kim , Minho Park , Hyunseung Kim , Dongyoon Hwang , Hojoon Lee , Jaegul Choo

For a dataset of label-count pairs, an anonymized histogram is the multiset of counts. Anonymized histograms appear in various potentially sensitive contexts such as password-frequency lists, degree distribution in social networks, and…

Machine Learning · Computer Science 2020-01-15 Ananda Theertha Suresh

Modeling and predicting human mobility trajectories in urban areas is an essential task for various applications. The recent availability of large-scale human movement data collected from mobile devices have enabled the development of…

Social and Information Networks · Computer Science 2023-07-10 Takahiro Yabe , Kota Tsubouchi , Toru Shimizu , Yoshihide Sekimoto , Kaoru Sezaki , Esteban Moro , Alex Pentland

Publishing person-specific transactions in an anonymous form is increasingly required by organizations. Recent approaches ensure that potentially identifying information (e.g., a set of diagnosis codes) cannot be used to link published…

Databases · Computer Science 2010-01-26 Grigorios Loukides , Aris Gkoulalas-Divanis , Bradley Malin

Recent advances in motion generation show remarkable progress. However, several limitations remain: (1) Existing pose-guided character motion transfer methods merely replicate motion without learning its style characteristics, resulting in…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Ziyun Qian , Runyu Xiao , Shuyuan Tu , Wei Xue , Dingkang Yang , Mingcheng Li , Dongliang Kou , Minghao Han , Zizhi Chen , Lihua Zhang

In response to rising societal awareness of privacy concerns, face anonymization techniques have advanced, including the emergence of face-swapping methods that replace one identity with another. Achieving a balance between anonymity and…

Computer Vision and Pattern Recognition · Computer Science 2025-09-25 Haruka Kumagai , Leslie Wöhler , Satoshi Ikehata , Kiyoharu Aizawa

As wearable and mobile devices become increasingly embedded in daily life, they offer a practical way to continuously sense human motion in the wild. But inertial signals are highly dependent on the sensing setup, including body location,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Baiyu Chen , Zechen Li , Wilson Wongso , Lihuan Li , Xiachong Lin , Hao Xue , Benjamin Tag , Flora Salim

This paper introduces Motion Personalization, a new task that generates personalized motions aligned with text descriptions using several basic motions containing Persona. To support this novel task, we introduce a new large-scale motion…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Boeun Kim , Hea In Jeong , JungHoon Sung , Yihua Cheng , Jeongmin Lee , Ju Yong Chang , Sang-Il Choi , Younggeun Choi , Saim Shin , Jungho Kim , Hyung Jin Chang

Motion retargeting is the long-standing problem in character animation that consists in transferring and adapting the motion of a source character to another target character. A typical application is the creation of motion sequences from…

Graphics · Computer Science 2023-06-16 Lucas Mourot , Ludovic Hoyet , François Le Clerc , Pierre Hellier

We address the problem of human motion tracking by registering a surface to 3-D data. We propose a method that iteratively computes two things: Maximum likelihood estimates for both the kinematic and free-motion parameters of a kinematic…

Computer Vision and Pattern Recognition · Computer Science 2023-11-21 Radu Horaud , Matti Niskanen , Guillaume Dewaele , Edmond Boyer

Generative Adversarial Networks (GANs) are widely adapted for anonymization of human figures. However, current state-of-the-art limit anonymization to the task of face anonymization. In this paper, we propose a novel anonymization framework…

Computer Vision and Pattern Recognition · Computer Science 2022-11-18 Håkon Hukkelås , Frank Lindseth

Disentangling facial movements from other facial characteristics, particularly from facial identity, remains a challenging task, as facial movements display great variation between individuals. In this paper, we aim to characterize…

Computer Vision and Pattern Recognition · Computer Science 2022-11-16 Yanis Tazi , Michael Berger , Winrich A. Freiwald

Understanding human motion beyond surface kinematics is crucial for motion analysis, rehabilitation, and injury risk assessment. However, progress in this domain is limited by the lack of large-scale datasets with biomechanical annotations,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-15 Yujun Huo , He Zhang , Chentao Song , Honglin Song , Zongyu Zuo , Tao Yu