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A Framework for the Validation of Privacy Protection Solutions in Video Surveillance

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Crowdsourcing Approach for Evaluation of Privacy Filters in Video Surveillance

Touradj Ebrahimi

Extensive adoption of video surveillance, affecting many aspects of the daily life, alarms the concerned public about the increasing invasion into personal privacy. To address these concerns, many tools have been proposed for protection of personal privacy ...

2012

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Reza Shokri

Recent developments in information and communication technologies have been profound and life-changing. Most people are now equipped with smart phones with high computation power and communication capabilities. These devices can efficiently run multiple so ...

EPFL2012

MediaEval 2012 Visual Privacy Task: Applying Transform-domain Scrambling to Automatically Detected Faces

Touradj Ebrahimi, Aleksei Triastcyn

In this paper, we describe our approach and discuss evaluation results for the MediaEval 2012 Visual Privacy task. The goal of the task is to obscure faces of people visible in provided surveillance clips to preserve their personal privacy. We also additio ...

2012

Privacy Decision Making in the Travel Panopticon

Intelligent Transport Systems (ITS) have the potential to increase road-network capacities, reduce congestion and pollution, create shorter and more predictable journey times and significantly improve road-user safety. However, these technologies will also ...

2012

When Whereabouts is No Longer Thereabouts

Julien Freudiger

Modern mobile devices are fast, programmable and feature localization and wireless capabilities. These technological advances notably facilitate mobile access to Internet, development of mobile applications and sharing of personal information, such as loca ...

EPFL2011

Quantifying Location Privacy

Jean-Yves Le Boudec, Jean-Pierre Hubaux, Reza Shokri, Georgios Theodorakopoulos

It is a well-known fact that the progress of personal communication devices leads to serious concerns about privacy in general, and location privacy in particular. As a response to these issues, a number of Location-Privacy Protection Mechanisms (LPPMs) ha ...

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Unraveling an Old Cloak: k-anonymity for Location Privacy

Jean-Pierre Hubaux, Carmela González Troncoso, Julien Freudiger, Reza Shokri

There is a rich collection of literature that aims at protecting the privacy of users querying location-based services. One of the most popular location privacy techniques consists in cloaking users' locations such that k users appear as potential senders ...

ACM2010

Protecting Privacy in Multi-agent Optimization

Eric Zbinden

Many real-life optimization problems involve multiple entities, or agents (individuals, companies...), with their own private constraints and preferences, communicating with each other in order to find a solution that maximizes the overall public satisfact ...

2010

MobiCrowd: A Collaborative Location-Privacy Preserving Mobile Proxy

Jean-Pierre Hubaux, Panagiotis Papadimitratos, Reza Shokri

We demonstrate the first, to the best of our knowledge, LBS client that safeguards user privacy against non-trustworthy LBS servers. Our collaborative approach allows the client to obtain responses from its near-by peers rather than submitting the query to ...

2010

H.264/AVC Video Scrambling for Privacy Protection

Touradj Ebrahimi, Frédéric Dufaux

In this paper, we address the problem of privacy in video surveillance systems. More specifically, we consider the case of H.264/AVC which is the state-of-the-art in video coding. We assume that Regions of Interest (ROI), containing privacy-sensitive infor ...

2008