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Behavioral dynamics for pedestrians

Publications associées (46)

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Evaluation of privacy in high dynamic range video sequences

Touradj Ebrahimi, Martin Rerabek, Lin Yuan

The ability of high dynamic range (HDR) to capture details in environments with high contrast has a significant impact on privacy in video surveillance. However, the extent to which HDR imaging affects privacy, when compared to a typical low dynamic range ...

Spie-Int Soc Optical Engineering2014

Automated Bobbing and Phase Analysis to Measure Walking Entrainment

Jean-Marc Odobez, Rémi Emonet

In this paper, we investigate the influence of music on human walking behaviors in a public setting monitored by surveillance cameras. To this end, we propose a novel algorithm to characterize the frequency and phase of the walk. It relies on a human-by-de ...

2014

Motion Interaction Field for Accident Detection in Traffic Surveillance Video

Kwang Moo Yi, Seungryong Kim

This paper presents a novel method for modeling of interaction among multiple moving objects to detect traffic accidents. The proposed method to model object interactions is motivated by the motion of water waves responding to moving objects on water surfa ...

2014

A framework for objective evaluation of privacy filters in video surveillance

Touradj Ebrahimi

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

Spie-Int Soc Optical Engineering2013

Using Warping for Privacy Protection in Video Surveillance

Touradj Ebrahimi

The widespread use of digital video surveillance systems has also increased the concerns for violation of privacy rights. Since video surveillance systems are invasive, it is a challenge to find an acceptable balance between privacy of the public under sur ...

2013

Using Face Morphing to Protect Privacy

Touradj Ebrahimi

2013

Evaluation of Visual privacy Filters Impact on Video Surveillance Intelligibility

Touradj Ebrahimi, Francesca De Simone

Since privacy issues are becoming important with growth of the video surveillance, many tools are proposed for protection of personal privacy in the video. However, little is understood regarding the effectiveness of such tools and their effect on the unde ...

2012

Reducing Frame Rate for Object Tracking

Object tracking is commonly used in video surveillance, but typically video with full frame rate is sent. We previously have shown that full frame rate is not needed, but it is unclear what the appropriate frame rate to send or whether we can further reduc ...

2010

Towards Generic Detection of Unusual Events in Video Surveillance

Touradj Ebrahimi, Frédéric Dufaux, Ivan Ivanov

In this paper, we consider the challenging problem of unusual event detection in video surveillance systems. The proposed approach makes a step toward generic and automatic detection of unusual events in terms of velocity and acceleration. At first, the mo ...

2009

Multi-view video segmentation and tracking for video surveillance

Touradj Ebrahimi, Frédéric Dufaux, Gelareh Mohammadi, Thien Ha Minh

Tracking moving objects is a critical step for smart video surveillance systems. Despite the complexity increase, multiple camera systems exhibit the undoubted advantages of covering wide areas and handling the occurrence of occlusions by exploiting the di ...

2009