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Fusion-based Multiview Distributed Video Coding

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Selected topics on distributed video coding

Mourad Ouaret

Distributed Video Coding (DVC) is a new paradigm for video compression based on the information theoretical results of Slepian and Wolf (SW), and Wyner and Ziv (WZ). While conventional coding has a rigid complexity allocation as most of the complex tasks a ...

EPFL2008

Detecting queues at vending machines: a statistical layered approach

Jean-Marc Odobez

In this report, a method for monitoring activity at a ticket machine is presented. While this work has been done in the specific context of Turin metro, the proposed model could be applied to other locations and tasks in video-surveillance. Monitoring the ...

IDIAP2008

Multiview Distributed Video Coding with Encoder Driven Fusion

Touradj Ebrahimi, Frédéric Dufaux, Mourad Ouaret

In this paper, a scheme based on multiview and Distributed Video Coding (DVC) is introduced. More specifically, a new fusion technique between temporal, homography and Disparity Compensation View Prediction (DCVP) side informations is introduced. For this ...

2007

Scrambling for Video Surveillance with Privacy

Touradj Ebrahimi

In this paper, we address the problem of scrambling regions of interest in a video sequence for the purpose of preserving privacy in video surveillance. We propose an efficient solution based on transform-domain scrambling. More specifically, the sign of s ...

IEEE2006

Privacy Enabling Technology for Video Surveillance

Touradj Ebrahimi, Frédéric Dufaux, Mourad Ouaret, Yousri Abdeljaoued

In this paper, we address the problem privacy in video surveillance. We propose an efficient solution based on transform-domain scrambling of regions of interest in a video sequence. More specifically, the sign of selected transform coefficients is flipped ...

IEEE2006

Application Dependent Video Segmentation Evaluation - A Case Study for Video Surveillance

Touradj Ebrahimi, Elisa Drelie Gelasca

Evaluation of the performance of video segmentation algorithms is important in both theoretical and practical considerations. This paper addresses the problem of video segmentation assessment, through both subjective and objective approaches, for the speci ...

2006

Detecting Abandoned Luggage Items in a Public Space

Daniel Gatica-Perez, Kevin Smith, Pedro Manuel Da Silva Quelhas

Visual surveillance is an important computer vision research problem. As more and more surveillance cameras appear around us, the demand for automatic methods for video analysis is increasing. Such methods have broad applications including surveillance for ...

2006

Detecting Abandoned Luggage Items in a Public Space

Daniel Gatica-Perez, Kevin Smith, Pedro Manuel Da Silva Quelhas

IDIAP2006

Recent Advances in MPEG-7 Cameras

Touradj Ebrahimi

We propose a smart camera which performs video analysis and generates an MPEG-7 compliant stream. By producing a content-based metadata description of the scene, the MPEG-7 camera extends the capabilities of conventional cameras. The metadata is then direc ...

IEEE2006

Critical Video Quality for Distributed Automated Video Surveillance

Large-scale distributed video surveillance systems pose new scalability challenges. Due to the large number of video sources in such systems, the amount of bandwidth required to transmit video streams for monitoring often strains the capability of the netw ...

2005