Publications by Touradj Ebrahimi

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This paper presents a video-based camera tracker that combines marker-based and feature point-based cues in a particle filter framework. The framework relies on their complementary performance. Marker-based trackers can robustly recover camera position and ...

In this paper, we propose a new Distributed Video Coding (DVC) architecture where motion estimation is performed both at the encoder and decoder, effectively combining global and local motion models. We show that the proposed approach improves significantl ...

Crosstalk and vergence-accommodation rivalry negatively impact the quality of experience (QoE) provided by stereoscopic displays. However, exploiting visual attention and adapting the 3D rendering process on the fly can reduce these drawbacks. In this pape ...

There is a need for affordable and easily deployable rendering and display solutions to take full advantage of light field imaging. In particular, the research community needs ways to better assess the impact of various light field imaging technologies bas ...

In this paper a procedure for subjective evaluation of the new JPEG XR codec for compression of still pictures is described in details. The new algorithm has been compared to the existing JPEG and JPEG 2000 standards when considering compression of high re ...

Free-viewpoint television is expected to create a more natural and interactive viewing experience by providing the ability to interactively change the viewpoint to enjoy a 3D scene. To render new virtual viewpoints, free-viewpoint systems rely on view synt ...

A convergence of trends is shifting the focus of quality assessment from compliance with system design goals to fulfillment of user needs or expectations in different contexts. ...

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

Contrast sensitivity of the human visual system to visual stimuli can be significantly affected by several mechanisms, e. g., vision foveation and attention. Existing studies on foveation based video quality assessment only take into account static foveati ...

A region tracking technique with particular emphasis on rotation robustness is presented. It is based on region matching divided in two consecutive steps, gradient orientation histogram matching and template matching through Normalised Cross Correlation (N ...

Cet ouvrage dresse un etat des lieux complet des enjeux et problematiques lies a la securite des donnees et des systemes multimedia : problemes de cryptage, PKI, biometrie, dimension juridique de la securite des systemes d'information...

Touradj Ebrahimi

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Combination of video-based camera trackers using a dynamically adapted particle filter

Encoder and Decoder Side Global and Local Motion Estimation for Distributed Video Coding

Error Correction for DNA-Based Image Storage

Phase-Amplitude Coupling between EEG and EDA while experiencing multimedia content

Single trial classification of EEG and peripheral physiological signals for recognition of emotions induced by music videos

Subjective evaluation of two stereoscopic imaging systems exploiting visual attention to improve 3D quality of experience

A Rendering Solution to Display Light Field in Virtual Reality

Subjective evaluation of JPEG XR image compression

Impact of Acquisition Distortion on the Quality of Stereoscopic Images

Free-Viewpoint Video Sequences: a New Challenge for Objective Quality Metrics

Quality of multimedia experience

On the impact of spatial rendering on point cloud subjective visual quality assessment

3D video technologies and services

Toward a New Assessment of Quality

Subjective Study of Privacy Filters in Video Surveillance

Attention Driven Foveated Video Quality Assessment

Orientation histogram-based matching for Region Tracking

H.264/AVC video database for the evaluation of quality metrics

Driver-response relationships between frontal EEG and Respiration during affective audiovisual stimuli

Enjeux de la securite multimedia