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Publications associées (81)

Improved Side Information Generation with Iterative Decoding and Frame Interpolation for Distributed Video Coding

Touradj Ebrahimi, Frédéric Dufaux, Mourad Ouaret

Distributed Video Coding (DVC) is a new paradigm in video coding, which is receiving a lot of interests nowadays. Side Information (SI) generation is a key function in the DVC decoder, and plays a key-role in determining the performance of the codec. This ...

2008

Motion Segmentation and Its Applications to Depth Ordering and Frame Rate Up-Conversion

Engin Türetken

In this thesis, layered motion segmentation problem and its applications to 2.5D scene representation and frame interpolation are investigated. As an initial step towards a layered design, building blocks of a generic motion segmentation algorithm; motion ...

2008

Hybrid Spatial and Temporal Error Concealment for Distributed Video Coding

Touradj Ebrahimi, Frédéric Dufaux, Mourad Ouaret

Distributed Video Coding (DVC) is based on a new paradigm in coding, which has received many interests recently. Among other features, DVC is said to provide better error resiliency. This paper proposes a hybrid spatial and temporal error concealment schem ...

2008

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

Analysis of Error Propagation Due to Frame Losses in a Distributed Video Coding System

Thomas Maugey

In this paper, we propose a theoretical model for the error propagation phenomenon generated by a frame loss in a distributed video coding framework. Using rate-distortion functions, we analyze the impact of a frame loss on the average distortion of a grou ...

2008

Adaptive Frame Interpolation for Wyner-Ziv Coding

Nikolaos Thomos

This paper addresses the problem of frame interpolation for Wyner-Ziv video coding. A novel frame interpolation method based on block-adaptive matching algorithm for motion estimation is presented. This scheme enables block size adaptation to local activit ...

2007

Codec-Independent Scalable Distributed Video Coding

Touradj Ebrahimi, Frédéric Dufaux, Mourad Ouaret

In this paper, we introduce novel schemes for scalable Distributed Video Coding (DVC), dealing with temporal, spatial and quality scalabilities. More specifically, conventional coding is used to obtain a base layer. DVC is then applied to generate enhancem ...

2007

Spatially encoded strategies in the execution of biomolecular-oriented 3D NMR experiments

Mor-Miri Mishkovsky

Three-dimensional nuclear magnetic resonance (3D NMR) provides one of the foremost analytical tools available for the elucidation of biomolecular structure, function and dynamics. Executing a 3D NMR experiment generally involves scanning a series of time-d ...

2007

Robust Transmission of Multi-View Video Streams Using Flexible Macroblock Ordering and Systematic LT codes

Nikolaos Thomos, Erdal Arikan

The transmission of fully compatible H.264/AVC multi-view video coded streams over packet erasure networks is examined. Macroblock classification into unequally important slice groups is considered using the flexible macroblock ordering (FMO) tool of H.264 ...

2007

Multi-stream Features Combination based on Dempster-Shafer Rule for LVCSR System

Hynek Hermansky, Fabio Valente

This paper investigates the combination of two streams of acoustic features. Extending our previous work on small vocabulary task, we show that combination based on Dempster-Shafer rule outperforms several classical rules like sum, product and inverse entr ...

2007

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