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Corinne Le Buhan

Corinne Le Buhan
IPStudies SARL

Doctor of Engineering

About

22
Publications
2,653
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166
Citations

Publications

Publications (22)
Article
Despite the strong presence of Chinese scientists in genome-editing research, little attention has been paid tothe legal, economic, and scientific development of patented CRISPR technologies in China. In this study, we focuson CRISPR patent documents from academic and industrial Chinese players to assess their positioning on thisbreakthrough techno...
Book
Full-text available
Dear Reader, There are a lot of different ways to anticipate the future, ranging from the basic question if it is worth the challenge to the more proactive attitude of building it. One thing however that is absolutely sure is that if you don’t try, you will always have to react rather than to take advantage of a possible opportunity. This is someth...
Patent
Full-text available
The method traces the origin of a (illegally) distributed video material. It fingerprints a data object A having a nominal stream format F to provide a fingerprinted data object B including a pre-fingerprinting forensic luring process.
Patent
Full-text available
A method to force a multimedia unit to update an application for viewing broadcast conditional access content by linking said update to an update of the conditional access module firmware. The firmware update is initialized by means of version information transmitted in the content stream. In particular, this version information may be included in...
Conference Paper
This paper discusses the optimization of security messaging in pay TV protocols applied over broadcast networks, in particular in the context of emerging mobile TV applications. In the latter environments, scarce bandwidth and limited handheld capability are particularly constraining in designing an efficient yet robust Conditional Access System. A...
Article
While the emerging MPEG-4 standard has raised the need for efficient object-based compression, the future MPEG-7 standard motivates further research in the field of progressive, quality-scalable, and semantic representations for indexing and retrieval applications in particular. In this paper a mesh-based video compression scheme is proposed that i...
Article
Full-text available
In this paper, we present an overview of the dynamic coding approach, together with recent developments carried out in this framework. Dynamic coding is a general approach to the problem of visual data representation in the context of multimedia. This approach consists in a dynamic combination of multiple representation models and segmentation stra...
Article
Full-text available
In this paper, a new approach to the problem of visual data representation in the framework of multimedia is introduced. The approach, named dynamic coding, consists in a dynamic combination of multiple representation models and segmentation strategies. Given an application, these two degrees of freedom are assembled so as to yield a specific profi...
Article
This paper considers the problem of data recovery and reconstruction in erroneous MPEG-2 video sequences. The basic resynchronization point in MPEG-2 video bitstream is the slice header, a slice usually denoting a full row of macroblocks. When an error occurs, the rest of the damaged slice is lost up to the next slice. In order to improve the effic...
Article
Full-text available
This paper describes an extension of a dynamic video coding scheme to provide object scalable functionalities. As a particular instance of the dynamic coding concept, the coding scheme considered here jointly optimizes video data partition and representation modes. Indeed, as there exists no universal video coding method, dynamic coding insures the...
Article
This paper deals with content-based compression of binary-shape images. The proposed method is based on a polygonal approximation of the shape contours. A well-known approximation algorithm, from computer vision applications such as shape analysis and boundary pattern matching, is adapted to achieve a progressive representation. The resulting vario...
Article
Emerging multimedia applications have created the need for new functionalities in digital communications. Whereas existing compression standards only deal with the audio-visual scene at a frame level, it is now necessary to handle individual objects separately, thus allowing scalable transmission as well as interactive scene recomposition by the re...
Article
Thèse no 1891 sc. techn. EPF Lausanne. Literaturverz.
Conference Paper
Full-text available
Two major classes of shape coding methods are reviewed, namely bitmap coding and contour coding, and in particular their scalable extensions. In addition to their absolute compression efficiency, we analyze their performance in the framework of a complete image/video coding scheme, and show that they bring complementary functionalities depending on...
Conference Paper
Full-text available
This paper presents a new progressive contour coding method based on digital polygonal approximation. By applying digital geometry concepts such as digital contours, segments and distances at the approximation stage, it is possible to design an inherently progressive encoding scheme which directly exploits the resulting geometrical knowledge. Exper...
Conference Paper
Full-text available
The problem of errors occurring in MPEG-2 coded video sequences, caused by signal loss during transmission, is examined in this paper and an attempt is made to reconstruct the lost parts at each frame. The proposed error concealment scheme exploits reconstructed temporal information from previously decoded frames in order to conceal bitstream error...
Article
The problem of errors occurring in MPEG-2 coded video sequences, caused by signal loss during transmission, is examined in this paper and an attempt is made to reconstruct the lost parts at each frame. The proposed error concealment scheme exploits reconstructed temporal information from previously decoded frames in order to conceal bitstream error...
Article
Full-text available
This paper presents the Swiss Federal Institute of Technology (EPFL) proposal to MPEG-4 video coding standardization activity. The proposed technique is based on a novel approach to audio-visual data compression entitled dynamic coding. The newly born multimedia environment supports a plethora of applications which cannot be covered adequately by a...
Article
Full-text available
This paper introduces a novel approach to visual data compression. The approach, named dynamic coding, consists of an effective competition between several representation models used for describing data portions. The image data is represented as the union of several regions each approximated by a representation model locally appropriate. The dynami...
Conference Paper
Full-text available
In this paper, we present an overview of the dynamic coding approach, together with recent developments carried out in this framework. Dynamic coding is a general approach to the problem of visual data representation in the context of multimedia. This approach consists of a dynamic combination of multiple representation models and segmentation stra...

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Projects

Projects (2)
Archived project
Optimal encoding of video and 3D data.