Henning M "uller, Wolfgang M "uller, David Mcg Squire, Thierry Pun
Strategies for positive and negative relevance feedback inimage retrieval
Do You Feel What I Hear? (2008)
Patrick Roth, Hesham Kamel, Lori Petrucci, Thierry Pun
In this research we implemented three different methods for presenting scientific graphs to blind and visually impaired people. Each rendering method employed either audition, kinesthetic or a...
Henning Müller, Thierry Pun, David Squire
This article describes an approach to learn feature weights for content-based image retrieval (CBIR) from user interaction log files. These usage log files are analyzed for images marked together by...
Christian Rauber, Peter Tschudin, Serguei Startchik, Thierry Pun, Christian Rauber, Peter Tschudin, ...
This project concerns the management of a multimedia database (text and image) of historical papers representing ancient watermarks. The current database contains roughly 3’000 images of such...
Secure Robust Digital Watermarking Using the Lapped Orthogonal Transform (2008)
Digital watermarks have been proposed as a method for discouraging illicit copying and distribution of copyright material. One approach to Transform Domain image watermarking is to divide the image...
The Gaussian Transform of distributions: (2008)
Teodor Iulian Alecu, Sviatoslav Voloshynovskiy, Thierry Pun
“ © IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale...
r security engineering ag (2008)
Alexander Herrigel, Joseph O Ruanaidh, Holger Petersen, Shelby Pereira, Thierry Pun
Abstract. This paper 2 presents a new approach for the secure and robust copyright protection of digital images. A system for generating digital watermarks and for trading watermarked images is...
Sviatoslav Voloshynovskiy, Oleksiy Koval, Emre Topak, Thierry Pun
channel state estimation for state
Hunting moving targets � an extension to Bayesian methods in multimedia databases (2008)
David Mcg, Squire Henning M�uller, Thierry Pun
It has been widely recognised that the di�erence between the level of abstraction of the formulation of a query �by example � and that of the desired result �usually an image with certain...
Laplacian channel state estimation for (2008)
Oleksiy Koval, Svyatoslav Voloshynovskiy, Thierry Pun
state dependent channels
The Edge Process Model and Its Application to Information-Hiding Capacity Analysis (2008)
Sviatoslav Voloshynovskiy, Oleksiy Koval, M. Kivanc Mihcak, Thierry Pun
Abstract—In this paper, the problem of capacity analysis of datahiding techniques in a game information-theoretic framework is considered. Capacity is determined by the stochastic model of the host...
DENOISING WITH INFINITE MIXTURE OF GAUSSIANS (2008)
Teodor Iulian Alecu, Sviatoslav Voloshynovskiy, Thierry Pun
We show in this paper how an Infinite Mixture of Gaussians model can be used to estimate/denoise non-Gaussian data with local linear estimators based on the Wiener filter. The decomposition of the...
exponent analysis of person identification based on fusion of dependent/independent modalities
The use of electromagnetic analogies for perceptual grouping of image primitives is presented. This approach assumes that grouping is a low-level, data-driven and global process, with all image...
A CONTEXTUAL MODEL FOR SEMANTIC VIDEO STRUCTURING (2008)
Bruno Janvier, Eric Bruno, Stephane March, Thierry Pun
The problem of semantic video structuring is vital for automated management of large video collections. The goal is to automatically extract from the raw data the inner structure of a video...
Frédéric Deguillaume, Sviatoslav Voloshynovskiy, Thierry Pun
method for the estimation and recovering from general affine
ACHIEVABLE RATE ANALYSIS OF GEOMETRICALLY ROBUST DATA-HIDING CODES IN ASYMPTOTIC SET-UPS (2008)
Emre Topak, Sviatoslav Voloshynovskiy, Oleksiy Koval, Thierry Pun
Geometrical transformations bring synchronization problems into the robust digital data-hiding. Previous works on this subject were concentrated on the robustness to particular geometrical...
Patrick Roth, Lori Petrucci, Thierry Pun
"From Dots To Shapes": an auditory haptic game platform
Localization properties of an EEG sensor system: lower bounds and optimality (2008)
Teodor Iulian Alecu, Sviatoslav Voloshynovskiy, Thierry Pun
Most studies concerning the EEG inverse problem focus on the properties of one or another specific inverse solution. Few studies approach the problem of the bounds imposed by the system itself,...
A CONTEXTUAL MODEL FOR SEMANTIC VIDEO STRUCTURING (2008)
Bruno Janvier, Eric Bruno, Stephane March, Thierry Pun
The problem of semantic video structuring is vital for automated management of large video collections. The goal is to automatically extract from the raw data the inner structure of a video...
Image and Video Processing for Visually Handicapped People (2008)
Thierry Pun, Patrick Roth, Guido Bologna, Konstantinos Moustakas, Dimitrios Tzovaras
This paper reviews the state of the art in the field of assistive devices for sight-handicapped people. It concentrates in particular on systems that use image and video processing for converting...
Guiding the focus of attention of blind people with visual saliency (2008)
Deville, Benoit, Bologna, Guido, Vinckenbosch, Michel, Pun, Thierry
The context of this work is the development of a mobility aid for visually impaired persons. We present here an original approach for a real time alerting system, based on the detection of visual...
Guiding the focus of attention of blind people with visual saliency (2008)
Deville, Benoit, Bologna, Guido, Vinckenbosch, Michel, Pun, Thierry
The context of this work is the development of a mobility aid for visually impaired persons. We present here an original approach for a real time alerting system, based on the detection of visual...
Lawrence Chachere, Thierry Pun
) Lawrence Chachere and Thierry Pun Computer Science Center, University of Geneva, 24 rue General Dufour, CH-1211 Geneva 4, Switzerland e-mail: chachere@cui.unige.ch Introduction As computer vision...
Potato Operation: automatic detection of potato diseases (2007)
Marc Lefebvre, Thierry Zimmerman, Charles Baur, Paul Gugerli, Thierry Pun
The Potato Operation is a collaborative, multidisciplinary project in the domain of destructive testing of agricultural products. It aims at automatizing pulp sampling of potatoes in order to detect...
A Relaxation Network for a Feature-Driven Visual Attention System (2007)
Ruggero Milanese, Jean-marc Bost, Thierry Pun
In this paper an attention module is described, which can be used by an active vision system to generate gaze changes. This module is based on a bottom-up, feature-driven analysis of the image. The...
Multisource and Color Lighting for Detection of Small Protuberance (2007)
In typical machine vision problems such as quality control or object location, it is often the case that elements of interest are small protuberances over a surface. We present an innovative and...
Transforming an Image Into Dataflows of. . . (2007)
This article presents basic principles as well as initial results obtained with our relevance based object recognition system. The fundamental idea is to transform a static image into three dataflows...
LaboImage: a Workstation Environment for Research in Image Processing and Analysis (2007)
Alain Jacot-descombes, Krassimir Todorov, Denis F. Hochstrasser, Christian Pellegrini, Thierry Pun
Numerous images are produced daily in biomedical research. In order to extract relevant and useful results, various processing and analysis steps are mandatory. The present paper describes a new,...
Pierre-yves Burgi, Thierry Pun
This article deals with the problem of segmenting static images which is known to be difficult in the case of very noisy patterns. The proposed approach rests on the transformation of a static image...
Sviatoslav Voloshynovskiy, Oleksiy Koval, Thierry Pun
image denoising using non-stationary stochastic
protocol Brain-Computer Interfaces (2007)
Julien Kronegg, Teodor Alecu, Thierry Pun
Information theoretic bit-rate optimization for average trial
Lori Stefano Petrucci, Eric Harth, Patrick Roth, André Assimacopoulos, Thierry Pun
browser for blind and visually impaired users
The use of electromagnetic analogies for perceptual grouping of image primitives is presented. This approach assumes that grouping is a low-level, data-driven and global process, with all image...
Patrick Roth, Lori Petrucci, Thierry Pun
This paper describes "From Dots to Shapes " (FDTS), an auditory platform composed by three classic games ("Simon", "Point Connecting " and...
Metadata representation for semantic-based multimedia security and management (2007)
Yuriy Rytsar, Sviatoslav Voloshynovskiy, Thierry Pun
Abstract. In this paper a novel approach to metadata representation for semantic-based multimedia security and management is proposed. This approach is based on semantically meaningful object...
Visual object categorization using distance-based discriminant analysis (2007)
Serhiy Kosinov, Stéphane March, Thierry Pun
This paper formulates the problem of object categorization in the discriminant analysis framework focusing on transforming visual feature data so as to make it conform to the compactness hypothesis...
Guido Bologna, Benoît Deville, Thierry Pun, Michel Vinckenbosch
The goal of the See ColOr project is to achieve a noninvasive mobility aid for blind users that will use the auditory pathway to represent in real-time frontal image scenes. We present and discuss...
Guido Bologna, Benoît Deville, Thierry Pun, Michel Vinckenbosch
The goal of the See ColOr project is to achieve a noninvasive mobility aid for blind users that will use the auditory pathway to represent in real-time frontal image scenes. We present and discuss...
Image and Video Processing for Visually Handicapped People (2007)
Thierry Pun, Patrick Roth, Guido Bologna, Konstantinos Moustakas, Dimitrios Tzovaras
This paper reviews the state of the art in the field of assistive devices for sight-handicapped people. It concentrates in particular on systems that use image and video processing for converting...
Information-Theoretic Analysis of Electronic and Printed Document Authentication (2006)
Sviatoslav Voloshynovskiy, Oleksiy Koval, Renato Villan, Emre Topak, José Emilio, Vila Forcén, ...
In this paper we consider the problem of document authentication in electronic and printed forms. We formulate this problem from the information-theoretic perspectives and present the joint...
Emotion assessment: arousal evaluation using EEG’s and peripheral physiological signals (2006)
Guillaume Chanel, Julien Kronegg, Didier Gr, Thierry Pun, Guillaume Chanel, Julien Kronegg, ...
The arousal dimension of human emotions is assessed from two different physiological sources: peripheral signals and electroencephalographic (EEG) signals from the brain. A complete acquisition...
On Reversibility of Random Binning Techniques: Multimedia Perspectives (2005)
Sviatoslav Voloshynovskiy Oleksiy, Oleksiy Koval, Emre Topak, Pedro Comesaña Alfaro, Thierry Pun
In this paper, we analyze a possibility of reversibility of datahiding techniques based on random binning from multimedia perspectives.
On Security Of Geometrically-Robust Data-Hiding (2005)
Emre Topak Sviatoslav, Sviatoslav Voloshynovskiy, Oleksiy Koval, José Emilio, Vila Forcén, Thierry Pun
In this paper we analyze security of robust data-hiding in channels with geometrical transformations. We categorize possible decoding strategies for channels with geometrical transformations within...
On Reversibility of Random Binning Techniques: Multimedia Perspectives (2005)
Sviatoslav Voloshynovskiy, Oleksiy Koval, Emre Topak, Pedro Comesana Alfaro, Thierry Pun
In this paper, we analyze a possibility of reversibility of datahiding techniques based on random binning from multimedia perspectives.
Renato Villán, Sviatoslav Voloshynovskiy, Oleksiy Koval, Thierry Pun
In this paper, we deal with the design of high-rate multilevel two-dimensional (2D) bar codes for the print-and-scan channel. Firstly, we introduce a framework for evaluating the performance limits...
Analysis of bit-rate definitions for Brain-Computer Interfaces," presented at Int (2005)
Julien Kronegg, Svyatoslav Voloshynovskiy, Thierry Pun
Abstract- A comparison of different bit-rate definitions used in the Brain-Computer Interface (BCI) community is proposed; assumptions underlying those definitions and their limitations are...
Teodor Iulian Alecu, Sviatoslav Voloshynovskiy, Thierry Pun
This paper introduces the general purpose Gaussian Transform, which aims at representing a generic symmetric distribution as an infinite mixture of Gaussian distributions. We start by the...
Renato Villán, Sviatoslav Voloshynovskiy, Oleksiy Koval, Thierry Pun
In this paper, we deal with the design of high-rate multilevel two-dimensional (2D) bar codes for the print-and-scan channel. Firstly, we introduce a framework for evaluating the performance limits...
Renato Villán, Sviatoslav Voloshynovskiy, Oleksiy Koval, Thierry Pun
In this paper, we deal with the design of high-rate multilevel two-dimensional (2D) bar codes for the print-andscan channel. Firstly, we derive an upper bound on the maximum achievable rate of these...
Renato Villán, Sviatoslav Voloshynovskiy, Oleksiy Koval, Thierry Pun
In this paper, we deal with the design of high-rate multilevel two-dimensional (2D) bar codes for the print-andscan channel. Firstly, we derive an upper bound on the maximum achievable rate of these...
Information-transfer rate modeling of EEG-based synchronized brain-computer interfaces (2005)
Julien Kronegg, Sviatoslav Voloshynovskiy, Thierry Pun
The information-transfer rate (ITR) is commonly used to assess the performance of brain-computer interfaces (BCI). Various studies have shown that the optimal number of mental tasks to be used is...
Eeg Cortical Imaging: A Vector Field Approach For Laplacian (2004)
Denoising And Missing, Teodor Iulian Alecu, Sviatoslav Voloshynovskiy, Thierry Pun
The surface Laplacian is known to be a theoretical reliable approximation of the cortical activity. Unfortunately, because of its high pass character and the relative low density of the EEG caps, the...
Regularized Two-Step Brain Activity Reconstruction From (2004)
Spatiotemporal Eeg Data, Teodor Iulian Alecu, Sviatoslav Voloshynovskiy, Thierry Pun
We are aiming at using EEG source localization in the framework of a Brain Computer Interface project. We propose here a new reconstruction procedure, targeting source (or equivalently mental task)...
Julien Kronegg, Svyatoslav Voloshynovskiy, Thierry Pun
The upper capacity bound of a brain-computer interface (BCI) is determined using a model based on Shannon channel theory. This capacity is compared with all bit-rate definitions used in the BCI...
Bruno Janvier, Eric Bruno, Stephane Marchand-Maillet, Stéphane March, Thierry Pun
The first step in the analysis of video content is the partitioning of a long video sequence into short homogeneous temporal segments. The homogeneity property ensures that the segments are taken by...
Information Theoretic Bit-Rate Optimization for Average Trial (2003)
Julien Kronegg, Teodor Alecu, Thierry Pun
A brain-computer interface (BCI) allows a user to communicate with a computer by means only of the electrical information provided by the brain (EEG), without activation of the motor system. We...
Julien Kronegg Teodor, Teodor Alecu, Thierry Pun
A brain-computer interface (BCI) allows a user to communicate with a computer by means only of the electrical information provided by the brain (EEG), without activation of the motor system. We...
Sviatoslav Voloshynovskiy, Frederic Deguillaume, Oleksiy Koval, Thierry Pun
In this paper we introduce and develop a framework for the data-hiding technologies that aim at resolving emerging problems of modern public networks. First, we emphasize the main open issues in...
Sviatoslav Voloshynovskiy, Frédéric Deguillaume, Oleksiy Koval, Thierry Pun
headings Abstract — In this paper we introduce and develop a framework for the data-hiding technologies that aim at resolving emerging problems of modern public networks. First, we emphasize the...
Secure hybrid robust watermarking resistant against tampering and copy attack (2002)
Frederic Deguillaume, Sviatoslav Voloshynovskiy, Thierry Pun
Three major aspects in the protection of digital documents have been pointed out, each of them with di erent requirements: rst copyright protection, protecting ownership and usage rights � secondly...
The truth about Corel – evaluation in image retrieval (2002)
Henning Müller, Stephane March, Thierry Pun
Abstract. To demonstrate the performance of content-based image retrieval systems (CBIRSs), there is not yet any standard data set that is widely used. The only dataset used by a large number of...
Multibit Digital Watermarking Robust against Local Nonlinear Geometrical Distortions (2001)
Sviatoslav Voloshynovskiy, Frédéric Deguillaume, Thierry Pun
This paper presents an efficient method for the estimation and recovering from nonlinear or local geometrical distortions, such as the random bending attack and restricted projective transforms. The...
An AudioHaptic Tool for Non-Visual Image Representation (2001)
Patrick Roth, David Richoz, Lori Petrucci, Thierry Pun
This paper reports on the design of an audio-haptic tool that enables blind computer users to explore a picture by the hearing and feeling modalities. The tool is divided in two entities: a...
Countermeasures for unintentional and intentional video watermarking attacks (2000)
These last years, the rapidly growing digital multimedia market has revealed an urgent need for effective copyright protection mechanisms. Therefore, digital audio, image and video watermarking has...
Content adaptive watermarking based on a stochastic multiresolution image modeling (2000)
Sviatoslav Voloshynovskiy, Frederic Deguillaume, Thierry Pun
In this paper, a wavelet domain robust watermarking technique for still images is presented. The proposed watermarking algorithm is based on 3 key aspects. First, message encoding is accomplished...
Content adaptive watermarking based on a stochastic multiresolution image modeling (2000)
Sviatoslav Voloshynovskiy, Thierry Pun
In this paper, a wavelet domain robust watermarking technique for still images is presented. The proposed watermarking algorithm is based on 3 key aspects. First, message encoding is accomplished...
MRML: A Communication Protocol for Content-Based Image Retrieval (2000)
Wolfgang Müller, Henning Müller, Stéphane Marchand-Maillet, Thierry Pun, David McG. Squire, Zoran Pecenovic, ...
. In this paper we introduce and describe the Multimedia Retrieval Markup Language (MRML). This XML-based markup language is the basis for an open communication protocol for content-based image...
Strategies for Positive and Negative Relevance Feedback in Image Retrieval (2000)
Henning Müller, Wolfgang Müller, Stephane Marchand-Maillet, Stephane March, Thierry Pun, David McG. Squire
Relevance feedback has been shown to be a very effective tool for enhancing retrieval results in text retrieval. In content-based image retrieval it is more and more frequently used and very good...
An Open Framework for Distributed Multimedia Retrieval (2000)
Henning Müller, Wolfgang Müller, David McG. Squire, Zoran Pecenovic, Stéphane Marchand-Maillet, Thierry Pun
This article describes a framework for distributed multimedia retrieval which permits the connection of compliant user interfaces with a variety of multimedia retrieval engines via an open...
Long-Term Learning from User Behavior in Content-Based Image Retrieval (2000)
Henning Müller, Wolfgang Müller, David McG. Squire, Stéphane Marchand-Maillet, Thierry Pun
This article describes an algorithm for obtaining knowledge about the importance of features from analyzing user log les of a content-based image retrieval system (CBIRS). The user log les from the...
Patrick Roth, Lori Stefano Petrucci, André Assimacopoulos, Thierry Pun
In the Internet world, the widespread use of graphical user interfaces (GUIs) increasingly bars visually handicapped people from accessing digital information. In this context our project aims at...
Shelby Pereira And, Shelby Pereira, Thierry Pun
INTRODUCTION The popularity of the World Wide Web has clearly demonstrated the commercial potential of the digital multimedia market. Unfortunately however, digital networks and multimedia also...
Strategies for Positive and Negative Relevance Feedback in Image Retrieval (2000)
Henning Müller, Wolfgang Müller, Stéphane Marchand-Maillet, Stephane March, Thierry Pun, David Mcg Squire
Relevance feedback has been shown to be a very effective tool for enhancing retrieval results in text retrieval. In content-based image retrieval it is more and more frequently used and very good...
Performance Evaluation in Content-Based Image Retrieval: Overview and Proposals (2000)
Henning Müller, Wolfgang Müller, David McG. Squire, Stéphane Marchand-Maillet, Thierry Pun
Evaluation of retrieval performance is a crucial problem in content-based image retrieval (CBIR). Many dierent methods for measuring the performance of a system have been created and used by...
MRML: A Communication Protocol for Content-Based Image Retrieval (2000)
Wolfgang Müller, Henning Müller, Stéphane Marchand-Maillet, Thierry Pun, David McG. Squire, Zoran Pecenovic, ...
. In this paper we introduce and describe the Multimedia Retrieval Markup Language (MRML). This XML-based markup language is the basis for an open communication protocol for content-based image...
Strategies for Positive and Negative Relevance Feedback in Image Retrieval (2000)
Henning Müller, Wolfgang Müller, Stéphane Marchand-Maillet, Thierry Pun, David McG. Squire
Relevance feedback has been shown to be a very effective tool for enhancing retrieval results in text retrieval. In content-based image retrieval it is more and more frequently used and very good...
Lori Stefano Petrucci, Eric Harth, Patrick Roth, André Assimacopoulos, Thierry Pun
The inherent visual nature of Internet browsers makes the Web inaccessible to the visually impaired. Although several nonvisual browsers have been developed, they usually transform the visual content...
Lori Stefano Petrucci, Eric Harth, Patrick Roth, Assimacopoulos André, Thierry Pun
The World Wide Web (WWW) has recently become the main source of digital information accessible everywhere and by everyone. Nevertheless, the inherent visual nature of Internet browsers makes the Web...
An Open Framework for Distributed Multimedia Retrieval (2000)
Henning Müller, Wolfgang Müller, Zoran Pecenovic, Stéphane Marchand-Maillet, Thierry Pun, ...
This article describes a framework for distributed multimedia retrieval which permits the connection of compliant user interfaces with a variety of multimedia retrieval engines via an open...
MRML: A Communication Protocol for Content-Based Image Retrieval (2000)
Wolfgang Müller, Henning Müller, Stéphane Marchand-Maillet, Thierry Pun, Wolfgang M Uller, Henning M Uller, ...
In this paper we introduce and describe the Multimedia Retrieval Markup Language (MRML). This XML-based markup language is the basis for an open communication protocol for content-based image...
Strategies for positive and negative relevance feedback in image retrieval (2000)
Henning Müller, Wolfgang Müller, Stéphane March, Thierry Pun, David Mcg Squire
Relevance feedback has been shown to be a very effective tool for enhancing retrieval results in text retrieval. In content-based image retrieval it is more and more frequently used and very good...
Henning Müller, Wolfgang Müller, David Mcg Squire, Stéphane March, Thierry Pun
Strategies for positive and negative relevance feedback in image retrieval
Effective channel coding for DCT watermarks (2000)
Shelby Pereira, Sviatoslav Voloshynovskiy, Thierry Pun
We describe effective channel coding strategies which can be used in conjunction with linear programming optimization techniques for the embedding of robust perceptually adaptive DCT domain...
Strategies for positive and negative relevance feedback in image retrieval (2000)
Henning Müller, Wolfgang Müller, Stéphane March, Thierry Pun, David Mcg Squire
Relevance feedback has been shown to be a very effective tool for enhancing retrieval results in text retrieval. In content-based image retrieval it is more and more frequently used and very good...
Auditory browser for blind and visually impaired users (1999)
Patrick Roth, Lori Petrucci, Thierry Pun, Andr Assimacopoulos
This paper presents our work on the development of a multimodal auditory interface which permits blind users to work more easily and efficiently with GUI browsers. A macro-analysis phase, which can...
Hunting moving targets: an extension to Bayesian methods in multimedia databases (1999)
Wolfgang Müller, David McG. Squire, Henning Müller, Thierry Pun
It has been widely recognised that the difference between the level of abstraction of the formulation of a query (by example) and that of the desired result (usually an image with certain semantics)...
Efficient Access Methods for Content-Based Image Retrieval With Inverted Files (1999)
Henning Müller, David McG. Squire, Wolfgang Müller, Thierry Pun
As human factor studies over the last thirty years have shown, response time is a very important factor for the usability of an interactive system, especially on the world wide web. In particular,...
Efficient Access Methods for Content-Based Image Retrieval With Inverted Files (1999)
David McG. Squire, Wolfgang Müller, Thierry Pun, Henning Müller, David Mcg, ...
As human factor studies over the last thirty years have shown, response time is a very important factor for the usability of an interactive system, especially on the world wide web. In particular,...
Hunting moving targets: an extension to Bayesian methods in multimedia databases (1999)
David McG. Squire, Henning Müller, Thierry Pun, Wolfgang Müller, David Mcg, ...
It has been widely recognised that the difference between the level of abstraction of the formulation of a query (by example) and that of the desired result (usually an image with certain semantics)...
Fast Robust Template Matching for Affine Resistant Image Watermarks (1999)
. Digital watermarks have been proposed as a method for discouraging illicit copying and distribution of copyrighted material. This paper describes a method for the secure and robust copyright...
MRML: Towards an extensible standard for multimedia querying and benchmarking (1999)
Zoran Pecenovic, Wolfgang Müller, David McG. Squire, Henning Muller, Thierry Pun
In recent years, the need for databases which query multimedia data by content has become apparent. Many commercial and non--commercial research groups are trying to fulfill these needs. The systems...
Cryptographic Copyright Protection for Digital Images based on Watermarking Techniques (1999)
Joseph O Ruanaidh, Holger Petersen, Alexander Herrigel, Shelby Pereira, Thierry Pun
In this paper 1 we present a new approach for the secure and robust copyright protection of digital images. We describe a system for generating digital watermarks and for trading watermarked images....
Performance Evaluation in Content-Based Image Retrieval: Overview and Proposals (1999)
Henning Müller, Wolfgang Müller, Thierry Pun, David McG. Squire
Evaluation of retrieval performance is a crucial problem in content-based image retrieval (CBIR). Many different methods for measuring the performance of a system have been created and used by...
Template based recovery of Fourier�based watermarks using Log�polar and Log�log maps (1999)
Digital watermarks have been proposed as a method for discouraging illicit copying and distribution of copyrighted material. This paper describes a method for the secure and robust copyright...
Auditory browser for blind and visually impaired users (1999)
Patrick Roth, Lori Petrucci, Thierry Pun
This paper presents our work on the development of a multimodal auditory interface which permits blind users to work more easily and efficiently with GUI browsers. A macro-analysis phase, which can...
Robust 3D DFT video watermarking (1999)
This paper proposes a new approach for digital watermarking and secure copyright protection of videos � the principal aim being to discourage illicit copying and distribution of copyrighted...
Ecient access methods for content-based image retrieval with inverted (1999)
Henning Müller, David McG. Squire, Wolfgang Müller, Thierry Pun
As human factor studies over the last thirty years have shown, response time is a very important factor for the usability of an interactive system, especially on the world wide web. In particular,...
Performance Evaluation in Content-Based Image Retrieval: Overview and Proposals (1999)
Henning Muller, Wolfgang Muller, David Mcg Squire, Thierry Pun
Evaluation of retrieval performance is a crucial problem in content-based image retrieval (CBIR). Many di erent methods for measuring the performance of a system have been created and used by...
Assessing agreement between human and machine clusterings of image databases (1998)
There is currently much interest in the organization and content-based querying image databases. The usual hypothesis is that image similarity can be characterized by low-level features, without...
Assessing agreement between human and machine clusterings of image databases (1998)
There is currently much interest in the organization and content�based querying image databases. The usual hypothesis is that image similarity can be characterized by low�level features �...
Rotation, scale and translation invariant digital image watermarking (1997)
Joseph J. K, O Ruanaidh, Thierry Pun
A digital watermark is an invisible mark embedded in a digital image which may be used for Copyright Protection. This paper proposes that Fourier�Mellin transform�based invariants can be used for...
Rotation, scale and translation invariant digital image watermarking (1997)
Joseph J. K, O Ruanaidh, Thierry Pun
ae ae
Assessing Agreement Between Human and Machine Clusterings of Image Databases (1997)
David McG. Squire, Thierry Pun, David Mcg, Squire Thierry Pun
There is currently much interest in the organization and content-based querying image databases. The usual hypothesis is that image similarity can be characterized by low-level features, without...
David McG. Squire, Thierry Pun
There has recently been much interest in the organization and content-based querying of large images databases. Most frequently, the underlying hypothesis is that image similarity can be...
Using Human Partitionings of an Image Set to Learn a Similarity-Based Distance Measure (1997)
David McG. Squire, Thierry Pun, David Mcg, Squire Thierry Pun
In this paper our goal is to employ human judgments of image similarity to improve the organization of an image database for content-based retrieval. We first derive a statistic, B for measuring the...
Retrieval of Images from a Library of Watermarks for Ancient Paper Identification (1997)
Christian Rauber, Peter Tschudin, Thierry Pun
Introduction The importance of electronic publishing, storage and distribution of documents is increasing and will have profound implications for our economy, culture and society. The multimedia...
Rotation, scale and translation invariant digital image watermarking (1997)
Joseph J. K, O Ruanaidh, Thierry Pun
A digital watermark is an invisible mark embedded in a digital image which may be used for Copyright Protection. This paper de� scribes how Fourier�Mellin transform�based invariants can be used...
Combining multiple motion estimates for vehicle tracking (1996)
Sylvia Gil, Ruggero Milanese, Thierry Pun
Abstract. In this paper, the problem of combining estimates provided by multiple models is considered, with application to vehicle tracking. Two tracking systems, based on the bounding-box and on the...
Statistical Structuring of Pictorial Databases for Content-Based Image Retrieval Systems (1996)
This letter presents a two-stage statistical approach for "exploring and explaining" a pictorial database, for content-based image retrieval systems. First, we describe how correspondence...
Combining Multiple Motion Estimates for Vehicle Tracking (1996)
Sylvia Gil, Ruggero Milanese, Thierry Pun
. In this paper, the problem of combining estimates provided by multiple models is considered, with application to vehicle tracking. Two tracking systems, based on the bounding-box and on the 2-D...
Correspondence analysis and hierarchical indexing for content-based image retrieval (1996)
Ruggero Milanese, David Squire, Thierry Pun
This paper describes a two-stage statistical approach supporting content-based search in image databases. The first stage performs correspondence analysis, a factor analysis method transforming image...
Correspondence analysis and hierarchical indexing for content-based image retrieval (1996)
Ruggero Milanese, David Squire, Thierry Pun
This paper describes a two-stage statistical approach supporting content-based search in image databases. The first stage performs correspondence analysis, a factor analysis method transforming image...
Serguei Startchik, Christian Rauber, Thierry Pun
This paper addresses the robust recognition of planar polygonal objects situated in 3D space over highly textured backgrounds, where each object is modeled by a set of "five-lines "...
Computer Vision and Multimedia Information Systems (1995)
Thierry Pun, S. J. Gibbs, D. Tsichritzis, Multimedia Programming
Computer vision offers a number of techniques that can be used in the context of pictorial information systems. To motivate this point of view, we first present the basic issues involved in computer...
Thierry Pun, Ruggero Milanese Harry, Ruggero Milanese, Harry Wechsler, Harry Wechsler, ...
Active and selective perception seeks regions of interest in an image in order to reduce the computational complexity associated with time--consuming processes such as object recognition. We describe...
Feature Selection for Object Tracking in Traffic Scenes (1994)
Sylvia Gil, Ruggero Milanese, Thierry Pun
This paper describes a motion-analysis system, applied to the problem of vehicle tracking in real-world highway scenes. The system is structured in two stages. In the first one, a motion-detection...
Integration of Bottom-Up and Top-Down Cues for Visual Attention Using Non-Linear Relaxation (1994)
Ruggero Milanese, Harry Wechsler, Sylvia Gil, Jean-Marc Bost, Thierry Pun
Active and selective perception seeks regions of interest in an image in order to reduce the computational complexity associated with time--consuming processes such as object recognition. We describe...
Feature Selection for Object Tracking in Traffic Scenes (1994)
Thierry Pun, Sylvia Gil, Sylvia Gil, Ruggero Milanese, Ruggero Milanese
This paper describes a motion-analysis system, applied to the problem of vehicle tracking in real-world highway scenes. The system is structured in two stages. In the first one, a motion-detection...
Multirésolution alerting for motion détection (1993)
Cet article présente un système d'alerte qui a pour but de détecter les objets en mouvement dans une séquence d'images. Une estimation préliminaire des objects en mouvement est d'abord obtenue...
Multiresolution alerting for motion detection (1993)
In this paper, an alerting system is proposed aiming at significantly reducing the amount of data where motion computation operators have to be
Non-Linear Multiresolution Relaxation for Alerting (1993)
this paper an alerting system is presented which aims at detecting moving objects in an image sequence. A preliminary estimate of moving objects is first obtained by temporal processing of the...
Non-Linear Multiresolution Relaxation for Alerting (1993)
this paper an alerting system is presented which aims at detecting moving objects of an image sequence. A preliminary estimate of moving objects is first obtained by temporal processing of the...
Image Analysis and Computer Vision in Medicine (1993)
Thierry Pun, Guido Gerig, Osman Ratib
techniques in the medical imaging environment. 1 Pun, Gerig and Ratib Computer vision in medicine February 8, 1993 Multimedia lives with images; medical images are born from digital imaging. A...
A probabilistic approach to 3-D inference of geons from a 2-D view (1992)
Alain Jacot-descombes, Thierry Pun
A new, probabilistic approach for inferring 3-D volumetric primitives from a single 2-D view is presented. This recognition relies on the assumption that every object can be decomposed into component...
The Potato Operation: computer vision for agricultural robotics (1991)
Thierry Pun, Marc Lefebvre, Sylvia Gil, Denis Brunet, Jean-daniel Dessimoz, Paul Gugerli
Each year at harvest time millions of seed potatoes are checked for the presence of viruses, by means of an Elisa test. The Potato Operation aims at automatizing the potato manipulation and pulp...