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Jong Seok Lee

Cette personne n’est plus à l’EPFL

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Publications associées (35)

Motion Parallax Based Restitution of 3D Images on Legacy Consumer Mobile Devices

Touradj Ebrahimi, Jong Seok Lee, Lutz Goldmann, Martin Rerabek

While 3D display technologies are already widely available for cinema and home or corporate use, only a few portable devices currently feature 3D display capabilities. Moreover, the large majority of 3D display solutions rely on binocular perception. In th ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

Hybrid Simulated Annealing and Its Application to Optimization of Hidden Markov Models for Visual Speech Recognition

Jong Seok Lee

We propose a novel stochastic optimization algorithm, hybrid simulated annealing (SA), to train hidden Markov models (HMMs) for visual speech recognition. In our algorithm, SA is combined with a local optimization operator that substitutes a better solutio ...

2010

Subjective evaluation of scalable video coding for content distribution

Touradj Ebrahimi, Engin Kurutepe, Francesca De Simone, Jong Seok Lee

This paper investigates the influence of the combination of the scalability parameters in scalable video coding (SVC) schemes on the subjective visual quality. We aim at providing guidelines for an adaptation strategy of SVC that can select the optimal sca ...

2010

Object-based Tag Propagation for Semi-automatic Annotation of Images

Touradj Ebrahimi, Ivan Ivanov, Péter Vajda, Jong Seok Lee, Lutz Goldmann

Over the last few years, social network systems have greatly increased users’ involvement in online content creation and annotation. Since such systems usually need to deal with a large amount of multimedia data, it becomes desirable to realize an interact ...

2010

3D Object Duplicate Detection for Video Retrieval

Touradj Ebrahimi, Ivan Ivanov, Péter Vajda, Jong Seok Lee, Lutz Goldmann

Content-based video retrieval has become a very active research area in the last decade due to the increasing number of video shared on social networks such as YouTube and Daily-Motion. While most of the content-based video retrieval approaches employ visu ...

2010

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

Touradj Ebrahimi, Thierry Pun, Anton Nijholt, Ashkan Yazdani, Jong Seok Lee

2010

Propagation of geotags based on object duplicate detection

Touradj Ebrahimi, Ivan Ivanov, Péter Vajda, Jong Seok Lee, Lutz Goldmann

In this paper, we consider the use of object duplicate detection for the propagation of geotags from a small set of images with location names (IPTC) to a large set of non-tagged images. The motivation behind this idea is that images of individual location ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2010

Robust Duplicate Detection of 2D and 3D Objects

Touradj Ebrahimi, Ivan Ivanov, Péter Vajda, Jong Seok Lee, Lutz Goldmann

In this paper, we analyze our graph-based approach for 2D and 3D object duplicate detection in still images. A graph model is used to represent the 3D spatial information of the object based on the features extracted from training images so that an explici ...

2010

Temporal Synchronization in Stereoscopic Video: Influence on Quality of Experience and Automatic Asynchrony Detection

Touradj Ebrahimi, Jong Seok Lee, Lutz Goldmann

In this paper, we analyze the inﬂuence of temporal asyn- chrony on the subjective quality of stereoscopic video. Based on our recently created 3D video database, different levels of asynchrony were simulated and a comprehensive subjective test was conducte ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

Epitome - A Social Game for Photo Album Summarization

Touradj Ebrahimi, Ivan Ivanov, Péter Vajda, Jong Seok Lee

In this paper, we propose an approach for photo album summarization through a novel social game "Epitome" for mobile phones. Our approach to album summarization consists of two games: "Select the Best!" and "Split it!". The goal of the first game is to all ...

2010

Video coding based on audio-visual attention

Touradj Ebrahimi, Francesca De Simone, Jong Seok Lee

This paper proposes an efficient video coding method based on audio-visual attention, which is motivated by the fact that cross-modal interaction significantly affects humans’ perception of multimedia experiences. First, we propose an audio-visual source l ...

2009

Influence of audio-visual attention on perceived quality of standard definition multimedia content

Touradj Ebrahimi, Francesca De Simone, Jong Seok Lee

When human subjects assess the quality of multimedia data, high level perceptual processes such as Focus of Attention (FoA) and eye movements are believed to play an important role in such tasks. While prior art reports incorporation of visual FoA into obj ...

2009

Efficient video coding in H.264/AVC by using audio-visual information

Touradj Ebrahimi, Jong Seok Lee

This paper proposes an efficient video coding method which utilizes audio-visual information, based on the observation that sound-emitting regions in a video sequence attract observer’s attention. The regions responsible for the sound are identified by an ...

2009

Implicit emotional tagging of multimedia using EEG signals and brain computer interface

Touradj Ebrahimi, Ashkan Yazdani, Jong Seok Lee

In multimedia content sharing social networks, tags assigned to content play an important role in search and retrieval. In other words, by annotating multimedia content, users can associate a word or a phrase (tag) with that resource such that it can be se ...

ACM2009

Two-level bimodal association for audio-visual speech recognition

Touradj Ebrahimi, Jong Seok Lee

This paper proposes a new method for bimodal information fusion in audio-visual speech recognition, where cross-modal association is considered in two levels. First, the acoustic and the visual data streams are combined at the feature level by using the ca ...

Springer-Verlag2009

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