Articles

Audio Watermarking Based on HAS and Neural Networks in DCT Domain

We propose a new intelligent audio watermarking method based on the characteristics of the HAS and the techniques of neural networks in the DCT domain. The method makes the watermark imperceptible by using the...

Authors: Hung-Hsu Tsai, Ji-Shiung Cheng and Pao-Ta Yu

An Effective Technique for Enhancing an Intrauterine Catheter Fetal Electrocardiogram

Physician can obtain fetal heart rate, electrophysiological information, and uterine contraction activity for determining fetal status from an intrauterine catheters electrocardiogram with the maternal electro...

Authors: Steven L. Horner and William M. Holls III

GA-Based Image Restoration by Isophote Constraint Optimization

We propose an efficient technique for image restoration based on a genetic algorithm (GA) with an isophote constraint. In our technique, the image restoration problem is modeled as an optimization problem whic...

Authors: Jong Bae Kim and Hang Joon Kim

Robust Clustering of Acoustic Emission Signals Using Neural Networks and Signal Subspace Projections

Acoustic emission-based techniques are being used for the nondestructive inspection of mechanical systems. For reliable automatic fault monitoring related to the generation and propagation of cracks, it is imp...

Authors: Vahid Emamian, Mostafa Kaveh, Ahmed H. Tewfik, Zhiqiang Shi, Laurence J. Jacobs and Jacek Jarzynski

Semantic Indexing of Multimedia Content Using Visual, Audio, and Text Cues

We present a learning-based approach to the semantic indexing of multimedia content using cues derived from audio, visual, and text features. We approach the problem by developing a set of statistical models f...

Authors: W. H. Adams, Giridharan Iyengar, Ching-Yung Lin, Milind Ramesh Naphade, Chalapathy Neti, Harriet J. Nock and John R. Smith

A Probabilistic Multimedia Retrieval Model and Its Evaluation

We present a probabilistic model for the retrieval of multimodal documents. The model is based on Bayesian decision theory and combines models for text-based search with models for visual search. The textual m...

Authors: Thijs Westerveld, Arjen P. de Vries, Alex van Ballegooij, Franciska de Jong and Djoerd Hiemstra

Robust Techniques for Organizing and Retrieving Spoken Documents

Information retrieval tasks such as document retrieval and topic detection and tracking (TDT) show little degradation when applied to speech recognizer output. We claim that the robustness of the process is be...

Authors: James Allan

A Statistical Approach to Automatic Speech Summarization

This paper proposes a statistical approach to automatic speech summarization. In our method, a set of words maximizing a summarization score indicating the appropriateness of summarization is extracted from au...

Authors: Chiori Hori, Sadaoki Furui, Rob Malkin, Hua Yu and Alex Waibel

Probabilistic Aspects in Spoken Document Retrieval

Accessing information in multimedia databases encompasses a wide range of applications in which spoken document retrieval (SDR) plays an important role. In SDR, a set of automatically transcribed speech docume...

Authors: Wolfgang Macherey, Hans Jörg Viechtbauer and Hermann Ney

Editorial

Authors: Jing Huang, Mukund Padmanabhan and Savitha Srinivasan

Discriminative Feature Selection via Multiclass Variable Memory Markov Model

We propose a novel feature selection method based on a variable memory Markov (VMM) model. The VMM was originally proposed as a generative model trying to preserve the original source statistics from training ...

Authors: Noam Slonim, Gill Bejerano, Shai Fine and Naftali Tishby

Structuring Broadcast Audio for Information Access

One rapidly expanding application area for state-of-the-art speech recognition technology is the automatic processing of broadcast audiovisual data for information access. Since much of the linguistic informat...

Authors: Jean-Luc Gauvain and Lori Lamel

Automatic Hierarchical Color Image Classification

Organizing images into semantic categories can be extremely useful for content-based image retrieval and image annotation. Grouping images into semantic classes is a difficult problem, however. Image classific...

Authors: Jing Huang, S. Ravi Kumar and Ramin Zabih

Search the Audio, Browse the Video—A Generic Paradigm for Video Collections

The amount of digital video being shot, captured, and stored is growing at a rate faster than ever before. The large amount of stored video is not penetrable without efficient video indexing, retrieval, and br...

Authors: Arnon Amir, Savitha Srinivasan and Alon Efrat

Motion Pattern-Based Video Classification and Retrieval

Today′s content-based video retrieval technologies are still far from human′s requirements. A fundamental reason is the lack of content representation that is able to bridge the gap between visual features and...

Authors: Yu-Fei Ma and Hong-Jiang Zhang

Summarizing Audiovisual Contents of a Video Program

In this paper, we focus on video programs that are intended to disseminate information and knowledge such as news, documentaries, seminars, etc, and present an audiovisual summarization system that summarizes ...

Authors: Yihong Gong

Musical Instrument Timbres Classification with Spectral Features

A set of features is evaluated for recognition of musical instruments out of monophonic musical signals. Aiming to achieve a compact representation, the adopted features regard only spectral characteristics of...

Authors: Giulio Agostini, Maurizio Longari and Emanuele Pollastri

Combined Wavelet Video Coding and Error Control for Internet Streaming and Multicast

This paper proposes an integrated approach to Internet video streaming and multicast (e.g., receiver-driven layered multicast (RLM) by McCanne) based on combined wavelet video coding and error control. We desi...

Authors: Tianli Chu and Zixiang Xiong

An Acoustic Human-Machine Front-End for Multimedia Applications

A concept of robust adaptive beamforming integrating stereophonic acoustic echo cancellation is presented which reconciles the need for low-computational complexity and efficient adaptive filtering with versat...

Authors: Wolfgang Herbordt, Herbert Buchner and Walter Kellermann

3D Scan-Based Wavelet Transform and Quality Control for Video Coding

Wavelet coding has been shown to achieve better compression than DCT coding and moreover allows scalability. 2D DWT can be easily extended to 3D and thus applied to video coding. However, 3D subband coding of ...

Authors: Christophe Parisot, Marc Antonini and Michel Barlaud

Comparison of Multiepisode Video Summarization Algorithms

This paper presents a comparison of some methodologies for the automatic construction of video summaries. The work is based on the simulated user principle to evaluate the quality of a video summary in a way t...

Authors: Itheri Yahiaoui, Bernard Merialdo and Benoit Huet

Embedding Color Watermarks in Color Images

Robust watermarking with oblivious detection is essential to practical copyright protection of digital images. Effective exploitation of the characteristics of human visual perception to color stimuli helps to...

Authors: Chun-Hsien Chou and Tung-Lin Wu

Editorial

Authors: Jean-Luc Dugelay and Kenneth Rose

Sinusoidal Analysis-Synthesis of Audio Using Perceptual Criteria

This paper presents a new method for the selection of sinusoidal components for use in compact representations of narrowband audio. The method consists of ranking and selecting the most perceptually relevant s...

Authors: Ted Painter and Andreas Spanias

Unbalanced Multiple-Description Video Coding with Rate-Distortion Optimization

We propose to use multiple-description coding (MDC) to protect video information against packet losses and delay, while also ensuring that it can be decoded using a standard decoder. Video data are encoded int...

Authors: David Comas, Raghavendra Singh, Antonio Ortega and Ferran Marqués

Message from the Editor-in-Chief

Authors: Marc Moonen

Retrieval by Local Motion

Motion feature plays an important role in video retrieval. The current literature mostly addresses motion retrieval only by camera motion and global motion of individual video objects in a video scene. In this...

Authors: Berna Erol and Faouzi Kossentini

The Spirit Will Continue

Authors: K. J. Ray Liu

Noncoherent Multiuser Communications: Multistage Detection and Selective Filtering

We consider noncoherent multiuser detection techniques for a system employing nonlinear modulation of nonorthogonal signals. Our aim is to investigate near-optimum noncoherent multiuser-detection techniques th...

Authors: Rajnish Sinha, Aylin Yener and Roy D. Yates

Adaptive Near-Optimal Multiuser Detection Using a Stochastic and Hysteretic Hopfield Net Receiver

This paper proposes a novel adaptive MUD algorithm for a wide variety (practically any kind) of interference limited systems, for example, code division multiple access (CDMA). The algorithm is based on recent...

Authors: Gábor Jeney, János Levendovszky, László Pap and EC van der Meulen

Blind Adaptive Decorrelating RAKE (DRAKE) Downlink Receiver for Space-Time Block Coded Multipath CDMA

A downlink receiver is proposed for space-time block coded CDMA systems operating in multipath channels. By combining the powerful RAKE receiver concept for a frequency selective channel with space-time decodi...

Authors: Sudharman K. Jayaweera and H. Vincent Poor

Simultaneous Principal-Component Extraction with Application to Adaptive Blind Multiuser Detection

SIPEX-G is a fast-converging, robust, gradient-based PCA algorithm that has been recently proposed by the authors. Its superior performance in synthetic and real data compared with its benchmark counterparts m...

Authors: Deniz Erdogmus, Yadunandana N. Rao, Kenneth E. Hild II and Jose C. Principe

Reduced-Rank Adaptive Filtering Using Krylov Subspace

A unified view of several recently introduced reduced-rank adaptive filters is presented. As all considered methods use Krylov subspace for rank reduction, the approach taken in this work is inspired from Kryl...

Authors: Sergueï Burykh and Karim Abed-Meraim

On the Blind Estimation of Baud-Rate Equalizer Performance

This paper proposes a new method for carrying out joint blind equalization and blind estimation of the bit-error-rate (BER) in the output of baud-rate FIR equalizers. A simple test for assessing decision error...

Authors: João-Batista Destro-Filho

Space-Time Coded MC-CDMA: Blind Channel Estimation, Identifiability, and Receiver Design

Integrating the strengths of multicarrier (MC) modulation and code division multiple access (CDMA), MC-CDMA systems are of great interest for future broadband transmissions. This paper considers the problem of...

Authors: Wei Sun and Hongbin Li

Multiuser Delay-Tracking CDMA Receiver

We propose to integrate delay tracking into a successive interference cancellation (SIC) code division multiple access (CDMA) multiuser detector. Delay-robust SIC was initially proposed for CDMA multiuser dete...

Authors: Wei Zha and Steven D. Blostein

Noise Cancellation with Static Mixtures of a Nonstationary Signal and Stationary Noise

We address the problem of cancelling a stationary noise component from its static mixtures with a nonstationary signal of interest. Two different approaches, both based on second-order statistics, are consider...

Authors: Sharon Gannot and Arie Yeredor

A suboptimal Iterative Method for Maximum-Likelihood Sequence Estimation in a Multipath Context

We present an iterative semiblind suboptimal maximum-likelihood sequence estimation (MLSE) method for single-carrier block transmission over stationary multipath channels. This suboptimal ML detector is based ...

Authors: Olivier Rousseaux, Geert Leus and Marc Moonen

Adaptive Transmitter Precoding for Time Division Duplex CDMA in Fading Multipath Channels: Strategy and Analysis

The recently developed blind adaptive techniques for multiuser detection in code division multiple access (CDMA) systems offer an attractive compromise of performance and complexity. However, the desire to fur...

Authors: Daryl Reynolds, Anders Høst-Madsen and Xiaodong Wang

Blind Reduced-Rank MMSE Detector for DS-CDMA Systems

We first develop a reduced-rank minimum mean squared error (MMSE) detector for direct-sequence (DS) code division multiple access (CDMA) by forcing the linear MMSE detector to lie in a signal subspace of a red...

Authors: Xiaodong Cai, Hongya Ge and Ali N. Akansu

Further Study on MOE-Based Multiuser Detection in Unknown Multipath

The minimum output energy (MOE) receiver has been developed for multiuser detection when multipath distortion is present. Its performance has been shown to be very close to the minimum mean-square-error (MMSE)...

Authors: Zhengyuan Xu

Multiuser Channel Estimation from Higher-Order Statistical Matrix Pencil

This paper presents a new statistical approach to the blind estimation of linear multiple-input multiple-output (MIMO) channels with finite impulse response. A matrix pencil is constructed from a set of fourth...

Authors: Jing Liang and Zhi Ding

Equivalence of Linear MMSE Detection in DS-CDMA and MC-CDMA Systems over Time and Frequency Selective Channels

The goal of this paper is to compare the performance of the linear minimum mean square error (MMSE) detector for a class of code division multiple access (CDMA) systems in time and frequency selective channels...

Authors: Tamer A. Kadous and Akbar M. Sayeed

Editorial

Authors: Zhi Ding, Xiaodong Wang and Marco Lops

Dynamic Bayesian Networks for Audio-Visual Speech Recognition

The use of visual features in audio-visual speech recognition (AVSR) is justified by both the speech generation mechanism, which is essentially bimodal in audio and visual representation, and by the need for f...

Authors: Ara V. Nefian, Luhong Liang, Xiaobo Pi, Xiaoxing Liu and Kevin Murphy

On the Relationship between Face Movements, Tongue Movements, and Speech Acoustics

This study examines relationships between external face movements, tongue movements, and speech acoustics for consonant-vowel (CV) syllables and sentences spoken by two male and two female talkers with differe...

Authors: Jintao Jiang, Abeer Alwan, Patricia A. Keating, Edward T. Auer Jr. and Lynne E. Bernstein

Editorial

Authors: Chalapathy Neti, Gerasimos Potamianos, Juergen Luettin and Eric Vatikiotis-Bateson

Some Results on the Wavelet Packet Decomposition of Nonstationary Processes

Wavelet/wavelet packet decomposition has become a very useful tool in describing nonstationary processes. Important examples of nonstationary processes encountered in practice are cyclostationary processes or ...

Authors: Sami Touati and Jean-Christophe Pesquet

Joint Audio-Visual Tracking Using Particle Filters

It is often advantageous to track objects in a scene using multimodal information when such information is available. We use audio as a complementary modality to video data, which, in comparison to vision, can...

Authors: Dmitry N. Zotkin, Ramani Duraiswami and Larry S. Davis

Audio-Visual Speech Recognition Using MPEG-4 Compliant Visual Features

We describe an audio-visual automatic continuous speech recognition system, which significantly improves speech recognition performance over a wide range of acoustic noise levels, as well as under clean audio ...

Authors: Petar S. Aleksic, Jay J. Williams, Zhilin Wu and Aggelos K. Katsaggelos