Articles

An adaptive dynamically weighted median filter for impulse noise removal

A new impulsive noise removal filter, adaptive dynamically weighted median filter (ADWMF), is proposed. A popular method for removing impulsive noise is a median filter whereas the weighted median filter and c...

Authors: Sajid Khan and Dong-Ho Lee

Approximate equiangular tight frames for compressed sensing and CDMA applications

Performance guarantees for recovery algorithms employed in sparse representations, and compressed sensing highlights the importance of incoherence. Optimal bounds of incoherence are attained by equiangular uni...

Authors: Evaggelia Tsiligianni, Lisimachos P. Kondi and Aggelos K. Katsaggelos

Sequential estimation of intrinsic activity and synaptic input in single neurons by particle filtering with optimal importance density

This paper deals with the problem of inferring the signals and parameters that cause neural activity to occur. The ultimate challenge being to unveil brain’s connectivity, here we focus on a microscopic vision...

Authors: Pau Closas and Antoni Guillamon

DOA estimation for conformal vector-sensor array using geometric algebra

In this paper, the problem of direction of arrival (DOA) estimation is considered in the case of multiple polarized signals impinging on the conformal electromagnetic vector-sensor array (CVA). We focus on mod...

Authors: Tianzhen Meng, Minjie Wu and Naichang Yuan

Efficient multichannel acoustic echo cancellation using constrained tap selection schemes in the subband domain

Acoustic echo cancellation (AEC) is a key speech enhancement technology in speech communication and voice-enabled devices. AEC systems employ adaptive filters to estimate the acoustic echo paths between the lo...

Authors: Naveen Kumar Desiraju, Simon Doclo and Tobias Wolff

NLOS mitigation in indoor localization by marginalized Monte Carlo Gaussian smoothing

One of the main challenges in indoor time-of-arrival (TOA)-based wireless localization systems is to mitigate non-line-of-sight (NLOS) propagation conditions, which degrade the overall positioning performance....

Authors: Jordi Vilà-Valls and Pau Closas

A novel aliasing-free subband information fusion approach for wideband sparse spectral estimation

Wideband sparse spectral estimation is generally formulated as a multi-dictionary/multi-measurement (MD/MM) problem which can be solved by using group sparsity techniques. In this paper, the MD/MM problem is r...

Authors: Ji-An Luo, Xiao-Ping Zhang and Zhi Wang

DOA-informed source extraction in the presence of competing talkers and background noise

A desired speech signal in hands-free communication systems is often degraded by noise and interfering speech. Even though the number and locations of the interferers are often unknown in practice, it is justi...

Authors: Maja Taseska and Emanuël A. P. Habets

Efficient reversible data hiding in encrypted image with public key cryptosystem

This paper proposes a new reversible data hiding scheme for encrypted images by using homomorphic and probabilistic properties of Paillier cryptosystem. The proposed method can embed additional data directly i...

Authors: Shijun Xiang and Xinrong Luo

Iterative robust adaptive beamforming

The minimum power distortionless response beamformer has a good interference rejection capability, but the desired signal will be suppressed if signal steering vector or data covariance matrix is not precise. ...

Authors: Yang Li, Hong Ma and Li Cheng

Variable forgetting factor mechanisms for diffusion recursive least squares algorithm in sensor networks

In this work, we present low-complexity variable forgetting factor (VFF) techniques for diffusion recursive least squares (DRLS) algorithms. Particularly, we propose low-complexity VFF-DRLS algorithms for dist...

Authors: Ling Zhang, Yunlong Cai, Chunguang Li and Rodrigo C. de Lamare

The Ensemble Kalman filter: a signal processing perspective

The ensemble Kalman filter (EnKF) is a Monte Carlo-based implementation of the Kalman filter (KF) for extremely high-dimensional, possibly nonlinear, and non-Gaussian state estimation problems. Its ability to ...

Authors: Michael Roth, Gustaf Hendeby, Carsten Fritsche and Fredrik Gustafsson

Robust transceiver design for reciprocal M × N interference channel based on statistical linearization approximation

This paper focuses on robust transceiver design for throughput enhancement on the interference channel (IC), under imperfect channel state information (CSI). In this paper, two algorithms are proposed to impro...

Authors: Ali D. Mayvan, Hassan Aghaeinia and Mohammad Kazemi

Particle rejuvenation of Rao-Blackwellized sequential Monte Carlo smoothers for conditionally linear and Gaussian models

This paper focuses on sequential Monte Carlo approximations of smoothing distributions in conditionally linear and Gaussian state spaces. To reduce Monte Carlo variance of smoothers, it is typical in these mod...

Authors: Ngoc Minh Nguyen, Sylvain Le Corff and Éric Moulines

A mesh-free algorithm for ROF model

The total variation (TV) denoising method is a PDE-based technique that preserves the edges well but has undesirable staircase effect in some cases, namely, the translation of smooth regions (ramps) into piece...

Authors: Mushtaq Ahmad Khan, Wen Chen, Asmat Ullah and Zhuojia Fu

3D shape representation with spatial probabilistic distribution of intrinsic shape keypoints

The accelerated advancement in modeling, digitizing, and visualizing techniques for 3D shapes has led to an increasing amount of 3D models creation and usage, thanks to the 3D sensors which are readily availab...

Authors: Vijaya K. Ghorpade, Paul Checchin, Laurent Malaterre and Laurent Trassoudaine

Robust depth enhancement and optimization based on advanced multilateral filters

Stereo matching of two distanced cameras and structured-light RGB-D cameras are the two common ways to capture the depth map, which conveys the per-pixel depth information of the image. However, the results wi...

Authors: Ting-An Chang, Yang-Ting Chou and Jar-Ferr Yang

Comments on ‘Area and power efficient DCT architecture for image compression’ by Dhandapani and Ramachandran

In [Dhandapani and Ramachandran, “Area and power efficient DCT architecture for image compression”, EURASIP Journal on Advances in Signal Processing 2014, 2014:180] the authors claim to have introduced an appr...

Authors: Renato J. Cintra and Fábio M. Bayer

Binaural noise reduction via cue-preserving MMSE filter and adaptive-blocking-based noise PSD estimation

Binaural noise reduction, with applications for instance in hearing aids, has been a very significant challenge. This task relates to the optimal utilization of the available microphone signals for the estimat...

Authors: Masoumeh Azarpour and Gerald Enzner

Low-complexity DOA estimation from short data snapshots for ULA systems using the annihilating filter technique

This paper addresses the problem of DOA estimation using uniform linear array (ULA) antenna configurations. We propose a new low-cost method of multiple DOA estimation from very short data snapshots. The new e...

Authors: Faouzi Bellili, Souheib Ben Amor, Sofiène Affes and Ali Ghrayeb

Special issue: advanced techniques for radar signal processing

Authors: D. Orlando, C. Hao, A. Aubry, G. Cui, A. C. Gurbuz and S. Gazor

A splitting algorithm for a novel regularization of Perona-Malik and application to image restoration

In this paper, we focus on a numerical method of a problem called the Perona-Malik inequality which we use for image denoising. This model is obtained as the limit of the Perona-Malik model and the p-Laplacian op...

Authors: Fahd Karami, Lamia Ziad and Khadija Sadik

Canonic FFT flow graphs for real-valued even/odd symmetric inputs

Canonic real-valued fast Fourier transform (RFFT) has been proposed to reduce the arithmetic complexity by eliminating redundancies. In a canonic N-point RFFT, the number of signal values at each stage is canonic...

Authors: Yingjie Lao and Keshab K. Parhi

Multi-linear sparse reconstruction for SAR imaging based on higher-order SVD

This paper focuses on the spotlight synthetic aperture radar (SAR) imaging for point scattering targets based on tensor modeling. In a real-world scenario, scatterers usually distribute in the block sparse pat...

Authors: Yu-Fei Gao, Guan Gui, Xun-Chao Cong, Yue Yang, Yan-Bin Zou and Qun Wan

Human tracking over camera networks: a review

In recent years, automated human tracking over camera networks is getting essential for video surveillance. The tasks of tracking human over camera networks are not only inherently challenging due to changing ...

Authors: Li Hou, Wanggen Wan, Jenq-Neng Hwang, Rizwan Muhammad, Mingyang Yang and Kang Han

Intra-pulse modulation recognition using short-time ramanujan Fourier transform spectrogram

Intra-pulse modulation recognition under negative signal-to-noise ratio (SNR) environment is a research challenge. This article presents a robust algorithm for the recognition of 5 types of radar signals with ...

Authors: Xiurong Ma, Dan Liu and Yunlong Shan

Learning from label proportions for SAR image classification

Synthetic aperture radar (SAR) image classification plays a key role in SAR interpretation. Due to the cost and difficulty of truth labeling for SAR images, the newly labeled samples available for image classi...

Authors: Yongke Ding, Yuanxiang Li and Wenxian Yu

Two-way DF relaying assisted D2D communication: ergodic rate and power allocation

In this paper, we investigate the ergodic rate for a device-to-device (D2D) communication system aided by a two-way decode-and-forward (DF) relay node. We first derive closed-form expressions for the ergodic r...

Authors: Yiyang Ni, Yuxi Wang, Shi Jin, Kai-Kit Wong and Hongbo Zhu

Computer-aided detection of breast lesions in DCE-MRI using region growing based on fuzzy C-means clustering and vesselness filter

A computer-aided detection (CAD) system is introduced in this paper for detection of breast lesions in dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI). The proposed CAD system firstly compensate...

Authors: Shahriar B. Shokouhi, Aida Fooladivanda and Nasrin Ahmadinejad

Spectrum sensing based on cumulative power spectral density

This paper presents new spectrum sensing algorithms based on the cumulative power spectral density (CPSD). The proposed detectors examine the CPSD of the received signal to make a decision on the absence/prese...

Authors: A. Nasser, A. Mansour, K. C. Yao, H. Abdallah and H. Charara

Hybrid digital-analog coding with bandwidth expansion for correlated Gaussian sources under Rayleigh fading

Consider communicating a correlated Gaussian source over a Rayleigh fading channel with no knowledge of the channel signal-to-noise ratio (CSNR) at the transmitter. In this case, a digital system cannot be opt...

Authors: Pradeepa Yahampath

Novel maximum likelihood approach for passive detection and localisation of multiple emitters

In this paper, a novel target acquisition and localisation algorithm (TALA) is introduced that offers a capability for detecting and localising multiple targets using the intermittent “signals-of-opportunity” ...

Authors: Marcel Hernandez

Dynamic configuration management of a multi-standard and multi-mode reconfigurable multi-ASIP architecture for turbo decoding

The multiplication of connected devices goes along with a large variety of applications and traffic types needing diverse requirements. Accompanying this connectivity evolution, the last years have seen consid...

Authors: Vianney Lapotre, Guy Gogniat, Amer Baghdadi and Jean-Philippe Diguet

Erratum to: Object representation for multi-beam sonar image using local higher-order statistics

Authors: Haisen Li, Jue Gao, Weidong Du, Tian Zhou, Chao Xu and Baowei Chen

Focusing high-squint and large-baseline one-stationary bistatic SAR data using keystone transform and enhanced nonlinear chirp scaling based on an ellipse model

This paper deals with the imaging problem for one-stationary bistatic synthetic aperture radar (BiSAR) with high-squint, large-baseline configuration. In this bistatic configuration, accurate focusing of BiSAR...

Authors: Hua Zhong, Song Zhang, Jian Hu and Minhong Sun

Scan statistics with local vote for target detection in distributed system

Target detection has occupied a pivotal position in distributed system. Scan statistics, as one of the most efficient detection methods, has been applied to a variety of anomaly detection problems and signific...

Authors: Junhai Luo and Qi Wu

Theoretical lower bounds for parallel pipelined shift-and-add constant multiplications with n-input arithmetic operators

New theoretical lower bounds for the number of operators needed in fixed-point constant multiplication blocks are presented. The multipliers are constructed with the shift-and-add approach, where every arithme...

Authors: Miriam Guadalupe Cruz Jiménez, Uwe Meyer Baese and Gordana Jovanovic Dolecek

Finite-SNR analysis for partial relaying cooperation with channel coding and opportunistic relay selection

This work studies the performance of a cooperative network which consists of two channel-coded sources, multiple relays, and one destination. To achieve high spectral efficiency, we assume that a single time s...

Authors: Thang X. Vu, Pierre Duhamel, Symeon Chatzinotas and Bjorn Ottersten

Special issue on network coding

Future networks are expected to depart from traditional routing schemes in order to embrace network coding (NC)-based schemes. These have created a lot of interest both in academia and industry in recent years...

Authors: Francisco A. Monteiro, Alister Burr, Ioannis Chatzigeorgiou, Camilla Hollanti, Ioannis Krikidis, Hulya Seferoglu and Vitaly Skachek

Nonlinear Signal and Image Processing—a special issue in honour of Giovanni L. Sicuranza on his seventy-fifth birthday

Authors: Alberto Carini, Giovanni Ramponi and V John Mathews

Robust stereo matching with trinary cross color census and triple image-based refinements

For future 3D TV broadcasting systems and navigation applications, it is necessary to have accurate stereo matching which could precisely estimate depth map from two distanced cameras. In this paper, we first ...

Authors: Ting-An Chang, Xiao Lu and Jar-Ferr Yang

A novel high-frequency encoding algorithm for image compression

In this paper, a new method for image compression is proposed whose quality is demonstrated through accurate 3D reconstruction from 2D images. The method is based on the discrete cosine transform (DCT) togethe...

Authors: Mohammed M. Siddeq and Marcos A. Rodrigues

Sparse and smooth canonical correlation analysis through rank-1 matrix approximation

Canonical correlation analysis (CCA) is a well-known technique used to characterize the relationship between two sets of multidimensional variables by finding linear combinations of variables with maximal corr...

Authors: Abdeldjalil Aïssa-El-Bey and Abd-Krim Seghouane

Joint source and relay optimization for interference MIMO relay networks

This paper considers multiple-input multiple-output (MIMO) relay communication in multi-cellular (interference) systems in which MIMO source-destination pairs communicate simultaneously. It is assumed that due...

Authors: Muhammad R. A. Khandaker and Kai-Kit Wong

Efficient two-dimensional compressive sensing in MIMO radar

Compressive sensing (CS) has been a way to lower sampling rate leading to data reduction for processing in multiple-input multiple-output (MIMO) radar systems. In this paper, we further reduce the computationa...

Authors: Nafiseh Shahbazi, Aliazam Abbasfar and Mohammad Jabbarian-Jahromi

A robust estimator of parameters for \( {\mathcal{G}}_I^0 \)-modeled SAR imagery based on random weighting method

Authors: Cui-Huan Wang, Xian-Bin Wen and Hai-Xia Xu

Image retrieval by information fusion based on scalable vocabulary tree and robust Hausdorff distance

In recent years, Scalable Vocabulary Tree (SVT) has been shown to be effective in image retrieval. However, for general images where the foreground is the object to be recognized while the background is clutte...

Authors: Chang Che, Xiaoyang Yu, Xiaoming Sun and Boyang Yu

Spectral reconstruction of signals from periodic nonuniform subsampling based on a Nyquist folding scheme

Periodic nonuniform sampling occurs in many applications, and the Nyquist folding receiver (NYFR) is an efficient, low complexity, and broadband spectrum sensing architecture. In this paper, we first derive th...

Authors: Kaili Jiang, Jun Zhu and Bin Tang

Design of robust high-order superdirectivity for circular arrays with sensor gain and phase errors

Though the high-order superdirectivity theory proposed in recent years is attractive, it is hard to implement in practice due to its poor robustness to small random array errors. Hence, in this paper, we prese...

Authors: Min Wang, Xiaochuan Ma, Ping Yang, Chengpeng Hao, Xiujuan Feng and Yue Zhang

Extended families of 2D arrays with near optimal auto and low cross-correlation

Families of 2D arrays can be constructed where each array has perfect autocorrelation, and the cross-correlation between any pair of family members is optimally low. We exploit equivalent Hadamard matrices to ...

Authors: I. D. Svalbe and A. Z. Tirkel