EURASIP Journal on Advances in Signal Processing
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Robust localization in wireless networks from corrupted signals
EURASIP Journal on Advances in Signal Processing - - 2021
We address the problem of timing-based localization in wireless networks, when an unknown fraction of data is corrupted by non-ideal propagation conditions. While timing-based techniques can enable accurate localization, they are sensitive to corrupted data. We develop a robust method that is applicable to a range of localization techniques, including time-of-arrival, time-difference-of-arrival an...... hiện toàn bộ
Digital Watermarks Enabling E-Commerce Strategies: Conditional and User Specific Access to Services and Resources
EURASIP Journal on Advances in Signal Processing - Tập 2002 - Trang 1-11 - 2002
Digital watermarking is well known as enabling technology to prove ownership on copyrighted material, detect originators of illegally made copies, monitor the usage of the copyrighted multimedia data and analyze the spread spectrum of the data over networks and servers. Research has shown that data hiding techniques can be applied successfully to other application areas like manipulations recognit...... hiện toàn bộ
Speech improvement in noisy reverberant environments using virtual microphones along with proposed array geometry
EURASIP Journal on Advances in Signal Processing - Tập 2022 - Trang 1-20 - 2022
This paper proposes a novel approach for improving the speech of a single speaker in noisy reverberant environments. The proposed approach is based on using a beamformer with a large number of virtual microphones with the suggested arrangement on an open sphere. Our method takes into account virtual microphone signal synthesizing using the non-parametric sound field reproduction in the spherical h...... hiện toàn bộ
Speech Source Separation in Convolutive Environments Using Space-Time-Frequency Analysis
EURASIP Journal on Advances in Signal Processing - Tập 2006 - Trang 1-11 - 2006
We propose a new method for speech source separation that is based on directionally-disjoint estimation of the transfer functions between microphones and sources at different frequencies and at multiple times. The spatial transfer functions are estimated from eigenvectors of the microphones' correlation matrix. Smoothing and association of transfer function parameters across different frequencies ...... hiện toàn bộ
IOT security privacy protection mechanism and mechanical structure design simulation optimization
EURASIP Journal on Advances in Signal Processing - Tập 2021 - Trang 1-14 - 2021
Once the Internet of Things was proposed, it has received great attention from all walks of life and has become one of the top ten technologies that change the world. Therefore, more and more people are engaged in the research of the Internet of Things, after the unremitting efforts of all seniors. Now the Internet of Things has been applied to every aspect of our lives. However, in the applicatio...... hiện toàn bộ
Self-adaptive algorithm for segmenting skin regions
EURASIP Journal on Advances in Signal Processing - Tập 2014 - Trang 1-22 - 2014
In this paper, we introduce a new self-adaptive algorithm for segmenting human skin regions in color images. Skin detection and segmentation is an active research topic, and many solutions have been proposed so far, especially concerning skin tone modeling in various color spaces. Such models are used for pixel-based classification, but its accuracy is limited due to high variance and low specific...... hiện toàn bộ
A Unified Transform for LTI Systems—Presented as a (Generalized) Frame
EURASIP Journal on Advances in Signal Processing - - 2006
Fast Minimization by Iterative Thresholding for Multidimensional NMR Spectroscopy
EURASIP Journal on Advances in Signal Processing - Tập 2007 - Trang 1-10 - 2007
Fast multidimensional NMR is important in chemical shift assignment and for studying structures of large proteins. We present the first method which takes advantage of the sparsity of the wavelet representation of the NMR spectra and reconstructs the spectra from partial random measurements of its free induction decay (FID) by solving the following optimization problem: min
...... hiện toàn bộ
Offline Signature Verification Using the Discrete Radon Transform and a Hidden Markov Model
EURASIP Journal on Advances in Signal Processing - Tập 2004 - Trang 1-13 - 2004
We developed a system that automatically authenticates offline handwritten signatures using the discrete Radon transform (DRT) and a hidden Markov model (HMM). Given the robustness of our algorithm and the fact that only global features are considered, satisfactory results are obtained. Using a database of 924 signatures from 22 writers, our system achieves an equal error rate (EER) of 18% when on...... hiện toàn bộ
A Survey of Watermarking Algorithms for Image Authentication
EURASIP Journal on Advances in Signal Processing - Tập 2002 - Trang 1-9 - 2002
Digital image manipulation software is now readily available on personal computers. It is therefore very simple to tamper with any image and make it available to others. Insuring digital image integrity has therefore become a major issue. Watermarking has become a popular technique for copyright enforcement and image authentication. The aim of this paper is to present an overview of emerging techn...... hiện toàn bộ
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