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2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO)最新文献

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Multibit versus multilevel embedding in high capacity difference expansion reversible watermarking 高容量差分扩展可逆水印中的多比特与多电平嵌入
2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO) Pub Date : 2012-10-18 DOI: 10.5281/ZENODO.43277
D. Coltuc, Adrian Tudoroiu
{"title":"Multibit versus multilevel embedding in high capacity difference expansion reversible watermarking","authors":"D. Coltuc, Adrian Tudoroiu","doi":"10.5281/ZENODO.43277","DOIUrl":"https://doi.org/10.5281/ZENODO.43277","url":null,"abstract":"The classical difference expansion (DE) reversible watermarking expands two times a difference in order to embed one bit of data. The upper limit of such DE schemes in a single embedding level is usually bounded by 1 bpp. In order to obtain more than 1 bpp, several embedding stages are chained. The multibit DE schemes expand n times the difference in order to embed up to log2 n bpp. This paper proposes a multibit extension of the difference expansion reversible watermarking and compares the results with the multilevel embedding case. The multibit reversible watermarking outperforms the multilevel one both in capacity and quality. Experimental results on standard test images are provided.","PeriodicalId":201182,"journal":{"name":"2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115384205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 20
An identifiability criterion in the presence of random nuisance parameters 存在随机干扰参数时的可识别性准则
2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO) Pub Date : 2012-10-18 DOI: 10.5281/ZENODO.42882
S. Fortunati, F. Gini, M. Greco, A. Farina, A. Graziano, S. Giompapa
{"title":"An identifiability criterion in the presence of random nuisance parameters","authors":"S. Fortunati, F. Gini, M. Greco, A. Farina, A. Graziano, S. Giompapa","doi":"10.5281/ZENODO.42882","DOIUrl":"https://doi.org/10.5281/ZENODO.42882","url":null,"abstract":"This paper concerns with the identifiability of an unknown deterministic vector in the presence of random nuisance parameters. In these cases, the classical definition of identifiability, which requires calculation of the Fisher Information Matrix (FIM) and of its rank, is often difficult or impossible to be implemented. Instead, the Modified FIM (MFIM) can be usually computed. We generalize the main results on parameter identifiability to take the presence of random nuisance parameters into account. We provide an alternative definition of identifiability that can be always applied also in the presence of nuisance parameters and we investigate the relationships between the classical and the new identifiability conditions. Finally, the new definition of identifiability is applied to a common estimation problem in netted radar systems: the relative grid-locking problem.","PeriodicalId":201182,"journal":{"name":"2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121834483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
On spectral analysis with nonuniform frequency resolution of nonstationary stochastic processes 非平稳随机过程的非均匀频率分辨率频谱分析
2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO) Pub Date : 2012-10-18 DOI: 10.5281/ZENODO.42995
A. Napolitano, Ivana Perna
{"title":"On spectral analysis with nonuniform frequency resolution of nonstationary stochastic processes","authors":"A. Napolitano, Ivana Perna","doi":"10.5281/ZENODO.42995","DOIUrl":"https://doi.org/10.5281/ZENODO.42995","url":null,"abstract":"Spectral analysis with nonuniform frequency resolution of nonstationary stochastic processes is addressed. The frequency-warping operation aimed at increasing the frequency resolution is shown to modify the nonstationarity kind of the analyzed process. Specifically, in several cases of interest, the frequency-warped process is shown to belong to the recently introduced class of the spectrally correlated processes. Spectral correlation density estimation is performed by frequency smoothing the periodogram along curves in the bifrequency plane instead of lines with unit slopes as in the case of wide-sense stationary and almost-cyclostationary processes. Application to cyclic spectral analysis of the GPS-L1 signal is considered.","PeriodicalId":201182,"journal":{"name":"2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115824007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Likelihood updating for Gauss-Gauss detection 高斯-高斯检测的似然更新
2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO) Pub Date : 2012-10-18 DOI: 10.5281/ZENODO.43256
N. Klausner, M. Azimi-Sadjadi
{"title":"Likelihood updating for Gauss-Gauss detection","authors":"N. Klausner, M. Azimi-Sadjadi","doi":"10.5281/ZENODO.43256","DOIUrl":"https://doi.org/10.5281/ZENODO.43256","url":null,"abstract":"This paper investigates the effects of incrementally adding new data to the classical Gauss-Gauss detector for testing between the known covariance matrices in competing multivariate models. We show that updating the likelihood ratio and J-divergence as a result of general data augmentation inherently involves linearly estimating the new data from the old. Using the change in divergence and the eigenstructure of a whitened error covariance matrix, a reduced-rank version of the update is built. A simulation example of a single narrow-band source in the sensing environment of multiple uniform linear arrays (ULA's) is given showing the practicality of adding data in multi-static sonar applications.","PeriodicalId":201182,"journal":{"name":"2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO)","volume":"879 30","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120875583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Efficient image registration for the analysis of different phases of contrast-enhanced liver CT data 有效的图像配准用于分析不同阶段的肝脏CT增强数据
2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO) Pub Date : 2012-10-18 DOI: 10.5281/ZENODO.42871
R. Verdú, J. Larrey-Ruiz, J. Morales-Sánchez, F. Lopez, V. Naranjo, M. A. Raya, R. Lopez
{"title":"Efficient image registration for the analysis of different phases of contrast-enhanced liver CT data","authors":"R. Verdú, J. Larrey-Ruiz, J. Morales-Sánchez, F. Lopez, V. Naranjo, M. A. Raya, R. Lopez","doi":"10.5281/ZENODO.42871","DOIUrl":"https://doi.org/10.5281/ZENODO.42871","url":null,"abstract":"This paper describes the image registration block developed in the hepatic planner HepaPlan. The proposed method is intended to support clinical decisions about treatment of liver pathologies. The initial stage is the segmentation of the liver tissue as well as its internal structures and tumours in contrast-enhanced CT volumes. The second stage is non-rigid motion compensation due to CT data are acquired at different times, in arterial phase and venous phase. This image registration is necessary in order to fusion contrast-enhanced CT data and then to ease 3D volumetric measures, visualization of the liver and tumour, and to make comparisons with studies of the same patient at earlier times.","PeriodicalId":201182,"journal":{"name":"2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121084437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Catalog-based single-channel speech-music separation with the Itakura-Saito divergence 基于目录的单通道语音-音乐分离与Itakura-Saito分歧
2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO) Pub Date : 2012-10-18 DOI: 10.5072/ZENODO.21056
Cemil Demir, A. Cemgil, M. Saraçlar
{"title":"Catalog-based single-channel speech-music separation with the Itakura-Saito divergence","authors":"Cemil Demir, A. Cemgil, M. Saraçlar","doi":"10.5072/ZENODO.21056","DOIUrl":"https://doi.org/10.5072/ZENODO.21056","url":null,"abstract":"In this study, we introduce a catalog-based single-channel speech-music separation method with the Itakura-Saito (IS) divergence measure. Previously, we have developed the catalog-based separation method with the Kullback-Leibler (KL) divergence. In the probabilistic point of view, IS divergence corresponds to a complex Gaussian observation model. Comparison of divergence measures or observation models in speech-music separation task is carried out with both of catalog-based and traditional Non-Negative Matrix Factorization (NMF) methods. The separation performance is compared using Speech-to-Music Ratio (SMR), Speech-to-Artifact Ratio (SAR) and speech recognition performance measure via the Word Error Rate (WER). We showed that, using IS divergence in both of catalog-based or NMF based speech-music separation methods yields better separation performance than KL divergence. Moreover, in this study, it is shown that catalog-based approaches with both divergence measures outperform traditional NMF based approaches in speech recognition experiments.","PeriodicalId":201182,"journal":{"name":"2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125061068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
User selection in the MIMO BC MIMO BC中的用户选择
2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO) Pub Date : 2012-10-18 DOI: 10.5281/ZENODO.43249
Yohan Lejosne, D. Slock, Y. Yuan-Wu
{"title":"User selection in the MIMO BC","authors":"Yohan Lejosne, D. Slock, Y. Yuan-Wu","doi":"10.5281/ZENODO.43249","DOIUrl":"https://doi.org/10.5281/ZENODO.43249","url":null,"abstract":"It is well-known that user selection not only leads to multiuser diversity but also to decreased suboptimality of simple beamforming (BF) techniques compared to optimal Dirty Paper Coding (DPC) approaches in the Broadcast Channel (BC), otherwise called the multi-user (MU) downlink, in a cell with a base station and mobile terminals equipped with multiple antennas (MU-MIMO). User selection by exhaustive search can be simplified to greedy approaches, in which one user gets added at a time. In this paper, we review an approximate criterion for MISO BF-style selection. For a sufficient amount of users, multiple receive antennas do not lead to increased spatial multiplexing, but we indicate how they affect the high SNR rate offset. The resulting added diversity can be exploited at the cost of more involved user selection and transceiver design. We thus propose a novel receiver design for BF-style MU-MIMO stream selection.","PeriodicalId":201182,"journal":{"name":"2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116541913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Automatic LF-model fitting to the glottal source waveform by extended Kalman filtering 扩展卡尔曼滤波对声门源波形进行自动低频模型拟合
2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO) Pub Date : 2012-10-18 DOI: 10.5281/ZENODO.42972
Haoxuan Li, Ronan Scaife, Darragh O'Brien
{"title":"Automatic LF-model fitting to the glottal source waveform by extended Kalman filtering","authors":"Haoxuan Li, Ronan Scaife, Darragh O'Brien","doi":"10.5281/ZENODO.42972","DOIUrl":"https://doi.org/10.5281/ZENODO.42972","url":null,"abstract":"A new method for automatically fitting the Liljencrants-Fant (LF) model to the time domain waveform of the glottal flow derivative is presented in this paper. By applying an extended Kalman filter (EKF) to track the LF-model shape-controlling parameters and dynamically searching for a globally minimal fitting error, the algorithm can accurately fit the LF-model to the inverse filtered glottal flow derivative. Experimental results show that the method has better performance for both synthetic and real speech signals compared to a standard time-domain LF-model fitting algorithm. By offering a new method to estimate the glottal source LF-model parameters, the proposed algorithm can be utilised in many applications.","PeriodicalId":201182,"journal":{"name":"2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122311452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Design of perfect phase-quantized sequences with low peak-to-average-power ratio 低峰均功率比的完美相位量化序列设计
2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO) Pub Date : 2012-10-18 DOI: 10.5281/ZENODO.52313
Mojtaba Soltanalian, P. Stoica
{"title":"Design of perfect phase-quantized sequences with low peak-to-average-power ratio","authors":"Mojtaba Soltanalian, P. Stoica","doi":"10.5281/ZENODO.52313","DOIUrl":"https://doi.org/10.5281/ZENODO.52313","url":null,"abstract":"Perfect phase-quantized unimodular sequences with entries in {x ϵ C|xm = 1} have optimal peak-to-average-power ratio (PAR); however, they are extremely rare. For active sensing or communication systems which are able to tolerate sub-optimal PAR values, we show how to construct phase-quantized sequences possessing both virtually perfect periodic autocorrelation and low PAR. Numerical examples are provided to illustrate the performance of the proposed methods.","PeriodicalId":201182,"journal":{"name":"2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO)","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114522275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Double pseudo affine projection algorithm for speech enhancement and acoustic noise reduction 双伪仿射投影算法用于语音增强和降噪
2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO) Pub Date : 2012-10-18 DOI: 10.5281/ZENODO.52053
M. Djendi, P. Scalart
{"title":"Double pseudo affine projection algorithm for speech enhancement and acoustic noise reduction","authors":"M. Djendi, P. Scalart","doi":"10.5281/ZENODO.52053","DOIUrl":"https://doi.org/10.5281/ZENODO.52053","url":null,"abstract":"In this paper, we consider the speech enhancement problem in a moving car through a blind source separation scheme involving two closely spaced microphones. We propose the use of a new double pseudo affine projection DPAP algorithm to estimate and suppress coherent noise components from speech. The proposed DPAP algorithm is applied to the forward blind source separation FBSS structure and combined with a new whitening scheme of its two inputs. In order to avoid the use of a manual voice activity detector in the new DPAP algorithm, we have adapted then applied the technique proposed in [1] to the FBSS structure and for the new proposed algorithm. The simulation results show that the DPAP algorithm, when controlled by the proposed technique is able to fully cancel the correlated noise components from speech.","PeriodicalId":201182,"journal":{"name":"2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122036128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 19
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