发布求助
文献互助 智能选刊 最新文献

2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)最新文献

筛选
英文 中文
Online mvbf adaptation under diffuse noise environments with mimo based noise pre-filtering 基于mimo的噪声预滤波的弥漫噪声环境下的mvbf在线自适应
2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-09-24 DOI: 10.1109/ISSPA.2012.6310562
M. Togami, Y. Kawaguchi, N. Nukaga, Y. Obuchi
{"title":"Online mvbf adaptation under diffuse noise environments with mimo based noise pre-filtering","authors":"M. Togami, Y. Kawaguchi, N. Nukaga, Y. Obuchi","doi":"10.1109/ISSPA.2012.6310562","DOIUrl":"https://doi.org/10.1109/ISSPA.2012.6310562","url":null,"abstract":"A noise-robust MVBF adaptation technique under diffuse noise environments is proposed. The proposed method is compatible with online adaptation and robustness against diffuse noise by combining a semi-online diffuse noise reduction and an online MVBF adaptation technique with sparseness assumption of speech sources. The online sparseness based MVBF adaptation is sensitive to diffuse noise, because diffuse noise is not sparse. However, by using diffuse noise pre-filtering based on local Gaussian modeling which can be regarded as an optimized MIMO(Multi-Input Multi-Output) diffuse noise reduction method from the probabilistic perspective, sparseness of the microphone input signal into the latter part is expected to be improved. The proposed method is evaluated by using speech signal under diffuse noise environments, and the proposed method can reduce more noise source with less distortion than the conventional online sparseness based MVBF adaptation.","PeriodicalId":248763,"journal":{"name":"2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123083563","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
Binarization effects on results of text-line segmentation methods applied on historical documents 二值化对历史文献文本行分割结果的影响
2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310453
Ines Ben Messaoud, H. Amiri, H. E. Abed, V. Märgner
{"title":"Binarization effects on results of text-line segmentation methods applied on historical documents","authors":"Ines Ben Messaoud, H. Amiri, H. E. Abed, V. Märgner","doi":"10.1109/ISSPA.2012.6310453","DOIUrl":"https://doi.org/10.1109/ISSPA.2012.6310453","url":null,"abstract":"Results of document scanning are digital images. Image processing is considered as bidimensional signal processing. Such images are the input of document analysis and recognition systems. Information extraction is one objective of document analysis and recognition systems. Textline extraction is a crucial step of such systems because its output is considered as the input of the recognition step. Most segmentation methods take as input binary images, which explains that binarization methods can affect segmentation results. We study in this paper how does the choice of binarization minimally affects the results of text-line segmentation methods? Several evaluation metrics are used for the comparison between segmentation results. The proposed approach is tested using the benchmarking databases IAM (about 556 images) and IAM historical (about 60 images). The results show that binarization affects the detection rate (DR) and the recognition accuracy (RA) metrics for segmentation evaluation.","PeriodicalId":248763,"journal":{"name":"2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)","volume":"9 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120857732","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: 2
Distributed differential evolution algorithm for PAPR reduction of OFDM signals OFDM信号PAPR降低的分布式差分进化算法
2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310616
Hocine Saadi, J. Chouinard, A. Guessoum
{"title":"Distributed differential evolution algorithm for PAPR reduction of OFDM signals","authors":"Hocine Saadi, J. Chouinard, A. Guessoum","doi":"10.1109/ISSPA.2012.6310616","DOIUrl":"https://doi.org/10.1109/ISSPA.2012.6310616","url":null,"abstract":"Orthogonal frequency division multiplexing (OFDM) is a very powerful multicarrier scheme to mitigate frequency selective fading in wireless channels. However OFDM is affected by high peak to average power ratio (PAPR) conditions. A signal with high PAPR causes severe transmission problems due to the non linearity of high power amplifier (HPA) used at the transmitter end. One of the most promising methods proposed to reduce the PAPR consists of acting on the rotation phases of the OFDM symbols: this is known as the partial transmit sequence (PTS) method. Although this method achieves significant PAPR reduction, it requires an exhaustive search thus has a high computational complexity. To reduce this complexity, we propose in this paper a suboptimal algorithm based on distributed differential evolution algorithm (DDE) with self adaptation of the control parameters. The performance in PAPR reduction is close to that of the optimal case but with a significantly lower number of searches thus leading to a reduction in computational complexity.","PeriodicalId":248763,"journal":{"name":"2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124922485","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
Improving the classification of newborn EEG time-frequency representations using a combined time-frequency signal and image approach 采用时频信号与图像相结合的方法改进新生儿脑电图时频表征的分类
2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310560
B. Boashash, L. Boubchir, G. Azemi
{"title":"Improving the classification of newborn EEG time-frequency representations using a combined time-frequency signal and image approach","authors":"B. Boashash, L. Boubchir, G. Azemi","doi":"10.1109/ISSPA.2012.6310560","DOIUrl":"https://doi.org/10.1109/ISSPA.2012.6310560","url":null,"abstract":"This paper presents new time-frequency (T-F) features to improve the classification of non-stationary signals such as EEG signals. Previous methods were based only on signal features that were derived from the instantaneous frequency and energies of EEG signals in different spectral sub-bands. This paper includes new features that are based on T-F image descriptors which are extracted from the T-F representation considered as an image, using T-F image processing techniques. The results obtained on newborn EEG data, show that the use of image related-features with signal based-features improve the performance of the newborn EEG seizure detection and classification when using multi-SVM classifiers. These results allow the possibility of improving health outcomes for sick babies by early intervention on the basis of the results of the classification of newborn EEG abnormalities.","PeriodicalId":248763,"journal":{"name":"2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125333201","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: 17
Improved azimuth accuracy for a Digital Beamforming perimeter surveillance radar 改进了数字波束形成周界监视雷达的方位精度
2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310468
S. Sivagnanam, M. Pelletier, Patrick Lamontagne, P. Poitevin
{"title":"Improved azimuth accuracy for a Digital Beamforming perimeter surveillance radar","authors":"S. Sivagnanam, M. Pelletier, Patrick Lamontagne, P. Poitevin","doi":"10.1109/ISSPA.2012.6310468","DOIUrl":"https://doi.org/10.1109/ISSPA.2012.6310468","url":null,"abstract":"In Digital Beamforming (DBF) radars, multiple beams are formed simultaneously at different azimuth and/or elevation angles to monitor large areas of interest. In order to estimate the location of a target in azimuth without specifically steering the beams at the target or using special techniques such as monopulse, simple centroid schemes can be used. This assumes that a target is seen by more than one beam, which requires the beam pattern to be somewhat overlapping and that the Signal-to-Noise Ratio (SNR) of the target is sufficient. In this paper, a new azimuth centroid computation scheme using amplitude comparison is presented. Since the digital phased array beam shape is different at each azimuth, each beam is modeled by simple polynomial curve fitting. Simulation and preliminary experimental results show that the proposed method gives better azimuth accuracies compared to other centroid techniques.","PeriodicalId":248763,"journal":{"name":"2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122335947","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: 6
Compressive sensing for through wall radar imaging of stationary scenes using arbitrary data measurements 基于任意数据测量的穿透墙雷达图像压缩感知
2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310503
E. Lagunas, M. Amin, F. Ahmad, M. Nájar
{"title":"Compressive sensing for through wall radar imaging of stationary scenes using arbitrary data measurements","authors":"E. Lagunas, M. Amin, F. Ahmad, M. Nájar","doi":"10.1109/ISSPA.2012.6310503","DOIUrl":"https://doi.org/10.1109/ISSPA.2012.6310503","url":null,"abstract":"In this paper, we deal with removal of wall EM reflections prior to image reconstruction using step-frequency radars. The goal is to enable behind-the-wall target detection and localization from reduced data measurements. In the underlying problem, few frequency observations are available and they differ from one antenna position to another in a SAR imaging system. Because of using a different set of frequencies for different antennas, direct applications of wall clutter mitigation methods, such as subspace and spatial filtering, prove ineffective. To provide these methods with the response measured at the same set of frequencies, a compressive sensing approach is used to reconstruct the range profiles. We use prior knowledge of the wall standoff distance to speed up the convergence of the Orthogonal Matching Pursuit for sparse data reconstruction.","PeriodicalId":248763,"journal":{"name":"2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122377898","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: 13
An EMD-SVM screening system for retina digital images: The effect of kernels and parameters 视网膜数字图像的EMD-SVM筛选系统:核和参数的影响
2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310684
S. Lahmiri, C. Gargour, M. Gabrea
{"title":"An EMD-SVM screening system for retina digital images: The effect of kernels and parameters","authors":"S. Lahmiri, C. Gargour, M. Gabrea","doi":"10.1109/ISSPA.2012.6310684","DOIUrl":"https://doi.org/10.1109/ISSPA.2012.6310684","url":null,"abstract":"The discrete wavelet transform (DWT) and empirical mode decomposition (EMD) are employed to analyze retina digital images in the frequency domain. In particular, statistical features are extracted from high frequency components of the analyzed images. The purpose is to classify normal versus abnormal images. Three different pathologies are considered including, circinates, drusens, and microaneurysms (MA). Support vector machines (SVM) with polynomial and radial basis function kernel are used to classify retina digital images. The simulation results from leave-one-out method (LOOM) show the effectiveness of the EMD-based features over the DWT-based ones. In addition, the polynomial kernel performs better than the radial basis function kernel.","PeriodicalId":248763,"journal":{"name":"2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122575145","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
Signal processing using singular spectrum analysis for nonlinear system identification 信号处理利用奇异谱分析进行非线性系统辨识
2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310648
S. Iranmanesh, A. Miranian, Majid Abdollahzade Karam
{"title":"Signal processing using singular spectrum analysis for nonlinear system identification","authors":"S. Iranmanesh, A. Miranian, Majid Abdollahzade Karam","doi":"10.1109/ISSPA.2012.6310648","DOIUrl":"https://doi.org/10.1109/ISSPA.2012.6310648","url":null,"abstract":"System identification is defined as finding mathematical models of systems, using experimental measurements and observations. This paper proposes an identification approach based on the singular spectrum analysis (SSA) and least squares support vector machines (LS-SVM) model. The SSA is used in the pre-processing stage for de-noising the measurement data and then the LS-SVM model is trained by the de-noised data. The proposed approach was employed for identification of two nonlinear systems. The simulation results demonstrated the promising performance of the proposed approach and favorable capabilities of the SSA for nonlinear system identification.","PeriodicalId":248763,"journal":{"name":"2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)","volume":"282 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122952679","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: 2
Multi-object filtering for pairwise Markov chains 成对马尔可夫链的多目标滤波
2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310573
Y. Petetin, F. Desbouvries
{"title":"Multi-object filtering for pairwise Markov chains","authors":"Y. Petetin, F. Desbouvries","doi":"10.1109/ISSPA.2012.6310573","DOIUrl":"https://doi.org/10.1109/ISSPA.2012.6310573","url":null,"abstract":"The Probability Hypothesis Density (PHD) Filter is a recent solution to the multi-target filtering problem which consists in estimating an unknown number of targets and their states. The PHD filter equations are derived under the assumption that the dynamics of the targets and associated observations follow a Hidden Markov Chain (HMC) model. HMC models have been recently extended to Pairwise Markov Chains (PMC) models. In this paper, we focus on multi-target filtering when targets and associated measurements follow a PMC model, and we extend the classical PHD filter to such models. We also propose a Gaussian Mixture (GM) implementation of our PMC PHD filter for linear and Gaussian PMC. Our approach enables to extend multi-object filtering to more general tracking scenarios, and also enables to deduce an estimate of the measurement associated to each target.","PeriodicalId":248763,"journal":{"name":"2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114256751","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
On efficient decoding for the Fuzzy Vault scheme 模糊Vault方案的高效解码
2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310593
Hoi Ting Poon, A. Miri
{"title":"On efficient decoding for the Fuzzy Vault scheme","authors":"Hoi Ting Poon, A. Miri","doi":"10.1109/ISSPA.2012.6310593","DOIUrl":"https://doi.org/10.1109/ISSPA.2012.6310593","url":null,"abstract":"The Fuzzy Vault scheme was proposed as a means to improve the security of biometric technologies. However, the originally proposed Reed-Solomon (RS) decoding algorithm was not well understood and the CRC decoder, introduced as an alternative, remains the most popular in literature today. Despite its simplicity, CRC decoders contain significant flaws which motivate us to investigate the potential of RS decoders. In this paper, we discuss the role of RS codes in Fuzzy Vault and details a Berlekamp-Massey decoder as originally envisioned. However, due to the significant amount of erasures in a RS code word in Fuzzy Vault leading to poor decoder performance, we propose instead an alternate decoder based on the Euclidean algorithm, which considers the original approach to RS codes. Our results show that the RS decoder can achieve decoding speed significantly greater than any CRC decoders while maintaining information-theoretic security, which are independent of advances in computing power. We also propose an improvement to the CRC decoder as a means to evaluate the security of a Fuzzy Vault and found that many existing implementations using CRC decoding are vulnerable to brute-force attacks.","PeriodicalId":248763,"journal":{"name":"2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114289739","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: 9
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信