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1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185)最新文献

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Performance evaluation of different reversible decorrelating transforms in the JPEG-2000 baseline system JPEG-2000基线系统中不同可逆去相关变换的性能评价
1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185) Pub Date : 1998-06-05 DOI: 10.1109/ADFSP.1998.685687
M. Adams, F. Kossentini
{"title":"Performance evaluation of different reversible decorrelating transforms in the JPEG-2000 baseline system","authors":"M. Adams, F. Kossentini","doi":"10.1109/ADFSP.1998.685687","DOIUrl":"https://doi.org/10.1109/ADFSP.1998.685687","url":null,"abstract":"The performance of several reversible decorrelating transforms is evaluated in the JPEG-2000 baseline system. All of these transforms are based on tree-structured filter banks. Through the analysis of lossy and lossless compression results, a reversible version of the Cohen-Daubechies-Feauveau (2, 2) wavelet transform is found to perform best overall. A reversible version of a subband transform developed by Balasingham and Ramstad (see Proc. of 31st Asilomar Conference on Signals, Systems, and Computers, Monterey, CA, USA, 1997.) is also found to work particularly well for textured images.","PeriodicalId":424855,"journal":{"name":"1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127531596","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
Adaptive filters for multichannel signal processing 多通道信号处理的自适应滤波器
1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185) Pub Date : 1998-06-05 DOI: 10.1109/ADFSP.1998.685697
K. Plataniotis, A. Venetsanopoulos
{"title":"Adaptive filters for multichannel signal processing","authors":"K. Plataniotis, A. Venetsanopoulos","doi":"10.1109/ADFSP.1998.685697","DOIUrl":"https://doi.org/10.1109/ADFSP.1998.685697","url":null,"abstract":"The amount of research published to date indicates an increasing interest in the areas of multichannel signal processing. The availability of a wide set of multichannel information sources in application areas, such as color image processing, multispectral remote sensing imagery, biomedicine, robotics and industrial inspection have stimulated a renewed interest in developing efficient and cost effective processing techniques for multichannel signals. In this paper, fuzzy logic and adaptive learning techniques are utilized to derive new filter classes for multichannel signal processing. Using the proposed methodology, multichannel nonlinear problems are treated from a global viewpoint that readily yields and unifies previous, seemingly unrelated results. The fuzzy approach provides insight into the nature of the filtering process and the structure of the underlying nonlinear operator. The special case of color image processing is studied as an important example of multichannel signal processing. Simulation results indicate that the proposed adaptive fuzzy filters are computationally attractive and have excellent performance.","PeriodicalId":424855,"journal":{"name":"1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185)","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116526922","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
Geoacoustic model inversion with artificial neural networks 基于人工神经网络的地球声模型反演
1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185) Pub Date : 1998-06-05 DOI: 10.1109/ADFSP.1998.685708
J. Benson, N. Chapman, A. Antoniou
{"title":"Geoacoustic model inversion with artificial neural networks","authors":"J. Benson, N. Chapman, A. Antoniou","doi":"10.1109/ADFSP.1998.685708","DOIUrl":"https://doi.org/10.1109/ADFSP.1998.685708","url":null,"abstract":"An ocean parameter estimation methodology is presented which involves neural networks. Both multi-layered perceptron networks and radial basis function networks were trained to estimate ocean bottom parameters from a received acoustic signal. The network's design algorithms are presented and their relative merits discussed. The pre-processing of the data is described in detail. A comparison of the relative accuracies of the two networks for simulated data is presented. The inversion of actual data from the TRIAL SABLE experiment was performed and the parameter estimates are given.","PeriodicalId":424855,"journal":{"name":"1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117039288","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
Blind multiuser detection for frequency-selective fading CDMA channels 频率选择性衰落CDMA信道的盲多用户检测
1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185) Pub Date : 1998-06-05 DOI: 10.1109/ADFSP.1998.685704
X.F. Wang, W. Lu, A. Antoniou
{"title":"Blind multiuser detection for frequency-selective fading CDMA channels","authors":"X.F. Wang, W. Lu, A. Antoniou","doi":"10.1109/ADFSP.1998.685704","DOIUrl":"https://doi.org/10.1109/ADFSP.1998.685704","url":null,"abstract":"Linear multiuser detectors for frequency-selective fading CDMA channels are examined within the context of multidimensional adaptive filtering. A blind adaptive multiuser detector, which can suppress multiple-access interference and achieve multipath diversity gain simultaneously, is then proposed. A channel estimator (carrier recovery) for a coherent diversity combining is also presented. The only information required by the proposed detector is the signature and timing of the user of interest. It is shown that the proposed detector outperforms the decorrelating solution and is comparable to the minimum mean-squared-error solution even though the later two require more information.","PeriodicalId":424855,"journal":{"name":"1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130117930","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
Error spectrum shaping in three-dimensional recursive digital filters 三维递归数字滤波器误差谱整形
1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185) Pub Date : 1998-06-05 DOI: 10.1109/ADFSP.1998.685714
T. Hinamoto, A. Doi, T. Maeda
{"title":"Error spectrum shaping in three-dimensional recursive digital filters","authors":"T. Hinamoto, A. Doi, T. Maeda","doi":"10.1109/ADFSP.1998.685714","DOIUrl":"https://doi.org/10.1109/ADFSP.1998.685714","url":null,"abstract":"Error spectrum shaping is considered in 3-D recursive digital filters. A technique is developed for obtaining the optimal error feedback (EFB) coefficients that minimize the noise variance at the filter output. A detail discussion on the use of symmetry and antisymmetry of the EFB coefficients is also presented. The proposed technique relies on the use of the Lagrange's multiplier method. Moreover, the suboptimal EFB with integer coefficients is constructed by using a least-squares discrete-space optimization algorithm. Finally, a numerical example is given to illustrate the utility of the proposed technique.","PeriodicalId":424855,"journal":{"name":"1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185)","volume":"330 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134195316","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
A color segmentation scheme for object-based video coding 一种基于对象的视频编码颜色分割方案
1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185) Pub Date : 1998-06-05 DOI: 10.1109/ADFSP.1998.685688
N. Herodotou, K. Plataniotis, A. Venetsanopoulos
{"title":"A color segmentation scheme for object-based video coding","authors":"N. Herodotou, K. Plataniotis, A. Venetsanopoulos","doi":"10.1109/ADFSP.1998.685688","DOIUrl":"https://doi.org/10.1109/ADFSP.1998.685688","url":null,"abstract":"A color segmentation scheme is presented for use in an object-based video coding environment. The proposed technique employs the HSV (hue, saturation, value) color space to partition a video-phone type sequence into a facial area and a set of arbitrarily shaped regions. The facial region is identified by utilizing the a priori knowledge of the skin-tone distributions along with a series of fuzzy shape-based membership functions. The remaining regions are segmented using a recursive 1D histogram thresholding procedure. The technique is robust, computationally inexpensive, and allows for a higher coding efficiency. Furthermore, it may be used to support the content-based functionalities addressed in future object-based coders.","PeriodicalId":424855,"journal":{"name":"1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133181528","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: 51
A study of the performance gain obtained in image coding by using eventually contractive discrete fractal transformations 最终压缩离散分形变换在图像编码中性能增益的研究
1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185) Pub Date : 1998-06-05 DOI: 10.1109/ADFSP.1998.685685
J.F.L. de Oliveira, G. Mendonça, R.J. Dias
{"title":"A study of the performance gain obtained in image coding by using eventually contractive discrete fractal transformations","authors":"J.F.L. de Oliveira, G. Mendonça, R.J. Dias","doi":"10.1109/ADFSP.1998.685685","DOIUrl":"https://doi.org/10.1109/ADFSP.1998.685685","url":null,"abstract":"In the last few years, the discrete fractal transformation has been applied to image coding in order to obtain high compression rates. The coding scheme works by dividing an image into range blocks that are approximated, through a contractive fractal transformation, by lowpass filtered versions of the domain blocks selected in the image itself. It is reported by Fisher (1994) that using eventually contractive fractal transformations one can improve the compressed image quality. However, no explanation is given to justify this fact. We address this issue by relating this improvement to the filtering process of the domain blocks.","PeriodicalId":424855,"journal":{"name":"1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115193143","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
Adaptive non-linear modeling 自适应非线性建模
1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185) Pub Date : 1998-06-05 DOI: 10.1109/ADFSP.1998.685709
A. David, T. Aboulnasr
{"title":"Adaptive non-linear modeling","authors":"A. David, T. Aboulnasr","doi":"10.1109/ADFSP.1998.685709","DOIUrl":"https://doi.org/10.1109/ADFSP.1998.685709","url":null,"abstract":"To obtain an accurate model of a process the adaptation process should allow for an arbitrary accuracy within a given cost. Cost may be measured in terms of processing time or computing requirements. It is well known that to gain a better approximation of a process, the adaptation should be able to model a non-linearity at a desirable precision. Currently, methods that do so achieve their accuracy at a high computational cost. Furthermore, these methods do not guarantee i) optimal solution (neural networks), ii) convergence (extended Kalman filtering), or iii) manageable cost (Volterra systems). In this paper, we offer a simple yet powerful method, a switched filter bank, to this end.","PeriodicalId":424855,"journal":{"name":"1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115443656","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
An iterative procedure for matrix inversion in weighted least-square design of FIR filters 加权最小二乘FIR滤波器设计中矩阵反演的迭代方法
1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185) Pub Date : 1998-06-05 DOI: 10.1109/ADFSP.1998.685691
Weiping Zhu, M. Omair Ahmad, M.N.S. Szamy
{"title":"An iterative procedure for matrix inversion in weighted least-square design of FIR filters","authors":"Weiping Zhu, M. Omair Ahmad, M.N.S. Szamy","doi":"10.1109/ADFSP.1998.685691","DOIUrl":"https://doi.org/10.1109/ADFSP.1998.685691","url":null,"abstract":"It has been shown by some researchers that in a problem of weighted least-square (WLS) design of an FIR filter, most of the design computation pertains to the evaluation of the inverse of a matrix in order to solve a system of equations. A new iterative procedure is developed for the inversion of the matrices involved in the design. By expanding the inverse of a matrix as a convergent series, an updating formula for evaluating the inverse for each iteration is obtained, so that the proposed algorithm requires an inverse for only a few initial iterations but does not need any numerical operations for matrix inversion in succeeding iterations. It is also shown that the proposed iterative procedure is applicable for a wide range of weighting functions used for least-square designs.","PeriodicalId":424855,"journal":{"name":"1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129469665","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
Variable 1-D digital filter designs using vector-array decomposition 使用矢量阵列分解的可变一维数字滤波器设计
1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185) Pub Date : 1998-06-05 DOI: 10.1109/ADFSP.1998.685693
T. Deng
{"title":"Variable 1-D digital filter designs using vector-array decomposition","authors":"T. Deng","doi":"10.1109/ADFSP.1998.685693","DOIUrl":"https://doi.org/10.1109/ADFSP.1998.685693","url":null,"abstract":"When the given variable frequency response specifications are complicated, variable one-dimensional (1-D) digital filters are very difficult to design. This paper proposes a new approach for solving the problem. The basic idea of the new approach is not to design variable 1-D filters directly, but simplify the design problem to an easier one that merely requires constant 1-D filter designs and multi-dimensional (M-D) polynomial approximations based on the newly proposed vector-array decomposition (VAD).","PeriodicalId":424855,"journal":{"name":"1998 IEEE Symposium on Advances in Digital Filtering and Signal Processing. Symposium Proceedings (Cat. No.98EX185)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128016976","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
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