发布求助
文献互助 智能选刊 最新文献

6th International Conference on Signal Processing, 2002.最新文献

筛选
英文 中文
Non-stationary signal parametric modeling techniques with an application to low bit rate audio coding 非平稳信号参数化建模技术及其在低比特率音频编码中的应用
6th International Conference on Signal Processing, 2002. Pub Date : 2002-08-26 DOI: 10.1109/ICOSP.2002.1181082
R. Boyer, S. Essid, N. Moreau
{"title":"Non-stationary signal parametric modeling techniques with an application to low bit rate audio coding","authors":"R. Boyer, S. Essid, N. Moreau","doi":"10.1109/ICOSP.2002.1181082","DOIUrl":"https://doi.org/10.1109/ICOSP.2002.1181082","url":null,"abstract":"Low bit rate audio coding often relies on Fourier representation despite its limitations for transient signal modeling. This study proposes alternative decompositions and expansion strategies that lead to more accurate modeling. Two classes of methods are considered, subspace decomposition methods, and atomic decomposition methods and their performances are compiled to propose an audio modeling scheme amenable to low bit rate coding.","PeriodicalId":159807,"journal":{"name":"6th International Conference on Signal Processing, 2002.","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121391522","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: 12
A novel method of contour extraction based on dynamic programming 一种基于动态规划的轮廓提取新方法
6th International Conference on Signal Processing, 2002. Pub Date : 2002-08-26 DOI: 10.1109/ICOSP.2002.1181181
Yu Ting, Luo Yupin
{"title":"A novel method of contour extraction based on dynamic programming","authors":"Yu Ting, Luo Yupin","doi":"10.1109/ICOSP.2002.1181181","DOIUrl":"https://doi.org/10.1109/ICOSP.2002.1181181","url":null,"abstract":"Geometric contour, as an important object feature, has been used for shape matching and object recognition. E.N. Mortensen and W.A. Barrett (Proc. SIGGRAPH 95 Conf., p.191-8, 1995) proposed a method for contour extraction. Based on Dijkstra's 2D dynamic programming, the method has a number of advantages over previous approaches. However, the drawbacks of this method are its interactive requirement during the optimal search and high computational complexity. We propose a new optimal search strategy to avoid the interactive requirement by allowing variations of the control points and integrating a multi-resolution framework to reduce computational complexity. Experiments show the effectiveness of our proposed approach.","PeriodicalId":159807,"journal":{"name":"6th International Conference on Signal Processing, 2002.","volume":"539 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116247874","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
Generalized kernel function Fisher discriminant for pattern recognition 模式识别的广义核函数Fisher判别法
6th International Conference on Signal Processing, 2002. Pub Date : 2002-08-26 DOI: 10.1109/ICOSP.2002.1179975
Gan Junying, Zhang Youwei
{"title":"Generalized kernel function Fisher discriminant for pattern recognition","authors":"Gan Junying, Zhang Youwei","doi":"10.1109/ICOSP.2002.1179975","DOIUrl":"https://doi.org/10.1109/ICOSP.2002.1179975","url":null,"abstract":"In this paper, according to the concept of generalized Fisher (1938) discriminant (GFD) presented by Foley and Sammon (1975) , the generalized kernel function Fisher discriminant (GKFD) is investigated and proved based on the linear Fisher discriminant (LFD) and kernel function Fisher discriminant (KFD). It generalizes the solution of two-class pattern recognition nonlinearly, and the decision function is obtained. In the process of decision, the competition principle is used, each test sample is determined as the class with the largest decision function value, and a valid approach is provided for multi-class pattern recognition. The GKFD has the characteristic of solid theory foundation and strong generalization capability, which embraces important meanings and application merits in multi-class pattern recognition.","PeriodicalId":159807,"journal":{"name":"6th International Conference on Signal Processing, 2002.","volume":"15 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113969845","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: 5
Orthogonal digital waveform set design for multiaccess communications systems 多址通信系统正交数字波形集设计
6th International Conference on Signal Processing, 2002. Pub Date : 2002-08-26 DOI: 10.1109/ICOSP.2002.1180049
Z. Zang, S. Nordholm
{"title":"Orthogonal digital waveform set design for multiaccess communications systems","authors":"Z. Zang, S. Nordholm","doi":"10.1109/ICOSP.2002.1180049","DOIUrl":"https://doi.org/10.1109/ICOSP.2002.1180049","url":null,"abstract":"This paper proposes a new approach for the design of a set of digital filters which can be used as message-carrying waveforms in multicarrier communication systems. The filter set design problem is formulated as a constrained nonconvex optimization problem. For bandwidth efficiency, all the digital filters in the set are constrained to have approximately the same desired spectral shapes in a prescribed passband; To minimize intersymbol interference and co-channel interference, all the digital filters in the set are constrained to have low values of cross-correlation at all lags and low values of auto-correlation at nonzero lags. Methods for solving the proposed nonconvex optimization problem are outlined. Numerical results are presented to illustrate the usefulness of the proposed approach.","PeriodicalId":159807,"journal":{"name":"6th International Conference on Signal Processing, 2002.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124351235","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
Inverse QR iterative algorithm for space-time adaptive processing 时空自适应处理的逆QR迭代算法
6th International Conference on Signal Processing, 2002. Pub Date : 2002-08-26 DOI: 10.1109/ICOSP.2002.1180061
C. Jianwen, Ni Jin-lin, W. Yongliang
{"title":"Inverse QR iterative algorithm for space-time adaptive processing","authors":"C. Jianwen, Ni Jin-lin, W. Yongliang","doi":"10.1109/ICOSP.2002.1180061","DOIUrl":"https://doi.org/10.1109/ICOSP.2002.1180061","url":null,"abstract":"An inverse QR iterative algorithm is derived for calculating practical adaptive weights based on the space-time multiple-beam (STMB) approach. It is suitable for improving the detection performance of the STMB approach in all interesting ranges. Simulation results indicate that the inverse QR iterative algorithm can improve the performance of the STMB approach in all ranges for nonhomogeneous clutter environments, and hence it is suitable for practical airborne phased array radar applications.","PeriodicalId":159807,"journal":{"name":"6th International Conference on Signal Processing, 2002.","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124222506","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 parametric 4-4-tap wavelet and the interval of convergence 参数化4-4抽头小波及其收敛区间
6th International Conference on Signal Processing, 2002. Pub Date : 2002-08-26 DOI: 10.1109/ICOSP.2002.1181026
Guo Han-wei, W. Yan, Chen Lizhi, L. Diannong
{"title":"A parametric 4-4-tap wavelet and the interval of convergence","authors":"Guo Han-wei, W. Yan, Chen Lizhi, L. Diannong","doi":"10.1109/ICOSP.2002.1181026","DOIUrl":"https://doi.org/10.1109/ICOSP.2002.1181026","url":null,"abstract":"The method of construction of a parametric 4-4-tap minor filter is discussed, the condition for the filter to converge to wavelet is given, together with the convergence interval of the parametric 4-4 tap filters.","PeriodicalId":159807,"journal":{"name":"6th International Conference on Signal Processing, 2002.","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124226628","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 wavelet intra-frame coding algorithm based on information source partition theorem 基于信息源划分定理的小波帧内编码算法
6th International Conference on Signal Processing, 2002. Pub Date : 2002-08-26 DOI: 10.1109/ICOSP.2002.1181182
Liu Jianqiu, Ruanqiuqi
{"title":"A wavelet intra-frame coding algorithm based on information source partition theorem","authors":"Liu Jianqiu, Ruanqiuqi","doi":"10.1109/ICOSP.2002.1181182","DOIUrl":"https://doi.org/10.1109/ICOSP.2002.1181182","url":null,"abstract":"We propose a new wavelet intra-frame coding algorithm based on the information source partition theorem. The algorithm is motivated by the SPIHT (set partitioning in hierarchical trees) algorithm, but it is more efficient than the SPIHT codec and can also produce a completely embedded coding bit stream. Experimental results show that our algorithm is very suitable for very low bit-rate video coding. Compared with the H.263 intra-frame coding algorithm, our codec achieves a better reconstructed image than the H.263 intra-frame codec at the same compression ratio.","PeriodicalId":159807,"journal":{"name":"6th International Conference on Signal Processing, 2002.","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125250616","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
Boundary filter design for biorthogonal filter banks 双正交滤波器组的边界滤波器设计
6th International Conference on Signal Processing, 2002. Pub Date : 2002-08-26 DOI: 10.1109/ICOSP.2002.1180979
D. Zelazo
{"title":"Boundary filter design for biorthogonal filter banks","authors":"D. Zelazo","doi":"10.1109/ICOSP.2002.1180979","DOIUrl":"https://doi.org/10.1109/ICOSP.2002.1180979","url":null,"abstract":"In order for filter banks to be able to process finite length input signals, appropriate modifications must be made to either the input signal (via signal extension techniques) or to the filter bank itself (boundary filters). This paper shows how to choose appropriate boundary filters for the analysis portion of any filter bank. The boundary filters can be chosen to satisfy any number of criteria, such as frequency selectivity or number of vanishing moments, and are only required to be linearly independent of the original filter bank filters. The synthesis filter bank is found by calculating the dual of the analysis bank, which is the same as finding the inverse. This results in a biorthogonal, perfect reconstruction filter bank.","PeriodicalId":159807,"journal":{"name":"6th International Conference on Signal Processing, 2002.","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121738046","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
Histograms method: a new concept of DOA finding 直方图法:DOA查找的新概念
6th International Conference on Signal Processing, 2002. Pub Date : 2002-08-26 DOI: 10.1109/ICOSP.2002.1181065
M. Christele, F. Marc, M. Dominique
{"title":"Histograms method: a new concept of DOA finding","authors":"M. Christele, F. Marc, M. Dominique","doi":"10.1109/ICOSP.2002.1181065","DOIUrl":"https://doi.org/10.1109/ICOSP.2002.1181065","url":null,"abstract":"In telecommunication, radar, and underwater acoustic fields, a wide range of emerging applications encounter non-Gaussian signals. A novel method of target detection and direction finding, based upon source histogram analysis, is therefore proposed. It provides an increased number of localized sources for phased arrays with a limited number of antennas. Working on the geometrical properties of the joint probability density functions of the sources, it requires a low cost implementation, and is available for both linear and 2D arrays. First results obtained on synthetic signals are presented; they validate the theoretical results in terms of detection/counting.","PeriodicalId":159807,"journal":{"name":"6th International Conference on Signal Processing, 2002.","volume":"283 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134093348","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
Shot detection based on dominant region tracking 基于优势区域跟踪的镜头检测
6th International Conference on Signal Processing, 2002. Pub Date : 2002-08-26 DOI: 10.1109/ICOSP.2002.1181132
Tianming Liu, F. Qi
{"title":"Shot detection based on dominant region tracking","authors":"Tianming Liu, F. Qi","doi":"10.1109/ICOSP.2002.1181132","DOIUrl":"https://doi.org/10.1109/ICOSP.2002.1181132","url":null,"abstract":"The paper presents a novel video shot detection method based on dominant region tracking. The basic idea is that a shot boundary decision is made when tracked dominant regions are lost and/or new dominant regions occur. The tracking is based on region mapping between consecutive frames and performed on the MPEG DC sequence, which greatly accelerates the process. The dominant regions are obtained using a fast static image segmentation method. As a whole, the shot detection algorithm is effective and very fast.","PeriodicalId":159807,"journal":{"name":"6th International Conference on Signal Processing, 2002.","volume":"197 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134281379","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
首页 上一页 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