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ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359)最新文献

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Unequal error protection of images over Rayleigh fading channels 瑞利衰落信道上图像的不等误差保护
ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359) Pub Date : 1999-08-22 DOI: 10.1109/ISSPA.1999.818102
C. W. Yap, K. Ngan
{"title":"Unequal error protection of images over Rayleigh fading channels","authors":"C. W. Yap, K. Ngan","doi":"10.1109/ISSPA.1999.818102","DOIUrl":"https://doi.org/10.1109/ISSPA.1999.818102","url":null,"abstract":"This paper introduces a method of transmitting error resilient SPIHT coded images over highly error prone Rayleigh fading channels. Firstly, the source significance of the SPIHT coded output is obtained. Based upon the significance of the bits, the channel coding is varied accordingly. Channel coding consists of a mixture of rate compatible punctured convolutional (RCPC) codes and interleaving to combat the burst errors produced by the fading channel. An additional error concealment technique is also introduced into the SPIHT decoder to improve its results in cases where errors cause the corruption of the average luminance level during decoding. Comparison with using RS block codes at a total transmission rate of 1.0 bpp (bits/pixel) is carried out over fading channels with very high error rates to show the superiority of this method over methods using fixed rate burst error codes.","PeriodicalId":302569,"journal":{"name":"ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124405432","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
Adaptive volterra filtering using M-band wavelet transform 基于m波段小波变换的自适应伏特滤波
ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359) Pub Date : 1999-08-22 DOI: 10.1109/ISSPA.1999.815831
Byeong-Woo Kim, Yong-Min Lee, Sung-Kwon Park, S. Nam
{"title":"Adaptive volterra filtering using M-band wavelet transform","authors":"Byeong-Woo Kim, Yong-Min Lee, Sung-Kwon Park, S. Nam","doi":"10.1109/ISSPA.1999.815831","DOIUrl":"https://doi.org/10.1109/ISSPA.1999.815831","url":null,"abstract":"A new LMS adaptive Volterra filtering in the M-band wavelet transform domain is presented, where the input is pre-processed with MDWT (M-band discrete wavelet transform) being followed by power normalization. In particular, the pre-processing procedure leads to effective reduction of the eigenvalue spread of a Volterra input auto-correlation matrix, and thus improves the convergence rate of the adaptation process even in case of wide classes of input processes. To demonstrate the performance of the proposed approach, some simulation results are provided.","PeriodicalId":302569,"journal":{"name":"ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124577076","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
Adaptive control of a broadband array using frequency independent coefficients 基于频率无关系数的宽带阵列自适应控制
ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359) Pub Date : 1999-08-22 DOI: 10.1109/ISSPA.1999.815816
J. Marciano, H. Mehrpour, T. B. Vu
{"title":"Adaptive control of a broadband array using frequency independent coefficients","authors":"J. Marciano, H. Mehrpour, T. B. Vu","doi":"10.1109/ISSPA.1999.815816","DOIUrl":"https://doi.org/10.1109/ISSPA.1999.815816","url":null,"abstract":"Adaptive antenna arrays in broadband signal applications utilise tapped delay lines (TDL) in order to obtain the necessary frequency variation in the aperture distribution. This implies the adjustment of a total of N/spl middot/L parameters corresponding to L taps at each of the N antenna elements. This paper discusses the adaptive control of a broadband antenna array using a gradient search-type algorithm wherein only a single coefficient vector of size M+1 is adjusted, where M is the aperture size in half-wavelengths at a reference frequency f/sub u/. This is accomplished by utilising frequency-invariant (FI) beamformers, obtained specifically via a 2D-DFT-transformation. Simulations verify the effectiveness of this technique and the subsequent improvement in convergence speed in adaptive broadband nulling.","PeriodicalId":302569,"journal":{"name":"ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114460099","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
Robust batch algorithm for sequential blind extraction of noisy biomedical signals 生物医学噪声信号序列盲提取的鲁棒批处理算法
ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359) Pub Date : 1999-08-22 DOI: 10.1109/ISSPA.1999.818187
A. Cichocki, A. Barros
{"title":"Robust batch algorithm for sequential blind extraction of noisy biomedical signals","authors":"A. Cichocki, A. Barros","doi":"10.1109/ISSPA.1999.818187","DOIUrl":"https://doi.org/10.1109/ISSPA.1999.818187","url":null,"abstract":"In many applications, especially in biomedical signal processing (like EEG/MEG time series), source signals are noisy and some have kurtosis close to zero. Most known algorithms for blind signal extraction fail to separate all desired sources if the kurtosis is very low or equals zero. In this paper we propose a new simple second order statistic batch algorithm which is able to efficiently extract various temporally correlated sources even if they have very small or even zero kurtosis, for example colored Gaussian sources. Computer simulation examples illustrate validity and performance of the proposed approach for noisy biomedical signals.","PeriodicalId":302569,"journal":{"name":"ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359)","volume":"182 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116443068","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: 23
Features for high resolution radar range profile based ship classification 基于舰船分类的高分辨率雷达距离像的特点
ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359) Pub Date : 1999-08-22 DOI: 10.1109/ISSPA.1999.818179
S. Slomka, D. Gibbins, D. Gray, B. Haywood
{"title":"Features for high resolution radar range profile based ship classification","authors":"S. Slomka, D. Gibbins, D. Gray, B. Haywood","doi":"10.1109/ISSPA.1999.818179","DOIUrl":"https://doi.org/10.1109/ISSPA.1999.818179","url":null,"abstract":"This study investigates a variety of features in the context of automated ship classification of high resolution radar range profile. The features used are length, scatterer count, centres of mass, quantised range profile and Fourier modified direct Mellin transform coefficients. The results of evaluation using a modest database of high resolution range profiles, collected using an airborne radar, are then presented.","PeriodicalId":302569,"journal":{"name":"ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123570886","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: 21
Periodic behaviors in a digital filter with two's complement arithmetic 二补数字滤波器的周期特性
ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359) Pub Date : 1999-08-22 DOI: 10.1109/ISSPA.1999.818196
Xinghuo Yu
{"title":"Periodic behaviors in a digital filter with two's complement arithmetic","authors":"Xinghuo Yu","doi":"10.1109/ISSPA.1999.818196","DOIUrl":"https://doi.org/10.1109/ISSPA.1999.818196","url":null,"abstract":"It is well known that the second order digital filter with two's complement arithmetic may exhibit chaos for certain values of parameters. In this paper, we show that for a particular set of parameter values, the second order digital filter with two's complement arithmetic exhibits periodic behaviors. The relation between the period of the trajectories and the travelling pattern is explored. Simulation results are given to validate the analysis.","PeriodicalId":302569,"journal":{"name":"ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125062425","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: 30
Korean folk song retrieval using rhythm pattern classification 基于节奏模式分类的朝鲜族民歌检索
ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359) Pub Date : 1999-08-22 DOI: 10.1109/ISSPA.1999.818128
Chul Yong Yang, Jong Tak Shin, Jin Wook Kim, Hang-Joon Kim
{"title":"Korean folk song retrieval using rhythm pattern classification","authors":"Chul Yong Yang, Jong Tak Shin, Jin Wook Kim, Hang-Joon Kim","doi":"10.1109/ISSPA.1999.818128","DOIUrl":"https://doi.org/10.1109/ISSPA.1999.818128","url":null,"abstract":"In content based music retrieval, approximate string matching approaches are frequently used. Though string matching algorithms effectively deal with the input fault tolerance of user query, they require much time to search the entire database. In this paper, we propose a Korean folk song retrieval method which efficiently search the database. A user query is searched in two steps, a coarse classification using rhythm pattern and an interval comparison based on approximate string matching. The experimental results show that the proposed method efficiently improve the retrieval time.","PeriodicalId":302569,"journal":{"name":"ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129408765","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
Datagram protocols for arbitrary topology WLANS 任意拓扑wlan的数据报协议
ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359) Pub Date : 1999-08-22 DOI: 10.1109/ISSPA.1999.815767
G. Einicke, D. Dekker, A. R. Buckwell
{"title":"Datagram protocols for arbitrary topology WLANS","authors":"G. Einicke, D. Dekker, A. R. Buckwell","doi":"10.1109/ISSPA.1999.815767","DOIUrl":"https://doi.org/10.1109/ISSPA.1999.815767","url":null,"abstract":"A wireless local area network (WLAN) for emergency communications in underground coal mines is described. The network is required to survive outages and mine failures. Three candidate datagram protocols are and the results of simulation studies are presented which predict the network performance.","PeriodicalId":302569,"journal":{"name":"ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127307016","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
Extraction of stomach contour from X-ray image x射线图像胃轮廓的提取
ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359) Pub Date : 1999-08-22 DOI: 10.1109/ISSPA.1999.818189
F. Kobayashi, M. Ozaki, H. Tsuboi, Motoo Tanaka
{"title":"Extraction of stomach contour from X-ray image","authors":"F. Kobayashi, M. Ozaki, H. Tsuboi, Motoo Tanaka","doi":"10.1109/ISSPA.1999.818189","DOIUrl":"https://doi.org/10.1109/ISSPA.1999.818189","url":null,"abstract":"The stomach contour can be automatically and accurately extracted from the characteristics of X-ray images. The approximate stomach is obtained from the combination image which is constructed from a binary version of the original image and its differential image. The stomach contour is extracted using the brightness of the differential image and the shape of stomach approximation.","PeriodicalId":302569,"journal":{"name":"ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129999495","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
Speech compression by vector quantization of epochs 基于时间向量量化的语音压缩
ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359) Pub Date : 1999-08-22 DOI: 10.1109/ISSPA.1999.818220
Peter Veprek, A. B. Bradley
{"title":"Speech compression by vector quantization of epochs","authors":"Peter Veprek, A. B. Bradley","doi":"10.1109/ISSPA.1999.818220","DOIUrl":"https://doi.org/10.1109/ISSPA.1999.818220","url":null,"abstract":"A pitch epoch is a fundamental unit of voiced speech. This paper introduces a speech compression method based on vector quantization of epochs. Pitch determination, epoch marking, vector quantization procedure, and a technique for epoch extrapolation are described. The compression method is then evaluated and briefly compared to other waveform coders. The quality is objectively measured by the segmental signal-to-noise ratio and the results are tabulated. The (automatic) epoch vector quantization yields the following SNRseg: 10.03 dB at 12.0 kbps, 11.35 dB at 21.3 kbps, 13.31 dB at 39.7 kbps, 18.32 dB at 76.4 kbps, and 62.69 dB at 112.9 kbps.","PeriodicalId":302569,"journal":{"name":"ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128912580","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
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