发布求助
文献互助 智能选刊 最新文献

Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.最新文献

筛选
英文 中文
Edge detection using on partial differential equation and anisotropic diffusion 基于偏微分方程和各向异性扩散的边缘检测
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224763
Samir Belfkih, P. Montesinos, Régis Beuscart
{"title":"Edge detection using on partial differential equation and anisotropic diffusion","authors":"Samir Belfkih, P. Montesinos, Régis Beuscart","doi":"10.1109/ISSPA.2003.1224763","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224763","url":null,"abstract":"In this paper we propose a new edge detection operator using partial differential equation (PDE) for grey level and color images. We propose a new approach in order to obtain a new anisotropic edge detection method based on the crossing of the second derivative. We show here that edges can be robustly extracted without lost of precision. We present various results on synthetic and real images.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130459912","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 implementation and analysis of programmable Doppler filter bank using ADSP21060S ADSP21060S可编程多普勒滤波器组的实现与分析
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224707
Hyun-Ik Shin, Young-Jin Ryoo, Jong-Pil Lee, Jung-Wook Son, Whan-woo Kim
{"title":"An implementation and analysis of programmable Doppler filter bank using ADSP21060S","authors":"Hyun-Ik Shin, Young-Jin Ryoo, Jong-Pil Lee, Jung-Wook Son, Whan-woo Kim","doi":"10.1109/ISSPA.2003.1224707","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224707","url":null,"abstract":"Doppler filter bank (DFB) is the heart of pulsed Doppler radars. It provides the residue clutter elimination and coherent integration. With the improvement of digital signal processors (DSPs), the implementation using them is becoming more common. Generally, for the DFB to process the input data in real time, the parallel processing concept using multiple DSPs is used. This paper presents the implementation of a programmable DFB using ADSP21060s. By analyzing the transfer rate of the data received during coherent processing interval (CPI) and formulating the time required to compute the algorithm, the total processing time and the number of ADSP21060s to implement the DFB are estimated.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"28 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131319739","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
Efficient processing of binary shape masks in the compressed domain using generalized finite transducers 基于广义有限换能器的压缩域二进制形状掩模的有效处理
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224963
Mohamed Abdel-Maguid, M. Moniri
{"title":"Efficient processing of binary shape masks in the compressed domain using generalized finite transducers","authors":"Mohamed Abdel-Maguid, M. Moniri","doi":"10.1109/ISSPA.2003.1224963","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224963","url":null,"abstract":"In this paper we describe a new algorithm for binary shape masks processing in the compressed domain using generalised finite transducers [GFT] based on permutation set mapping. The proposed algorithm outperforms the existing algorithms in both compression efficiency and complexity. Moreover, the processed visual data maintain the original visual perceptual quality. Experimental results are presented to show the gain in compression efficiency.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128767935","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
Channel shortened chip-level MMSE equalization for CDMA downlink 用于CDMA下行链路的信道缩短芯片级MMSE均衡
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224881
Yi Zhang, J. Gu, Dacheng Yang
{"title":"Channel shortened chip-level MMSE equalization for CDMA downlink","authors":"Yi Zhang, J. Gu, Dacheng Yang","doi":"10.1109/ISSPA.2003.1224881","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224881","url":null,"abstract":"Previous work has shown that MMSE (minimum mean square error) equalizer has better performance than RAKE receiver and ZF (zero forcing) equalizer in high data rate systems. However, MMSE equalizer has a much higher complexity than RAKE receiver, especially when fading channel is sparse in high chip rate cases and the length of the channel becomes very long, which prohibits its applications. Our purpose of the paper is to reduce the length of the channel efficiently and thus to reduce the computation complexity of MMSE equalizer. A new algorithm for the optimal shortening of channel impulse response for MMSE equalizers is proposed. This algorithm, which uses eigenvalues and eigenvectors to generate the globally optimal coefficients of shortening impulse response filter (SIRF), has a lower complexity than the previous ones.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125498324","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
Discrete wavelet transform based seizure detection in newborns EEG signals 基于离散小波变换的新生儿脑电图信号癫痫检测
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224913
Pega Zarjam, M. Mesbah
{"title":"Discrete wavelet transform based seizure detection in newborns EEG signals","authors":"Pega Zarjam, M. Mesbah","doi":"10.1109/ISSPA.2003.1224913","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224913","url":null,"abstract":"This paper proposes a novel method for detecting newborns seizure events from electroencephalogram (EEG) data. The detection scheme is based on the discrete wavelet transform (DWT) of the EEG signals. The number of zero-crossings, the average distance between adjacent zero-crossings, the number of extrema, and the average distance between adjacent extrema of the wavelet coefficients (WCs) of certain scales are extracted to form a feature set. The extracted feature set is then fed to an artificial neural network (ANN) classifier to organize the EEG signals into seizure and non- seizure activities. In this study, the training and test sets were obtained from EEG data acquired from 1 and 5 other neonates, respectively, with ages ranging from 2 days to 2 weeks. The obtained results show that on the average 95% of the EEG seizures were detected by the proposed scheme.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126900611","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: 8
A reliable method for blind channel identification using burst data 一种利用突发数据进行盲信道识别的可靠方法
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224792
D. Raphaeli, Udi Suissa
{"title":"A reliable method for blind channel identification using burst data","authors":"D. Raphaeli, Udi Suissa","doi":"10.1109/ISSPA.2003.1224792","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224792","url":null,"abstract":"In this paper we present a new approach for blind identification of single input single output (SISO) and multiple inputs single output (MISO) FIR channels with nonminimum phase. The approach is based on minimizing a cost function built of the problem unknown parameters and a vector of measurements achieved by passing the received data through a known parallel set of FIR filters followed by samples averaging. Averaging is done according to certain functions that have higher order statistics (HOS) content and that their asymptotical mean can be expressed in closed form. The main advantages of this approach are its high probability of identification success when considering statistical channels, its ability to obtain reliable channel estimates in low SNR using short records of samples and its unsensitivity to overestimation of the channel order.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126452521","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
Quality evaluation of MPEG-4 and H.26L coded video for mobile multimedia communications 移动多媒体通信中MPEG-4和H.26L编码视频的质量评价
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224742
E. Ong, Weisi Lin, Zhongkang Lu, Xiaokang Yang, S. Yao, Xiao Lin, F. Moschetti
{"title":"Quality evaluation of MPEG-4 and H.26L coded video for mobile multimedia communications","authors":"E. Ong, Weisi Lin, Zhongkang Lu, Xiaokang Yang, S. Yao, Xiao Lin, F. Moschetti","doi":"10.1109/ISSPA.2003.1224742","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224742","url":null,"abstract":"This paper proposes a new approach for computing perceptual distortion for visual signal in order to provide an objective measure for perceptual quality at low bit rate MPEG-4 and H.26L coding in typically mobile multimedia communications. The regions with three major perceptually disturbing artefacts, namely, damaged edge, blockiness and ringing, are detected as the basis of assessment. The correlation of the metric with human perception has been demonstrated with low bit rate (24/spl sim/384 Kbps) CIF and QCIF test data.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126276888","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
A modified constant modulus algorithm (CMA) for joint blind and carrier recovery in two-dimensional digital communication systems 一种用于二维数字通信系统联合盲与载波恢复的改进常模算法
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224939
Kun-Da Tsai, Jenq-Tay Yuan
{"title":"A modified constant modulus algorithm (CMA) for joint blind and carrier recovery in two-dimensional digital communication systems","authors":"Kun-Da Tsai, Jenq-Tay Yuan","doi":"10.1109/ISSPA.2003.1224939","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224939","url":null,"abstract":"The conventional constant modulus algorithm (CMA) requires a separate carrier recovery system (for example, a phase-locked loop) for phase recovery. This paper analyzes a modified CMA (MCMA) for blind equalization in QAM communication systems. The results indicate that the MCMA alone may be able to remove inter-symbol interference (ISI) and simultaneously correct the phase error because it implicitly incorporates a phase-tracking loop, which automatically recovers carrier phase. Consequently, it may outperform the conventional CMA in terms of convergence speed and residual ISI while both algorithms require an almost identical computational cost.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"241 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114198739","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
Optimizing multiantenna systems with partial channel knowledge 利用部分信道知识优化多天线系统
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224679
A. L. Moustakas, S. Simon
{"title":"Optimizing multiantenna systems with partial channel knowledge","authors":"A. L. Moustakas, S. Simon","doi":"10.1109/ISSPA.2003.1224679","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224679","url":null,"abstract":"In this paper we consider a narrowband point-to-point communication system with multiple transmitters with the receiver having perfect channel knowledge and the transmitter having only limited channel information. We focus on two canonical classes of channel models: (a) the channel has zero mean with an arbitrary covariance matrix and (b) the channel has nonzero mean with covariance matrix proportional to unity. In both cases we present simple analytic expressions for the ergodic average and the cumulative distribution function of the mutual information for arbitrary input (transmission) signal covariance. With minimal numerical effort, we then determine the ergodic and outage capacities and the input signal covariances which achieve these maximal capacities. We thus show how a transmitter with partial channel knowledge (either knowing the mean channel or the signal covariance) should correlate its transmissions to maximize throughput.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"36 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120978906","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: 7
Image quality and noise evaluation 图像质量和噪声评价
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224740
Y. Chang, O. M. Rijal, N. Noor
{"title":"Image quality and noise evaluation","authors":"Y. Chang, O. M. Rijal, N. Noor","doi":"10.1109/ISSPA.2003.1224740","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224740","url":null,"abstract":"The definition of a 'good image' is subjective and depends on the requirements of a given application Gonzalez, R. C., Woods, R. E. (1992). For example, image quality is highly connected to the process of image sampling and data compression. Noise can be generated and added in during both processes, plus it can also be generated if further processing is imposed on the image such as brightness enhancement or contrast stretch. The common practice is to evaluate the quality of the image visually. This is a subjective process since noise cannot be measured accurately Parker, J. R. (1997). In this paper, we propose using the coefficient of determination for the unreplicated linear functional relationship (ULFR) model, namely R/sup 2//sub F/ as a measure of the similarity between two images which in turn may be used as a definition for image quality Dolby G. R. (1976), Fuller, W. A. (1987). The derivation of R/sup 2//sub F/ is briefly reviewed. This study shows that the proposed similarity measure performs better than particular similarity measures Dietrich et al. (2002).","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115221763","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: 10
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