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2008 IEEE International Symposium on Signal Processing and Information Technology最新文献

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Comparison of Interleaved Polling with adaptive Cycle Time and Cyclic Demand Proportionality Algorithms 自适应周期时间和周期需求比例算法的交错轮询比较
2008 IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2008-12-01 DOI: 10.1109/ISSPIT.2008.4775646
S. Krijestorac, J. Bagby
{"title":"Comparison of Interleaved Polling with adaptive Cycle Time and Cyclic Demand Proportionality Algorithms","authors":"S. Krijestorac, J. Bagby","doi":"10.1109/ISSPIT.2008.4775646","DOIUrl":"https://doi.org/10.1109/ISSPIT.2008.4775646","url":null,"abstract":"Ethernet passive optical network (EPON) is an access network that delivers essential services of voice, video, and data communications reliably, while at the same time providing expected guarantees of the delivery of those services in terms of defined quality of service measures (QOS). This paper compares performance criteria such as delay, queue size, and packet loss ratio for two dynamic bandwidth allocation (DBA) algorithms: interleaved polling with adaptive cycle time (IPACT), and a new cyclic demand proportionality algorithm (CDP). CDP gives the best performances in terms delay vs. offered load, queue size vs. offered load and packet loss ratio vs. offered load compared to IPACT with the Fixed Allocation Window size for transmission. Improvement is seen for these three parameters when CDP is compared with IPACT with limited allocation window size. A traffic generator that gives traffic with self-similar and long range dependency properties is used in the simulations.","PeriodicalId":213756,"journal":{"name":"2008 IEEE International Symposium on Signal Processing and Information Technology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133253576","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
An Improved Method for Tracking a Single Target in Variable Cluttered Environments 一种改进的变杂环境下单目标跟踪方法
2008 IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2008-12-01 DOI: 10.1109/ISSPIT.2008.4775702
Fatemeh Rahemi, A. Sedigh, Alireza Fatehi, F. Razzazi
{"title":"An Improved Method for Tracking a Single Target in Variable Cluttered Environments","authors":"Fatemeh Rahemi, A. Sedigh, Alireza Fatehi, F. Razzazi","doi":"10.1109/ISSPIT.2008.4775702","DOIUrl":"https://doi.org/10.1109/ISSPIT.2008.4775702","url":null,"abstract":"Tracking moving objects in variable cluttered environments is an active area of research. It is common to use some simplifying assumption in such environments to facilitate the design. In this paper a new method for simulating the completely non-Gaussian cluttered environments is presented. The method is based on using the variable variance of process noise as a description of variability in such environments. The key objective is to find an effective algorithm for tracking a single moving object in variable cluttered environments, with utilization of the presented method. The new methodology is presented in two steps. In the first step we compare the accuracy of estimators in tracking a moving object, and in the second step, the goal is to find the best algorithm for tracking a single moving target in variable cluttered environments.","PeriodicalId":213756,"journal":{"name":"2008 IEEE International Symposium on Signal Processing and Information Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129138070","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
An Iterative Mitchell's Algorithm Based Multiplier 基于迭代Mitchell算法的乘法器
2008 IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2008-12-01 DOI: 10.1109/ISSPIT.2008.4775704
Z. Babic, A. Avramović, P. Bulić
{"title":"An Iterative Mitchell's Algorithm Based Multiplier","authors":"Z. Babic, A. Avramović, P. Bulić","doi":"10.1109/ISSPIT.2008.4775704","DOIUrl":"https://doi.org/10.1109/ISSPIT.2008.4775704","url":null,"abstract":"This paper presents a new multiplier with possibility to achieve an arbitrary accuracy. The multiplier is based upon the same idea of numbers representation as Mitchell's algorithm, but does not use logarithm approximation. The proposed iterative algorithm is simple and efficient, achieving an error percentage as small as required, until the exact result. Hardware solution involves adders and shifters, so it is not gate and power consuming. Parallel circuits are used for error correction. The error summary for operands ranging from 8-bits to 16-bits operands indicates very low error percentage with only two parallel correction circuits.","PeriodicalId":213756,"journal":{"name":"2008 IEEE International Symposium on Signal Processing and Information Technology","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126729364","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: 11
Precise Voicing Information Extraction in Speech Signals Using the Analytic Signal 基于解析信号的语音信号信息精确提取
2008 IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2008-12-01 DOI: 10.1109/ISSPIT.2008.4775673
S. Rossignol, O. Pietquin
{"title":"Precise Voicing Information Extraction in Speech Signals Using the Analytic Signal","authors":"S. Rossignol, O. Pietquin","doi":"10.1109/ISSPIT.2008.4775673","DOIUrl":"https://doi.org/10.1109/ISSPIT.2008.4775673","url":null,"abstract":"This paper proposes a voiced - unvoiced measure based on the Analytic Signal computation. This voiced - unvoiced feature can be useful for many speech processing applications. For instance, considering speech recognition, it could be incorporated into commonly used acoustic feature vectors, such as for example the Mel Frequency Cepstral Coefficients (MFCC) and their first two derivatives, in order to improve the performance of the overall system. The evaluation of the developed measure has been performed on the TIMIT database. TIMIT has been manually segmented into phones. The voicing information can easily be derived from this segmentation. It is shown in this paper that the automatic voiced - unvoiced segmentation obtained using the method described in the next sections and the manual voiced - unvoiced segmentation provided by TIMIT are very similar.","PeriodicalId":213756,"journal":{"name":"2008 IEEE International Symposium on Signal Processing and Information Technology","volume":"379 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123388083","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
Maximizing the Zero-Error Density for RTRL 最大化RTRL的零误差密度
2008 IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2008-12-01 DOI: 10.1109/ISSPIT.2008.4775679
L. Alexandre
{"title":"Maximizing the Zero-Error Density for RTRL","authors":"L. Alexandre","doi":"10.1109/ISSPIT.2008.4775679","DOIUrl":"https://doi.org/10.1109/ISSPIT.2008.4775679","url":null,"abstract":"A new learning principle was introduced recently called the Zero-Error Density Maximization (Z-EDM) and was proposed in the framework of MLP backpropagation. In this paper we present the adaptation of this principle to online learning in recurrent neural networks, more precisely, to the Real Time Recurrent Learning (RTRL) approach. We show how to modify the RTRL learning algorithm in order to make it learn using Z-EDM criteria by using a sliding time window of previous error values. We present experiments showing that this new approach improves the convergence rate of the RNNs and improves the prediction performance in time series forecast.","PeriodicalId":213756,"journal":{"name":"2008 IEEE International Symposium on Signal Processing and Information Technology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121859993","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
Tracking Dynamical Transition of Epileptic EEG Using Particle Filter 基于粒子滤波的癫痫脑电动态转移跟踪
2008 IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2008-12-01 DOI: 10.1109/ISSPIT.2008.4775727
Hossein Mamaghanian, M. Shamsollahi, S. Hajipour
{"title":"Tracking Dynamical Transition of Epileptic EEG Using Particle Filter","authors":"Hossein Mamaghanian, M. Shamsollahi, S. Hajipour","doi":"10.1109/ISSPIT.2008.4775727","DOIUrl":"https://doi.org/10.1109/ISSPIT.2008.4775727","url":null,"abstract":"In this work we used the Liley EEG model as a dynamical model of EEG. Two parameters of the model which are candidates for change during an epileptic seizure are defined as new states in state space representation of this dynamical model. Then SIS particle filter is applied for estimating the defined states over time using the recorded epileptic EEG as the observation of the system. A method for fast numerical solution of the nonlinear coupled equation of the model is proposed. This model is used for tracking the dynamical properties of brain during epileptic seizure. Tracking the changes of these new defined states of the model have good information about the state transition of the model (interictal/preictal/ictal) and can be used in online monitoring algorithms for predicting seizures in epilepsy.","PeriodicalId":213756,"journal":{"name":"2008 IEEE International Symposium on Signal Processing and Information Technology","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132798924","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 Particle Swarm Optimization-Based Approach to Speaker Segmentation Based on Independent Component Analysis on GSM Digital Speech 基于粒子群优化的GSM数字语音独立分量分割方法
2008 IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2008-12-01 DOI: 10.1109/ISSPIT.2008.4775731
S. M. Mirrezaie, K. Faez, Amir Asnaashari, Ali Ziaei
{"title":"A Particle Swarm Optimization-Based Approach to Speaker Segmentation Based on Independent Component Analysis on GSM Digital Speech","authors":"S. M. Mirrezaie, K. Faez, Amir Asnaashari, Ali Ziaei","doi":"10.1109/ISSPIT.2008.4775731","DOIUrl":"https://doi.org/10.1109/ISSPIT.2008.4775731","url":null,"abstract":"Adaptive Multi-Rate (AMR) codec was standardized for GSM in 1999. AMR offers substantial improvement over previous GSM speech codecs in error robustness by adapting speech and channel coding depending on channel conditions. The Adaptive Multi-Rate speech codec is adopted as a standard for IMT-2000 by ETSI and 3GPP and consists of eight source codecs with bit rates from 4.75 to 12.2 kbit/s. In this paper, we present an approach comprising of particle swarm optimization (PSO), which encodes possible segmentations of an audio record, and measures mutual information between these segments and the audio data. This measure is used as the fitness function for the PSO. A compact encoding of the solution for PSO which decreases the length of the PSO individuals and enhances the PSO convergence properties is adopted. The algorithm has been tested on two actual sets of data with AMR format for speaker segmentation, obtaining very good results in all test problems. The results have been compared to the widely used a genetic algorithm-based in several practical situations. No assumptions have been made about prior knowledge of speech signal characteristics. However, we assume that the speakers do not speak simultaneously and that we have no real-time constraints.","PeriodicalId":213756,"journal":{"name":"2008 IEEE International Symposium on Signal Processing and Information Technology","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132931892","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
An Implementation of the Blowfish Cryptosystem 河豚密码系统的实现
2008 IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2008-12-01 DOI: 10.1109/ISSPIT.2008.4775664
R. Meyers, A. Desoky
{"title":"An Implementation of the Blowfish Cryptosystem","authors":"R. Meyers, A. Desoky","doi":"10.1109/ISSPIT.2008.4775664","DOIUrl":"https://doi.org/10.1109/ISSPIT.2008.4775664","url":null,"abstract":"The Blowfish cryptosystem is a very fast and useful scheme, even though it was introduced over a decade ago. This cryptosystem consists of two parts, a subkey and S-box generation phase, and an encrypiton phase. A short introduction to both algorithms are given, along with a few notes about the Ciphertext Block Chaining (CBC) mode. Some general information about attacks are explained, along with information about some of the people who have worked to analyze and attempt to break Blowfish. An implementation of a Windows tool for encrypting files which uses Blowfish is also examined in this paper. The results of the encryption tool clearly demonstrate how fast the encryption is compared to the subkey and S-box generation. The secrecy of the cryptosystem is explained by using several test files of different types, as well as a study of the security with respect to the number of rounds. Finally, some possible extensions to the software tool to improve its usefulness based on the strength of Blowfish are given.","PeriodicalId":213756,"journal":{"name":"2008 IEEE International Symposium on Signal Processing and Information Technology","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114282274","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: 31
Glottal Area Segmentation without Initialization using Gabor Filters 没有初始化的使用Gabor滤波器的声门区域分割
2008 IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2008-12-01 DOI: 10.1109/ISSPIT.2008.4775678
A. Méndez, B. García, I. Ruiz, I. Iturricha
{"title":"Glottal Area Segmentation without Initialization using Gabor Filters","authors":"A. Méndez, B. García, I. Ruiz, I. Iturricha","doi":"10.1109/ISSPIT.2008.4775678","DOIUrl":"https://doi.org/10.1109/ISSPIT.2008.4775678","url":null,"abstract":"This paper describes a method to automatically obtain the glottal space segmentation without user initialization from healthy and pathological vocal folds video sequences captured by the laryngoscope. The segmentation is mainly based on a Gabor filter bank, studying the texture differences inside vocal folds images, and combining it with others advanced image processing techniques to achieve the expected results. The authors want to emphasize that the proposed algorithm is independent of images' resolution and zoom, but the quality of them depends on specialist experience with the instrumentation. Our proposal has worked correctly in all database test videos and it shows a great advance in design, and in the nearby future, a complete method to diagnose vocal folds pathologies.","PeriodicalId":213756,"journal":{"name":"2008 IEEE International Symposium on Signal Processing and Information Technology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123712636","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: 18
Anisotropic Diffusion for Preservation of Line-edges 保存线边的各向异性扩散
2008 IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2008-12-01 DOI: 10.1109/ISSPIT.2008.4775703
HyeSuk Kim, Gihong Kim, Gueesang Lee, June-Young Chang, Hanjin Cho
{"title":"Anisotropic Diffusion for Preservation of Line-edges","authors":"HyeSuk Kim, Gihong Kim, Gueesang Lee, June-Young Chang, Hanjin Cho","doi":"10.1109/ISSPIT.2008.4775703","DOIUrl":"https://doi.org/10.1109/ISSPIT.2008.4775703","url":null,"abstract":"In existing approaches, diffusion is performed in four directions (North, South, East, West) without specific conditions. Therefore, these methods have shortcomings of distorted with the existence of impulse noises. In this paper, a new anisotropic diffusion based on directions of line-edges is proposed to enhance preservation of line-edges together with removal of noises. In the proposed method, an edge detection mask is used to find the direction of a line-edge. As a result, when the magnitude of edge detection is large enough, there exists a line-edge. In the case of a line-edge, the weight of diffusion is selected adaptively according to the direction of the line-edge. The diffusion is based on 8-directions diffusion with emphasis on the line-edge direction. Experimental results show that the proposed method can eliminate noise while preserving contour of line-edges.","PeriodicalId":213756,"journal":{"name":"2008 IEEE International Symposium on Signal Processing and Information Technology","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125640704","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
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