2008 15th International Conference on Systems, Signals and Image Processing最新文献_第10页

Multimodal search for effective image retrieval 多模式搜索，有效的图像检索

2008 15th International Conference on Systems, Signals and Image Processing Pub Date : 2008-06-25 DOI: 10.1109/IWSSIP.2008.4604410

H. Fu, Y.Y. Xu, H. Pao

引用次数: 6

Packet size process modeling of measured self-similar network traffic with defragmentation method 基于碎片整理方法的测量自相似网络流量的数据包大小过程建模

2008 15th International Conference on Systems, Signals and Image Processing Pub Date : 2008-06-25 DOI: 10.1109/IWSSIP.2008.4604415

M. Fras, J. Mohorko, Z. Cucej

{"title":"Packet size process modeling of measured self-similar network traffic with defragmentation method","authors":"M. Fras, J. Mohorko, Z. Cucej","doi":"10.1109/IWSSIP.2008.4604415","DOIUrl":"https://doi.org/10.1109/IWSSIP.2008.4604415","url":null,"abstract":"Analysis and modeling of telecommunication networks by simulations has become one of the main tools in the process of telecommunication-networkspsila planning and upgrading. Knowledge regarding the statistical modeling of network traffic is very important. Here we tend towards modeled network traffic which would be the best possible approximation of the measured traffic. Throughout our research in the field of self-similar network traffic we have faced problem of statistically describing the packet-size process. We have noticed that small discrepancies between measured histograms and estimated probability density functions, as used in traffic generator models, lead to large discrepancy between measured and modeled network traffics. In this research we tried to estimate the probability density function of a measured histogram for process-packet size, in such way that would decrease these discrepancies. For this purpose, we have developed a novel method of modeling network traffic, which is based on the defragmentation of measured traffic. Using this defragmentation method, we can estimate parameters of filespsila size process, from captured packets and use these statistical parameters for traffic generation, via the OPNET simulation tool. From these simulations, we can show that this newly-developed method decreases discrepancy between packet size process histograms of measured and simulated network traffics. This consequently leads to a decrease in discrepancy between measured and simulated network traffics.","PeriodicalId":322045,"journal":{"name":"2008 15th International Conference on Systems, Signals and Image Processing","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132145832","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

Retrieving images using content-based followed by pixel-based search 使用基于内容的检索图像，然后是基于像素的搜索

2008 15th International Conference on Systems, Signals and Image Processing Pub Date : 2008-06-25 DOI: 10.1109/IWSSIP.2008.4604419

I. Stojanovic, S. Bogdanova, M. Bogdanov

引用次数: 5

Comparation of QoS parameters of received IPTV signals, using different compression algorithms for streaming Live or Stored AV Materials 使用不同的压缩算法对直播或存储的AV材料进行流媒体传输，比较接收到的IPTV信号的QoS参数

2008 15th International Conference on Systems, Signals and Image Processing Pub Date : 2008-06-25 DOI: 10.1109/IWSSIP.2008.4604468

P. Begovic, N. Behlilovic, A. Mastilovic

引用次数: 5

Multimodal biometric authentication using speech and hand geometry fusion 使用语音和手部几何融合的多模态生物识别认证

2008 15th International Conference on Systems, Signals and Image Processing Pub Date : 2008-06-25 DOI: 10.1109/IWSSIP.2008.4604366

P. Varchol, D. Levický, Jozef Juhar

引用次数: 22

Comparison of automatic speech recognizer SPHINX 3.6 and SPHINX 4.0 for creating systems in Slovak language 用于创建斯洛伐克语系统的自动语音识别器SPHINX 3.6和SPHINX 4.0的比较

2008 15th International Conference on Systems, Signals and Image Processing Pub Date : 2008-06-25 DOI: 10.1109/IWSSIP.2008.4604484

J. Vojtko, J. Korosi, G. Rozinaj

引用次数: 4

Advanced interactive television services require content synchronization 先进的互动电视业务需要内容同步

2008 15th International Conference on Systems, Signals and Image Processing Pub Date : 2008-06-25 DOI: 10.1109/IWSSIP.2008.4604379

M. Oskar van Deventer, Hans M. Stokking, Omar A. Niamut, F. A. Walraven, Victor B. Klos

引用次数: 22

Phase unwrapping via diversity and graph cuts 阶段展开通过多样性和图形切割

2008 15th International Conference on Systems, Signals and Image Processing Pub Date : 2008-06-25 DOI: 10.1109/IWSSIP.2008.4604474

J. Bioucas-Dias, Gonçalo Valadão

{"title":"Phase unwrapping via diversity and graph cuts","authors":"J. Bioucas-Dias, Gonçalo Valadão","doi":"10.1109/IWSSIP.2008.4604474","DOIUrl":"https://doi.org/10.1109/IWSSIP.2008.4604474","url":null,"abstract":"Many imaging techniques, e.g., interferometric synthetic aperture radar, magnetic resonance imaging, diffraction tomography, yield interferometric phase images. For these applications, the measurements are modulo-2p, where p is the period, a certain real number, whereas the aimed information is contained in the true phase value. The process of inferring the phase from its wrapped modulo-2p values is the so-called phase unwrapping (PU) problem. In this paper we present a graph-cuts based PU technique that uses two wrapped images, of the same scene, generated with different periods p1, p2. This diversity allows to reduce the ambiguity effect of the wrapping modulo-2p operation, and is extensible to more than two periods. To infer the original data, we assume a first order Markov random field (MRF) prior and a maximum a posteriori probability (MAP) optimization viewpoint. The employed objective functionals have nonconvex, sinusoidal, data fidelity terms and a non isotropic total variation (TV) prior. This is an integer, nonconvex optimization problem for which we apply a technique that yields an exact, low order polynomial complexity, global solution. At its core is a non iterative graph cuts based optimization algorithm. As far as we know, all the few existing period diversity capable PU techniques for images, are either far too simplistic or employ simulated annealing, thus exponential complexity in time, optimization algorithms.","PeriodicalId":322045,"journal":{"name":"2008 15th International Conference on Systems, Signals and Image Processing","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131024705","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

Dynamic expansion of IBCF entities in IMS interconnection scenarios IMS对接场景下IBCF实体的动态扩展

2008 15th International Conference on Systems, Signals and Image Processing Pub Date : 2008-06-25 DOI: 10.1109/IWSSIP.2008.4604466

Stephan Massner

引用次数: 3

Next generation of multimedia services - NGN based IPTV architecture 下一代多媒体业务——基于NGN的IPTV架构

2008 15th International Conference on Systems, Signals and Image Processing Pub Date : 2008-06-25 DOI: 10.1109/IWSSIP.2008.4604481

E. Mikóczy

引用次数: 14