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2007 International Symposium on Signals, Circuits and Systems最新文献

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CNN Processing Techniques for Multi-robot Coordination 多机器人协调的CNN处理技术
2007 International Symposium on Signals, Circuits and Systems Pub Date : 2007-07-13 DOI: 10.1109/ISSCS.2007.4292703
I. Gavriluț, V. Tiponut, A. Gacsádi, C. Grava
{"title":"CNN Processing Techniques for Multi-robot Coordination","authors":"I. Gavriluț, V. Tiponut, A. Gacsádi, C. Grava","doi":"10.1109/ISSCS.2007.4292703","DOIUrl":"https://doi.org/10.1109/ISSCS.2007.4292703","url":null,"abstract":"The paper presents some vision-based algorithms for multi-robot coordination. Cellular Neural Networks (CNNs) processing techniques are used here for real time motion planning of the robots. The CNN methods are considered an advantageous solution for image processing in autonomous mobile robots guidance.","PeriodicalId":225101,"journal":{"name":"2007 International Symposium on Signals, Circuits and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125944398","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
Adaptive Filter Performance Analysis: A Unified Approach 自适应滤波器性能分析:一个统一的方法
2007 International Symposium on Signals, Circuits and Systems Pub Date : 2007-07-13 DOI: 10.1109/ISSCS.2007.4292679
J. H. Husøy
{"title":"Adaptive Filter Performance Analysis: A Unified Approach","authors":"J. H. Husøy","doi":"10.1109/ISSCS.2007.4292679","DOIUrl":"https://doi.org/10.1109/ISSCS.2007.4292679","url":null,"abstract":"Based on the theory of simple preconditioned iterative linear equation solvers, we recently introduced a framework within which all major adaptive filter algorithms can be viewed as special cases through the specification of a few parameters. This resulted in two versions of a generic adaptive filter update equation which we in this paper use in deriving general explicit expressions for the learning curve, the steady state excess mean square error (EMSE) and the steady state mean square coefficient deviation (MSD) that are applicable to many families of adaptive filter algorithms. We present experimental results supporting the usefulness and validity of our approach.","PeriodicalId":225101,"journal":{"name":"2007 International Symposium on Signals, Circuits and Systems","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126189924","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
On Stereo Embedding by Reversible Watermarking 基于可逆水印的立体嵌入研究
2007 International Symposium on Signals, Circuits and Systems Pub Date : 2007-07-13 DOI: 10.1109/ISSCS.2007.4292745
D. Coltuc
{"title":"On Stereo Embedding by Reversible Watermarking","authors":"D. Coltuc","doi":"10.1109/ISSCS.2007.4292745","DOIUrl":"https://doi.org/10.1109/ISSCS.2007.4292745","url":null,"abstract":"This paper investigates the storage and bandwidth requirements reduction for stereo images by using reversible watermarking. Given a pair of stereo images, the information needed to recover the right frame is embedded into the left frame. Thus, storage and bandwidth requirements are halved. The proposed approach relies on the embedding capacity of the reversible watermarking. Compared with simple stereo image pair compression, the proposed approach has the advantage that the content of the image remains available without additional manipulations. Furthermore, the use of reversible watermarking allows the exact recovery of the left frame. If the reversible watermarking provides enough data hiding bit-rate, the right frame is exactly recovered, too. The validity of the proposed approach is investigated and experimental results are provided.","PeriodicalId":225101,"journal":{"name":"2007 International Symposium on Signals, Circuits and Systems","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126738018","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: 20
Computer Experiments in System Identification Using a Prefltering Bank 利用预滤波组进行系统辨识的计算机实验
2007 International Symposium on Signals, Circuits and Systems Pub Date : 2007-07-13 DOI: 10.1109/ISSCS.2007.4292749
M. Alexiu, D. Aiordachioaie
{"title":"Computer Experiments in System Identification Using a Prefltering Bank","authors":"M. Alexiu, D. Aiordachioaie","doi":"10.1109/ISSCS.2007.4292749","DOIUrl":"https://doi.org/10.1109/ISSCS.2007.4292749","url":null,"abstract":"This paper proposes a scheme for decreasing the number of parameters identified by adaptive filters with finite impulse response. The real target is to decrease the computational complexity by using the proposed identification scheme. A filter bank is used to decompose the input signal into several components, which are then used as input sequence for an adaptive algorithm. RLS is used as adaptive algorithm; current implementations require a computational complexity that exponentially grows with the number of parameters. Three sets of functions are used as impulse responses for the filter bank: rectangular, orthogonalized exponential and triangular functions. The cases are analyzed from identification accuracy point of view; the third case is also analyzed from obtained quality versus needed computational complexity point of view, and experimental data on RLS convergence is provided.","PeriodicalId":225101,"journal":{"name":"2007 International Symposium on Signals, Circuits and Systems","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114840182","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
Dynamic Adaptability of Image Processing Components in Medical Applications 医学应用中图像处理组件的动态适应性
2007 International Symposium on Signals, Circuits and Systems Pub Date : 2007-07-13 DOI: 10.1109/ISSCS.2007.4292742
M. Vaida, V. Todica
{"title":"Dynamic Adaptability of Image Processing Components in Medical Applications","authors":"M. Vaida, V. Todica","doi":"10.1109/ISSCS.2007.4292742","DOIUrl":"https://doi.org/10.1109/ISSCS.2007.4292742","url":null,"abstract":"The aim of the paper is to present a mechanism able to be used in generating medical image processing applications using a dynamic assembling process. Two medical image processing dedicated applications, Healthlmag and ImageDiagnose are used in the integration process. Representative quantitative and statistics parameters are offered for DNA, Stereology and Echography measurements by the applications. Important facilities concerning the preprocessing, analysis, data visualization are considered for medical investigations. The possibility to integrate open source components, dedicated components, developed using different technologies and platforms will represent the target of the future work. Using Service Oriented Architecture technology, dynamic adaptability services will be integrated as image processing facilities.","PeriodicalId":225101,"journal":{"name":"2007 International Symposium on Signals, Circuits and Systems","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126162598","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
Dynamic Range Enhancement in Digital Camera Acquisition of Prostheses Hip Xrays 数字相机获取假体髋关节x射线的动态范围增强
2007 International Symposium on Signals, Circuits and Systems Pub Date : 2007-07-13 DOI: 10.1109/ISSCS.2007.4292686
C. Florea, C. Vertan
{"title":"Dynamic Range Enhancement in Digital Camera Acquisition of Prostheses Hip Xrays","authors":"C. Florea, C. Vertan","doi":"10.1109/ISSCS.2007.4292686","DOIUrl":"https://doi.org/10.1109/ISSCS.2007.4292686","url":null,"abstract":"The typical radiographic film exhibits a dynamic range of some 75dB. The digital capture of such radiography with a consumer-grade digital still camera significantly decreases the dynamic range to some 48dB. We propose a method that boosts the dynamic range, by the combining a set of digital images of the same Xray, acquired under different exposure values. The fusion of the acquired images is performed according to a weighting scheme derived from the confidence information extracted from an experimentally derived digital still camera response function. The resulting image can be obtained at various high dynamic range values and shows improved feature visibility.","PeriodicalId":225101,"journal":{"name":"2007 International Symposium on Signals, Circuits and Systems","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126487734","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
Equalization in Space-Frequency Coded Cooperative Communication System with Multiple Frequency Offsets 多频偏空频编码协同通信系统的均衡
2007 International Symposium on Signals, Circuits and Systems Pub Date : 2007-07-13 DOI: 10.1109/ISSCS.2007.4292791
Feng Tian, X. Xia, P. Ching
{"title":"Equalization in Space-Frequency Coded Cooperative Communication System with Multiple Frequency Offsets","authors":"Feng Tian, X. Xia, P. Ching","doi":"10.1109/ISSCS.2007.4292791","DOIUrl":"https://doi.org/10.1109/ISSCS.2007.4292791","url":null,"abstract":"To combat synchronization errors in cooperative communication, [1] applied the orthogonal frequency division multiplexing (OFDM) technique to achieve the full cooperative diversity and full multipath diversity for asynchronous cooperative communications, in which a kind of high rate space-frequency (SF) code was used at relay nodes. However, as we all know, although OFDM can combat timing errors, it is very sensitive to carrier frequency offset (CFO). For a conventional MIMO-OFDM system, only one CFO exists and its effect can be easily compensated. But for cooperative communication, the CFO between each relay and destination may be different. These multiple CFO make frequency compensation difficult if not impossible. This paper proposes an equalization scheme with its simplified form for SF codes to combat multiple CFO. Simulation results show that the proposed scheme works well with moderate computational complexity when the CFO is not very high.","PeriodicalId":225101,"journal":{"name":"2007 International Symposium on Signals, Circuits and Systems","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128264968","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
DCT Based Null Space Method for Face Recognition 基于DCT的零空间人脸识别方法
2007 International Symposium on Signals, Circuits and Systems Pub Date : 2007-07-13 DOI: 10.1109/ISSCS.2007.4292729
Chuan-qiang Zhao, Huiyuan Wang, Xiaojuan Wu
{"title":"DCT Based Null Space Method for Face Recognition","authors":"Chuan-qiang Zhao, Huiyuan Wang, Xiaojuan Wu","doi":"10.1109/ISSCS.2007.4292729","DOIUrl":"https://doi.org/10.1109/ISSCS.2007.4292729","url":null,"abstract":"An improved null space LDA method based on discrete cosine transform (DCT) is proposed to solve both problems. First, by employing DCT instead of \"pixel grouping\" process and using different definition of the within-class scatter matrix, an improved null space method is proposed. Then, we combine this method with fractional-LDA (F-LDA) and an efficient new feature extraction algorithm to perform face recognition. Experimental results show that the proposed method achieves better performance than other existing ones.","PeriodicalId":225101,"journal":{"name":"2007 International Symposium on Signals, Circuits and Systems","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130616926","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
A Practical Study of Finger Assignment Schemes in the Soft Handover Region with Multiple Base Stations 多基站软切换区域手指分配方案的实践研究
2007 International Symposium on Signals, Circuits and Systems Pub Date : 2007-07-13 DOI: 10.1109/ISSCS.2007.4292762
Seyeong Choi, Mohamed-Slim Alouini, K. Qaraqe, Hong-Chuan Yang
{"title":"A Practical Study of Finger Assignment Schemes in the Soft Handover Region with Multiple Base Stations","authors":"Seyeong Choi, Mohamed-Slim Alouini, K. Qaraqe, Hong-Chuan Yang","doi":"10.1109/ISSCS.2007.4292762","DOIUrl":"https://doi.org/10.1109/ISSCS.2007.4292762","url":null,"abstract":"We present the effects of correlated or/and non-identical fading channels as well as outdated/imperfect channel estimations on the performance of newly proposed finger assignment schemes for RAKE receivers in the soft handover region. The performance of these schemes were previously analyzed by the authors over independent and identically distributed (i.i.d.) Rayleigh fading channels. In this paper, we consider an exponentially decaying power delay profile among paths along with an exponential correlation among these paths. The effect of outdated/imperfect channel estimations is also evaluated. Simulation results show that our proposed schemes are still applicable to non-i.i.d. fading channels and are offering some interesting performance gains in the practical channel environments considered in this paper.","PeriodicalId":225101,"journal":{"name":"2007 International Symposium on Signals, Circuits and Systems","volume":"175 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133541158","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
Texture Classification by ICA 基于ICA的纹理分类
2007 International Symposium on Signals, Circuits and Systems Pub Date : 2007-07-13 DOI: 10.1109/ISSCS.2007.4292759
D. Coltuc, T. Fournel, J. Becker
{"title":"Texture Classification by ICA","authors":"D. Coltuc, T. Fournel, J. Becker","doi":"10.1109/ISSCS.2007.4292759","DOIUrl":"https://doi.org/10.1109/ISSCS.2007.4292759","url":null,"abstract":"ICA (Independent Component Analysis) is a mathematical tool traditionally employed for source separation. In this paper, we test its ability for texture analysis, in order to provide a new texture classification method. From the multitude of the existing algorithms, we have chosen FastICA, a version based on the forth order statistics of the analyzed signal. By FastICA, a texture is decomposed in a weighted sum of components with a rather high degree of independence. Each component is further described by means of its negentropy, which is a measure of the nongaussianity. We show experimentally, that the three most nongaussian components of each analyzed texture are able to cluster the test samples.","PeriodicalId":225101,"journal":{"name":"2007 International Symposium on Signals, Circuits and Systems","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133755749","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: 4
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