发布求助
文献互助 智能选刊 最新文献

International Symposium on Signals, Circuits and Systems ISSCS2013最新文献

筛选
英文 中文
Application of wavelet and EMD-based denoising to phonocardiograms 小波和emd去噪在心音图中的应用
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651264
A. Gavrovska, M. Slavkovic, I. Reljin, B. Reljin
{"title":"Application of wavelet and EMD-based denoising to phonocardiograms","authors":"A. Gavrovska, M. Slavkovic, I. Reljin, B. Reljin","doi":"10.1109/ISSCS.2013.6651264","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651264","url":null,"abstract":"Wavelet-based (WT) denoising has been frequently used as simple and efficient method enabling high signal-to-noise ratio. Moreover, by using second generation WT and lifting scheme, even better performance has been obtained. Besides the WT, empirical mode decomposition (EMD) is another efficient noise reduction technique, which enables adaptive decomposition based only on signal characteristics. Both WT and EMD denoising concepts find place in pre-processing of phonocardiograms (PCGs). Although these techniques are very effective in denoising, their inappropriate use can cause unwanted signal distortion. In this paper, we analyzed both denoising techniques and tested their influence to the degradation of PCGs, particularly regarding to some diagnostically relevant cardiac events, such as the first and second heart sound (S1 and S2) and clicks. It was shown that the morphology of S1, S2, and even the existence of subtle features (clicks) within the PCG, depend on the denoising method. Results of evaluation tests indicate which combination of denoising algorithm is the best choice for PCG signal pre-processing.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"125 11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133172846","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: 22
Classifiers for decoding patterns in the response of an artificial retina 人工视网膜反应解码模式的分类器
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651168
H. Teodorescu, M. Hulea
{"title":"Classifiers for decoding patterns in the response of an artificial retina","authors":"H. Teodorescu, M. Hulea","doi":"10.1109/ISSCS.2013.6651168","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651168","url":null,"abstract":"We present a neural classifier able to reliably determine the correlation between elementary image patterns and the characteristics of the chaotic regime of an artificial retina based on nonlinear dynamics. While the classifier is a typical neural one, it has the role of completing the neural retina with the equivalent of the upper layers of neurons in the nervous system of mammals. Without this classification stage, the proper use of the retina is imperfect, hence the significance of reporting on it. The performance of the classifier is discussed in relation to the application requirements. This paper represents a preliminary, abstracted version of a paper to be published in a journal.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131369316","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
Estimating directional smoothness of images with the aid of the hyperanalytic wavelet packet transform 利用超解析小波包变换估计图像的方向平滑度
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651191
C. Nafornita, A. Isar
{"title":"Estimating directional smoothness of images with the aid of the hyperanalytic wavelet packet transform","authors":"C. Nafornita, A. Isar","doi":"10.1109/ISSCS.2013.6651191","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651191","url":null,"abstract":"We propose a method for the estimation of smoothness on the preferential orientations of an anisotropic image. The method associates the utilization of the Hyperanalytic Wavelet Packet Transform, for the identification of the preferential orientations of the image considered and for the separation of the details corresponding at each such direction, with the utilization of a Hurst exponent estimator for the evaluation of smoothness.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133871366","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
Implementing a complex FIR filter on a novel parallel DSP architecture 在新型并行DSP架构上实现复杂FIR滤波器
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651182
A. Grigore, Radu Pralea, A. Enescu
{"title":"Implementing a complex FIR filter on a novel parallel DSP architecture","authors":"A. Grigore, Radu Pralea, A. Enescu","doi":"10.1109/ISSCS.2013.6651182","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651182","url":null,"abstract":"The current paper describes a novel high-parallel architecture of a DSP (Digital Signal Processing) core and depicts optimizing techniques for implementation using the affiliated compiler. A demonstrative benchmark is presented for a FIR (Finite Impulse Response) complex filter, emphasizing differences over known digital signal processors.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133300750","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
Capacity control of reversible watermarking by two-thresholds embedding: Further results 基于双阈值嵌入的可逆水印容量控制研究
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651230
I. Caciula, D. Coltuc
{"title":"Capacity control of reversible watermarking by two-thresholds embedding: Further results","authors":"I. Caciula, D. Coltuc","doi":"10.1109/ISSCS.2013.6651230","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651230","url":null,"abstract":"The classical threshold control of difference expansion reversible watermarking does not ensure a fine tuning of the embedding capacity and the simple partial embedding can introduce artifacts. The newly proposed two-thresholds embedding capacity control splits the image into two parts and marks them with consecutive threshold values. Intermediate capacity values between the ones provided by the thresholds are obtained by varying the ratio between the two parts. The method ensures a fine control of the capacity without introducing artifacts. This paper proposes a lower distortion version of the two-thresholds embedding reversible watermarking scheme. Experimental results are provided.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116779325","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
A 11 ppm/°c CMOS current reference circuit with no external components 一个11 ppm/°c的CMOS电流参考电路，没有外部元件
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651190
Damian Imbrea, N. Cojan
{"title":"A 11 ppm/°c CMOS current reference circuit with no external components","authors":"Damian Imbrea, N. Cojan","doi":"10.1109/ISSCS.2013.6651190","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651190","url":null,"abstract":"A new CMOS current reference circuit is described. The circuit designed in 65 nm CMOS standard process operates in the temperature range [-40...+130] °C with supply voltage from 2.1 V to 3.0 V. The reference current is 1 μA ± 0.9 nA having a line sensitivity of 0.5 nA/V and 200 dB power supply rejection ratio at low frequencies. No curvature compensation techniques are used. The circuit occupies 0.0091 mm2 silicon area.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116513842","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
Print signatures for documents using EU logo 打印使用欧盟标志的文件签名
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651238
C. Damian, D. Coltuc
{"title":"Print signatures for documents using EU logo","authors":"C. Damian, D. Coltuc","doi":"10.1109/ISSCS.2013.6651238","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651238","url":null,"abstract":"Printed documents authentication by print signature is reconsidered under two constraints: preservation of document layout and less expensive imaging devices. Two procedures are proposed for the signature extraction. Both of them are dedicated to documents using the EU logo but other logos could be used in the same manner. The signature - a 200 bits string - is invariant at translations and scaling and, due to the employed distance, it is obtained invariance at rotations. The signatures are compared by considering the minimum of Pearson distance, calculated for all circular shifts. The approach accuracy is evaluated in view of document authencation by means of ROC curve and EER. Considerations regarding the procedures complexity are done.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"15 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132056861","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
Harmonic results for the AC/AC direct converter built of CSI modules 由CSI模块构成的AC/AC直接变换器的谐波分析
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651171
D. Neacşu
{"title":"Harmonic results for the AC/AC direct converter built of CSI modules","authors":"D. Neacşu","doi":"10.1109/ISSCS.2013.6651171","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651171","url":null,"abstract":"The Multi-Million-Point-FFT algorithm from MATLAB is applied to waveforms from an AC/AC direct converter topology operated with Space Vector Modulation control. This analysis benchmark allowed the optimization of the converter's control with a feed-forward compensation for the influence of the grid voltage, and with an interleaved control of the PWM carriers used within the six individual power stages. Proving the use of multiple PWM carriers within the AC/AC direct converter is considered a major novelty.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"65 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132359371","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
Generic platform for IoT and cloud computing interoperability study 物联网与云计算互操作性研究通用平台
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651222
G. Suciu, S. Halunga, Alexandru Vulpe, Victor Suciu
{"title":"Generic platform for IoT and cloud computing interoperability study","authors":"G. Suciu, S. Halunga, Alexandru Vulpe, Victor Suciu","doi":"10.1109/ISSCS.2013.6651222","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651222","url":null,"abstract":"Data and Internet services have become ubiquitous, and the recent trend of building massive cloud datacenters is part of the current network evolution. The success of Internet of Things (IoT) will not so much depend on the development of new technologies, but rather on connecting and integrating existing resources. The paper proposes a novel architecture that enables objects to exchange information through the Internet to achieve nonintrusive behavior and customized services based on an open source cloud platform. To achieve this goal, the information driven interactions are done not only in a peer to peer method, but also via advanced cloud services. The result is a generic platform where devices, systems and services will take part in a heterogeneous and decentralized architecture. We demonstrate that IoT is all about interoperability, from connected cloud computing using RFID, NFC, M2M and sensor technology to digital content and context-aware services. We conclude our cloud of things vision by expanding on the need for interoperability of cloud and IoT.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131820451","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
An improvement for hard-decision detection of 2PPM modulated IR-UWB signals 2PPM调制IR-UWB信号硬决策检测的改进
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651206
Adrian Popa
{"title":"An improvement for hard-decision detection of 2PPM modulated IR-UWB signals","authors":"Adrian Popa","doi":"10.1109/ISSCS.2013.6651206","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651206","url":null,"abstract":"An improved hard-decision algorithm to estimate the stream of transmitted bits is studied for non-coherent demodulation of 2PPM IR-UWB signals based on energy detection (ED). By observing the structure of 2PPM transmitted signal, a redundancy is found at physical level and is used at the logical decisional level. Thus, for the detection part based on the values at the integrators outputs, a supplementary analysis of a pairs of adjacent integration intervals belonging to subsequent frames is proposed. The performance evaluation of this system shows an improvement of bit error rate, requiring only a small modification of an basic hard-decision ED-receiver.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127248314","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
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