发布求助
文献互助 智能选刊 最新文献

Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers最新文献

筛选
英文 中文
EEG and MEG source localization using recursively applied (RAP) MUSIC 基于递归应用(RAP) MUSIC的脑电和脑磁图源定位
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-12-31 DOI: 10.1109/ACSSC.1996.599135
J. Mosher, R. Leahy
{"title":"EEG and MEG source localization using recursively applied (RAP) MUSIC","authors":"J. Mosher, R. Leahy","doi":"10.1109/ACSSC.1996.599135","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.599135","url":null,"abstract":"The multiple signal characterization (MUSIC) algorithm locates multiple asynchronous dipolar sources from electroencephalography (EEG) and magnetoencephalography (MEG) data. A signal subspace is estimated from the data, then the algorithm scans a single dipole model through a three-dimensional head volume and computes projections onto this subspace. To locate the sources, the user must search the head volume for local peaks in the projection metric. We describe a novel extension of this approach which we refer to as RAP (recursively applied) MUSIC. This new procedure automatically extracts the locations of the sources through a recursive use of subspace projections, which uses the metric of principal correlations as a multidimensional form of correlation analysis between the model subspace and the data subspace. The dipolar orientations, a form of \"diverse polarization\", are easily extracted using the associated principal vectors.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125910949","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: 21
Exploration of bit reoptimization schemes in transform-based speech coding 基于变换的语音编码中位再优化方案的探索
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.601155
G. Mandyam
{"title":"Exploration of bit reoptimization schemes in transform-based speech coding","authors":"G. Mandyam","doi":"10.1109/ACSSC.1996.601155","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.601155","url":null,"abstract":"Transform-based speech coding is an attractive alternative to conventional (i.e. linear-predictive) speech coding schemes due to its simplicity and its flexibility with respect to particular frequency components. The classic transform-based speech coding algorithm gives a well-defined coding procedure which yields good results. However its optimal bit assignment procedure has a good degree of variability. In this work several bit reoptimization schemes are explored, and a reoptimization scheme is proposed that is proven by simulations to be beneficial.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123138002","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
Moving DSP into new curricular areas 将DSP应用到新的课程领域
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.600860
L. DeBrunner, S. Radhakrishnan, V. DeBrunner
{"title":"Moving DSP into new curricular areas","authors":"L. DeBrunner, S. Radhakrishnan, V. DeBrunner","doi":"10.1109/ACSSC.1996.600860","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.600860","url":null,"abstract":"The Telecomputing Laboratory, established under the NSF Instrumentation and Laboratory Improvement program, was designed as a dual-use facility to serve students in both digital signal processing (DSP) classes and an innovative \"telecomputing\" class dealing with distributed multimedia processing. The telecomputing class involves students in computer engineering, electrical engineering, and computer science. In this class, we have brought the basic principles of DSP to students with a limited background in systems through integration with basic principles of networking, multimedia, and computer architecture.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"311 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124428430","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
Application of smart pixels to digital image halftoning 智能像素在数字图像半色调中的应用
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.600969
A. Sayles, B. Shoop
{"title":"Application of smart pixels to digital image halftoning","authors":"A. Sayles, B. Shoop","doi":"10.1109/ACSSC.1996.600969","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.600969","url":null,"abstract":"An innovative circuit for digital image halftoning applications has been implemented in several different hybrid fabrication processes. The circuits have been demonstrated to be compatible with several approaches to smart pixels and offer a wide range of options for realizing optical inputs and outputs. The 0.8 micron n-well CMOS process at MOSIS has been used in conjunction with SEED technology to implement a digital image halftoning algorithm that offers the potential for higher quality binary images. Similar algorithms have also been implemented using combined CMOS and liquid crystal on silicon processes as well as the Vitesse H-GaAs III foundry process.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123162131","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
Performance of optimal digital page detection in a two-dimensional ISI/AWGN channel 二维ISI/AWGN信道中最优数字页面检测性能
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.599086
K. Chugg
{"title":"Performance of optimal digital page detection in a two-dimensional ISI/AWGN channel","authors":"K. Chugg","doi":"10.1109/ACSSC.1996.599086","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.599086","url":null,"abstract":"The performance of maximum likelihood page detection (MLPD) of digital pages of data corrupted by intersymbol interference (ISI) and additive white Gaussian noise (AWGN) is derived. While the development concentrates on the linear ISI channel with AWGN, the results characterize the performance of the ML state estimator for a more general class of Markov random fields. Hence, while page detection in optical memory systems provides the motivation, the results are applicable to a broader class of problems including image de-blurring. While MLPD is infeasible, its performance provides a lower bound for the performance of practical data detection techniques. This utility is demonstrated through numerical examples.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124265201","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
Optimal approximation of multidimensional discrete signals with applications 多维离散信号的最优逼近及其应用
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.601067
W. Lu
{"title":"Optimal approximation of multidimensional discrete signals with applications","authors":"W. Lu","doi":"10.1109/ACSSC.1996.601067","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.601067","url":null,"abstract":"This paper presents an analytical solution to a general approximation problem for multidimensional (m-D) discrete signals. The solution is optimal in the Frobenius-norm sense and includes the well known singular value decomposition (SVD) based approximation as a special case with m=2. Computational issues involved in the algorithm implementation as well as potential applications of the algorithm to image and video coding are discussed.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116762768","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
Adaptive coding using finite state hierarchical table lookup vector quantization with variable block sizes 使用可变块大小的有限状态分层表查找矢量量化的自适应编码
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.599083
S. Mehrotra, N. Chaddha, R. Gray
{"title":"Adaptive coding using finite state hierarchical table lookup vector quantization with variable block sizes","authors":"S. Mehrotra, N. Chaddha, R. Gray","doi":"10.1109/ACSSC.1996.599083","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.599083","url":null,"abstract":"We present an algorithm for performing adaptive vector quantization with memory. By using the memory between adjacent blocks which are encoded, we can take advantage of the correlation between adjacent blocks of pixels to reduce the redundancy. We use finite state vector quantization to provide the memory. To further improve the performance by exploiting nonstationarities in the image, we use variable block sizes in the encoding. This is done by using a quadtree data structure to represent an encoding based on variable block sizes. To reduce the encoding complexity, hierarchical table lookup schemes are used to replace all the full search encoders.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116774331","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
Carry select and input select adder for late arriving data 对延迟到达的数据进行选择和输入选择加法器
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.600853
E. Schwarz, T. McPherson, C. Krygowski
{"title":"Carry select and input select adder for late arriving data","authors":"E. Schwarz, T. McPherson, C. Krygowski","doi":"10.1109/ACSSC.1996.600853","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.600853","url":null,"abstract":"An adder is described which is optimized for the case of one of its inputs having a skewed arrival time. If the least significant bits of either of the operands arrives last, a conventional adder will not be able to execute concurrently with any of the prior computation. This paper shows a design which takes advantage of the early arriving bits and performs early computation of the sum. The adder has been fabricated and is part of the exponent unit of a future mainframe computer.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"79 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120880455","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
Integrated video interface technology 集成视频接口技术
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.601126
J. Eldon
{"title":"Integrated video interface technology","authors":"J. Eldon","doi":"10.1109/ACSSC.1996.601126","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.601126","url":null,"abstract":"Technology finally permits high-end consumer systems to accept, store, and display broadcast-quality signals cost-effectively. Mixed-signal design challenges include low-noise preprocessing and clean reconstruction of the video signal, plus real-time visual evaluation of image artifacts. This paper reviews the design, architecture and performance of a video input/output chipset which can digitize, decompose, mix, and synthesize NTSC and PAL television signals.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127497172","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 cross-correlation based approach to blind identification: analytic performance evaluation 基于交叉相关的盲识别方法:分析性能评价
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.600884
Haralambos Pozidis, A. Petropulu
{"title":"A cross-correlation based approach to blind identification: analytic performance evaluation","authors":"Haralambos Pozidis, A. Petropulu","doi":"10.1109/ACSSC.1996.600884","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.600884","url":null,"abstract":"We have recently proposed a cross-spectrum based method for the two-channel blind identification problem. Two observations were assumed available, corresponding to the output of two channels driven by the same input. The channels were estimated based on the phase of the cross-correlation of the observations, filtered through their minimum-phase equivalent filters. Through simulations that method was found to be robust to additive noise, and significantly outperformed existing methods at low signal-to-noise ratios. In this paper we provide an analytic justification of the robustness of that method. We study analytically the propagation of noise in the phase estimate and in the channel estimates. Validation of the analytical results is provided by means of Monte Carlo simulations.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124955733","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
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：604180095
Book学术官方微信