发布求助
文献互助 智能选刊 最新文献

Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007最新文献

筛选
英文 中文
Magnetic resonance Angiography- an advanced technique in MRI using flow imaging 磁共振血管造影-一种先进的磁共振成像技术，使用血流成像
Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007 Pub Date : 2007-12-10 DOI: 10.1109/LSSA.2007.4400887
M. I. Hossain, A. Abedin
{"title":"Magnetic resonance Angiography- an advanced technique in MRI using flow imaging","authors":"M. I. Hossain, A. Abedin","doi":"10.1109/LSSA.2007.4400887","DOIUrl":"https://doi.org/10.1109/LSSA.2007.4400887","url":null,"abstract":"Magnetic resonance angiography (MRA) produces images of flowing blood. The intensity in these images is proportional to the velocity of the flow. It produces an image, which distinguishes between static and flowing blood. There are three general types of MRA, time-of-flight, phase contrast angiography, and contrast enhanced angiography.","PeriodicalId":274617,"journal":{"name":"Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122876425","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
Parallel digital signal processing using multi-issue instructions 使用多问题指令的并行数字信号处理
Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007 Pub Date : 2007-09-01 DOI: 10.1109/SPA.2007.5903293
A. Dabrowski, P. Pawlowski, T. Marciniak
{"title":"Parallel digital signal processing using multi-issue instructions","authors":"A. Dabrowski, P. Pawlowski, T. Marciniak","doi":"10.1109/SPA.2007.5903293","DOIUrl":"https://doi.org/10.1109/SPA.2007.5903293","url":null,"abstract":"This paper presents aspects of parallelism of computations in processing of signals using digital signal processors (DSPs) with multi-issue assembler instructions. We present general features of the contemporary DSPs with special attention paid to the VLIW architecture. In order to illustrate the multi-issue instruction technique we analyze performance of the fixed-point Blackfin processor by means of chosen typical signal processing tasks realized using VisualDSP++ 4.5 environment with Software Development Kit 2.01. Aspects of the floating-point processing are analyzed using Sharc and TigerSharc processors.","PeriodicalId":274617,"journal":{"name":"Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130375515","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
Median predictor-based lossless video compression algorithm for IR image sequences 基于中值预测的红外图像序列无损视频压缩算法
Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007 Pub Date : 2007-09-01 DOI: 10.14429/DSJ.59.1507
R. Saran, H. B. Srivastava, A. Kumar
{"title":"Median predictor-based lossless video compression algorithm for IR image sequences","authors":"R. Saran, H. B. Srivastava, A. Kumar","doi":"10.14429/DSJ.59.1507","DOIUrl":"https://doi.org/10.14429/DSJ.59.1507","url":null,"abstract":"Lossless image compression has long been recognized as an important need for several applications such as medical imaging, storage of critical IR image sequences and remote sensing. In this paper, we propose a simple, fast and easy to realizable-on-hardware lossless video compression algorithm that is well suited for IR imageries. Context based median predictor is used for prediction of reference pixels. Three neighboring pixels are used as context for prediction. Interframe coding is performed by encoding the redundant pixels in an efficient way, using one bit code. Finally the arithmetic coder is used as entropy coding. The proposed algorithm is able to operate in image compression mode as well as video compression mode. The proposed MPLVC (Median Predictor based Lossless Video Compression) algorithm is compared with JPEG-LS (Joint Pictures Experts Group-Lossless) and FELICS (Fast and Efficient Lossless Image Compression System) for compression performance. The results demonstrate that proposed algorithm is superior in encoding rate with added advantage in simplicity and ease in realization on hardware.","PeriodicalId":274617,"journal":{"name":"Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131140708","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: 6
Digital complex sinusoidal osciliators with outputs in quadrature 具有正交输出的数字复正弦振荡器
Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007 Pub Date : 2007-09-01 DOI: 10.1109/SPA.2007.5903303
T. Krupski
{"title":"Digital complex sinusoidal osciliators with outputs in quadrature","authors":"T. Krupski","doi":"10.1109/SPA.2007.5903303","DOIUrl":"https://doi.org/10.1109/SPA.2007.5903303","url":null,"abstract":"In the paper a novel method of designing of a digital complex sinusoidal oscillator is presented and its properties are discussed. Next, the proposed method is used to design an oscillator with two sinusoidal waves of the same frequency and amplitude but of π/2 phase difference between them. A new realization of the oscillator is proposed and purity of the signals generated in floating-point in the MATLAB environment has been analyzed.","PeriodicalId":274617,"journal":{"name":"Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117132010","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
Farrow structure for complex digital Hilbert filter of low complexity 低复杂度复杂数字希尔伯特滤波器的法罗结构
Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007 Pub Date : 2007-09-01 DOI: 10.1109/SPA.2007.5903306
E. Hermanowicz, A. Paruzel
{"title":"Farrow structure for complex digital Hilbert filter of low complexity","authors":"E. Hermanowicz, A. Paruzel","doi":"10.1109/SPA.2007.5903306","DOIUrl":"https://doi.org/10.1109/SPA.2007.5903306","url":null,"abstract":"In this paper we analyze the complexity of Hilbert Transform Filters (HTF) composed of two Variable Fractional Delay Filters Rotated (VFDR). HTF combines both Hilbertian and fractional delay filtering in one step. One of the most important advantages of this system lies in the usage of a Farrow structure, which allows on-line tuning of filter characteristics. To reduce the complexity of designed filter we employ the symmetry of the coefficients representing the impulse response and ability to share the delay elements within the branch filters and we use the same filters in both real and imaginary part of the system.","PeriodicalId":274617,"journal":{"name":"Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127952035","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
Reduction of numerical head model for calculation of Head-Related Transfer Function 简化了计算水头相关传递函数的数值水头模型
Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007 Pub Date : 2007-09-01 DOI: 10.1109/SPA.2007.5903322
P. Plaskota, A. Dobrucki
{"title":"Reduction of numerical head model for calculation of Head-Related Transfer Function","authors":"P. Plaskota, A. Dobrucki","doi":"10.1109/SPA.2007.5903322","DOIUrl":"https://doi.org/10.1109/SPA.2007.5903322","url":null,"abstract":"Measuring the Head-Related Transfer Function (HRTF) is an efficient method in taking the influence of human body on sound spectrum into consideration. The data base used in reproduction of the sound source position is built using the measurement results. The base is individual for each human, which makes it impossible to make a versatile base for all listeners. In this paper a numerical model of artificial head and its reduction is presented. The model allows to determine the value of HRTF without the measurements making. A method which is often used to determine the acoustical field parameters is the boundary element method, which was used to calculate the values of HRTF in this work.","PeriodicalId":274617,"journal":{"name":"Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007","volume":"15 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132374330","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
LDPC code optimization for diversity reception and turbo equalization LDPC代码优化的分集接收和涡轮均衡
Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007 Pub Date : 2007-09-01 DOI: 10.1109/SPA.2007.5903301
T. Schorr, M. Matuszak, W. Sauer-Greff, R. Urbansky
{"title":"LDPC code optimization for diversity reception and turbo equalization","authors":"T. Schorr, M. Matuszak, W. Sauer-Greff, R. Urbansky","doi":"10.1109/SPA.2007.5903301","DOIUrl":"https://doi.org/10.1109/SPA.2007.5903301","url":null,"abstract":"Iterative “turbo” decoding of parallel or serial concatenated convolutional codes (CC) allows for a performance close to Shannon's channel capacity limit. Whereas “turbo” equalization (TE) for intersymbol interference (ISI) channels corresponds to serial concatenation, we show that the turbo decoding principle for parallel concatenation can be extended to a diversity receiver concept. “Turbo diversity” outperforms maximum-ratio combining (MRC) in forward error correction (FEC) encoded broadcast systems like “Digital Radio Mondiale” (DRM). In addition, we apply low-density parity-check (LDPC) codes instead of CC to turbo equalization and to turbo diversity, where an LDPC code design using fitted extrinsic information transfer (EXIT) functions is applied to optimize the system performance.","PeriodicalId":274617,"journal":{"name":"Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007","volume":"267 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114458481","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
Pitch estimation of narrowband-filtered speech signal using Instantaneous Complex Frequency 基于瞬时复频率的窄带滤波语音信号基音估计
Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007 Pub Date : 2007-09-01 DOI: 10.1109/SPA.2007.5903318
T. Bandurski, L. Hamerski, M. Papaj, A. Paruzel, K. Swider
{"title":"Pitch estimation of narrowband-filtered speech signal using Instantaneous Complex Frequency","authors":"T. Bandurski, L. Hamerski, M. Papaj, A. Paruzel, K. Swider","doi":"10.1109/SPA.2007.5903318","DOIUrl":"https://doi.org/10.1109/SPA.2007.5903318","url":null,"abstract":"In this paper we propose a novel method of pitch estimation, based on Instantaneous Complex Frequency (ICF). New interactive algorithm for analysis of ICF of speech signal is presented. Obtained results are compared with commonly used methods to prove its accuracy and connection between ICF and pitch, particularly for narrowband-filtered speech signal.","PeriodicalId":274617,"journal":{"name":"Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125970052","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
Interpolation of complex dynamic trajectory for hand-written signature verification 手写签名验证的复杂动态轨迹插值
Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007 Pub Date : 2007-09-01 DOI: 10.1109/SPA.2007.5903298
E. Hermanowicz, M. Papaj
{"title":"Interpolation of complex dynamic trajectory for hand-written signature verification","authors":"E. Hermanowicz, M. Papaj","doi":"10.1109/SPA.2007.5903298","DOIUrl":"https://doi.org/10.1109/SPA.2007.5903298","url":null,"abstract":"In the paper the problem of complex trajectory interpolation for hand-written signature recognition is analyzed. Usefulness of interpolation as an unification component for further comparison of signatures as well as for extraction of different representations of the trajectory is discussed and illustrated using examples of collected signatures.","PeriodicalId":274617,"journal":{"name":"Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007","volume":"1 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113955745","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
Design of two-channel linear-phase fir biorthogonal filter banks 双通道线性相位fir双正交滤波器组的设计
Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007 Pub Date : 2007-09-01 DOI: 10.1109/SPA.2007.5903311
F. Wysocka-Schillak
{"title":"Design of two-channel linear-phase fir biorthogonal filter banks","authors":"F. Wysocka-Schillak","doi":"10.1109/SPA.2007.5903311","DOIUrl":"https://doi.org/10.1109/SPA.2007.5903311","url":null,"abstract":"In the paper, a new method for the design of two-channel linear-phase biorthogonal FIR filter banks is presented. The method is based on the trade-off between obtaining the equiripple reconstruction error and satisfying other additional requirements. The filter bank design problem is solved by means of its transformation into an equivalent multicriterion optimization problem. Two design examples are given to illustrate the usefulness of the proposed technique.","PeriodicalId":274617,"journal":{"name":"Signal Processing Algorithms, Architectures, Arrangements, and Applications SPA 2007","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114895424","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：481959085
Book学术官方微信