发布求助
文献互助 智能选刊 最新文献

2011 17th International Conference on Digital Signal Processing (DSP)最新文献

筛选
英文 中文
An application of sparse inversion on the calculation of the inverse data space of geophysical data 稀疏反演在地球物理反演数据空间计算中的应用
2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004886
C. Saragiotis, P. Doulgeris, E. Verschuur
{"title":"An application of sparse inversion on the calculation of the inverse data space of geophysical data","authors":"C. Saragiotis, P. Doulgeris, E. Verschuur","doi":"10.1109/ICDSP.2011.6004886","DOIUrl":"https://doi.org/10.1109/ICDSP.2011.6004886","url":null,"abstract":"Multiple reflections as observed in seismic reflection measurements often hide arrivals from the deeper target reflectors and need to be removed. The inverse data space provides a natural separation of primaries and surface-related multiples, as the surface multiples map onto the area around the origin while the primaries map elsewhere. However, the calculation of the inverse data is far from trivial as theory requires infinite time and offset recording. Furthermore regularization issues arise during inversion. We perform the inversion by minimizing the least-squares norm of the misfit function and by constraining the ℓ1 norm of the solution, being the inverse data space. In this way a sparse inversion approach is obtained. We show results on field data with an application to surface multiple removal.","PeriodicalId":360702,"journal":{"name":"2011 17th International Conference on Digital Signal Processing (DSP)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125612465","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
Three-dimensional spatial correlation characteristics of concentric ring antenna array systems 同心环形天线阵列系统的三维空间相关特性
2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004941
Ju-hong Lee, Shou-I Li
{"title":"Three-dimensional spatial correlation characteristics of concentric ring antenna array systems","authors":"Ju-hong Lee, Shou-I Li","doi":"10.1109/ICDSP.2011.6004941","DOIUrl":"https://doi.org/10.1109/ICDSP.2011.6004941","url":null,"abstract":"This paper investigates the three dimensional (3-D) spatial correlation characteristics of uniform concentric ring arrays (UCRAs) deployed in antenna systems. Closed-form formulas of the 3-D spatial correlation functions are derived. UCRAs with two different geometric structures and uniform distribution angular energy distribution are considered. It is found that the 3-D spatial correlation is a function of antenna sensor spacing, the geometric structure of a UCRA. Simulation results are presented for illustration and comparison.","PeriodicalId":360702,"journal":{"name":"2011 17th International Conference on Digital Signal Processing (DSP)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122273529","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
Joint classification of panchromatic and multispectral images by multiresolution fusion through Markov random fields and graph cuts 基于马尔可夫随机场和图切割的多分辨率融合全色和多光谱图像联合分类
2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6005014
G. Moser, S. Serpico
{"title":"Joint classification of panchromatic and multispectral images by multiresolution fusion through Markov random fields and graph cuts","authors":"G. Moser, S. Serpico","doi":"10.1109/ICDSP.2011.6005014","DOIUrl":"https://doi.org/10.1109/ICDSP.2011.6005014","url":null,"abstract":"The problem of the supervised classification of multiresolution images, composed of a higher-resolution panchromatic channel and of several coarser-resolution multispectral channels, is addressed in this paper by proposing a novel contextual method based on Markov random fields. The method iteratively exploits a linear mixture model for the relationships between data at different resolutions and a graph-cut approach to Markovian energy minimization to generate a contextual classification map at the highest resolution available in the input data set. The estimation of the parameters of the method is carried out by extending recently proposed techniques based on the expectation-maximization and Ho-Kashyap's algorithms. The method is experimentally validated with semisimulated and real data involving both IKONOS and Landsat-7 ETM+ images and the results are compared with those generated by a previous Bayesian multiresolution classification technique.","PeriodicalId":360702,"journal":{"name":"2011 17th International Conference on Digital Signal Processing (DSP)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117289188","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: 8
A low-complexity closed-loop H.264/AVC to quality-scalable SVC transcoder 一种低复杂度闭环H.264/AVC转码器
2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004890
S. V. Leuven, J. D. Cock, G. Wallendael, R. Walle, R. Garrido-Cantos, José Luis Martínez, P. Cuenca
{"title":"A low-complexity closed-loop H.264/AVC to quality-scalable SVC transcoder","authors":"S. V. Leuven, J. D. Cock, G. Wallendael, R. Walle, R. Garrido-Cantos, José Luis Martínez, P. Cuenca","doi":"10.1109/ICDSP.2011.6004890","DOIUrl":"https://doi.org/10.1109/ICDSP.2011.6004890","url":null,"abstract":"Efficient broadcasting of video content to end-users often requires one or more adaptations of the bitstream, due to varying network conditions and different end-user device characteristics. To ensure a high quality of experience for all end-users, the highest possible quality of the bitstream and, contradictory, connectivity for low bandwidth devices should be guaranteed. H.264/AVC allows only a single (high quality) bitstream. Therefore, the lower bit rates need adaptations of the input bitstream, requiring processing power, delay and energy. By transcoding the existing H.264/AVC bitstream to SVC, bit rate adaptations can be efficiently performed in the network. Consequently, only the cost of one transcoding step is required. To ensure optimal transcoding, we present a low-complexity solution for transcoding H.264/AVC bitstreams to SVC. The proposed system can be applied in a broadcasting environment, since less than 10% of the normal transcoding complexity is needed, while coding efficiency is maintained.","PeriodicalId":360702,"journal":{"name":"2011 17th International Conference on Digital Signal Processing (DSP)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131897938","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: 8
Motion compensation as sparsity-aware decoding in compressive video streaming 压缩视频流中稀疏感知解码的运动补偿
2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6005006
Y. Liu, Ming Li, Kanke Gao, D. Pados
{"title":"Motion compensation as sparsity-aware decoding in compressive video streaming","authors":"Y. Liu, Ming Li, Kanke Gao, D. Pados","doi":"10.1109/ICDSP.2011.6005006","DOIUrl":"https://doi.org/10.1109/ICDSP.2011.6005006","url":null,"abstract":"We consider a video transmission system where the transmitter performs merely direct compressive sensing with no other forms of encoding/processing and the burden of quality video sequence reconstruction falls solely on the receiver side. We show that effective implicit motion compensation can be carried out at the receiver/decoder via iterative sparsity-aware recovery on adaptively forward-backward estimated Karhunen-Loève bases. Experiments illustrate these developments.","PeriodicalId":360702,"journal":{"name":"2011 17th International Conference on Digital Signal Processing (DSP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121893340","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
Music pseudo-bispectrum detects ECG ischaemia 音乐伪双谱检测心电图缺血
2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004869
W. Zgallai
{"title":"Music pseudo-bispectrum detects ECG ischaemia","authors":"W. Zgallai","doi":"10.1109/ICDSP.2011.6004869","DOIUrl":"https://doi.org/10.1109/ICDSP.2011.6004869","url":null,"abstract":"Up to 30% of patients with suspected or known coronary artery disease are unable to perform an adequate exercise stress test due to poor physical condition. It is beneficial to be able to detect ischaemic heart diseases when these do not manifest themselves as ST depression or elevation. In this paper, a subspace-based MUSIC algorithm is used to examine normal and abnormal episodes from the same patient. The analysis reveals abnormal peaks in both of these episodes as opposed to the frequency analysis of normal episodes taken from normal records. Results presented include 46 records from the MIT-BIH databases. High resolution is obtained using the MUSIC algorithm compared to the maximum entropy method (MEM). The accuracy, sensitivity and specificity of the proposed algorithm are 82.8%, 87% and 90% respectively. This leads to the possibility of the detection of ischaemia without the need for an exercise test.","PeriodicalId":360702,"journal":{"name":"2011 17th International Conference on Digital Signal Processing (DSP)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125931529","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
An FPGA implementation and performance evaluation of the seed block cipher 种子分组密码的FPGA实现及性能评价
2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004926
P. Kitsos, A. Skodras
{"title":"An FPGA implementation and performance evaluation of the seed block cipher","authors":"P. Kitsos, A. Skodras","doi":"10.1109/ICDSP.2011.6004926","DOIUrl":"https://doi.org/10.1109/ICDSP.2011.6004926","url":null,"abstract":"An FPGA implementation of the 128-bit SEED block cipher is presented in this paper. The proposed architecture achieves high-speed with little hardware resources using feedback logic and inner pipeline with negative edge-triggered registers. In this way, the delay of the critical path is reduced, without increasing the latency of cipher execution. The proposed implementation reaches a data throughput of 369.6 Mbps at 46.2 MHz clock frequency. The design was coded using VHDL language and for the hardware implementation, the Xilinx Spartan-3A FPGA device was used.","PeriodicalId":360702,"journal":{"name":"2011 17th International Conference on Digital Signal Processing (DSP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128750539","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
A face image hashing method based on optimal linear transform under colored Gaussian noise assumption 彩色高斯噪声假设下基于最优线性变换的人脸图像哈希方法
2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004932
Ç. Karabat, Hakan Erdogan, M. K. Mihçak
{"title":"A face image hashing method based on optimal linear transform under colored Gaussian noise assumption","authors":"Ç. Karabat, Hakan Erdogan, M. K. Mihçak","doi":"10.1109/ICDSP.2011.6004932","DOIUrl":"https://doi.org/10.1109/ICDSP.2011.6004932","url":null,"abstract":"In this paper, we propose a novel face image hashing method based on an optimal linear transformation. In the proposed method, first, we apply a feature extraction method. Then, we define an optimal linear transformation matrix based on within-class covariance matrix which is the maximum likelihood estimate of the variations of the biometric data belonging to the same user. Next, we reduce the dimension of the feature vector by using this transform. Finally, we apply quantization and obtain a face image hash vector. We test the performance of the proposed method with AT&T and M2VTS face databases and compare the results with the random projection based biometric hashing methods. We perform the simulations by taking into account two scenarios: 1) Secret key is not known by attacker, 2) Attacker illegally acquires the secret key. The simulation results show the proposed method has better performance especially when the secret key has been compromised.","PeriodicalId":360702,"journal":{"name":"2011 17th International Conference on Digital Signal Processing (DSP)","volume":"1999 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128257063","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
A polycoherence-based ECG signal non-linearity detector 一种基于多相干的心电信号非线性检测器
2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004868
W. Zgallai
{"title":"A polycoherence-based ECG signal non-linearity detector","authors":"W. Zgallai","doi":"10.1109/ICDSP.2011.6004868","DOIUrl":"https://doi.org/10.1109/ICDSP.2011.6004868","url":null,"abstract":"This paper proposes a new algorithm to detect non-linearities in ECG signals and to determine the order of non-linearity. The ECG bispectrum is analysed and the bicoherence index is calculated to identify non-linearity. The diagonal slice of the polycoherence index of any order, calculated using the diagonal slice of the polyspectrum of the same order and the power spectrum, is proposed as an estimator. The possibility of higher-order non-linearities in ECG signals is investigated using these slices. Physiological and pathological cases have been studied. The analysis of the bispectrum and bicoherence index reveals tight quadratic interactions among frequencies in the region (0–20 Hz), which suggests the existence of non-linearities. The polyspectrum and polycoherence slices indicate the presence of higher-order phase-coupled harmonics, in the physiological cases, which is attributed to higher order non-linearities. Differences between physiological and pathological cases are assessed and a decrease in the non-linearity order could be correlated with pathological conditions.","PeriodicalId":360702,"journal":{"name":"2011 17th International Conference on Digital Signal Processing (DSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130075376","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
Post-processing for crosstalk cancellation in convolutive BSS outputs based on pitch frequency 基于基音频率的卷积BSS输出串扰消除后处理
2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004931
Hasti Shabani, T. Noohi, M. Kahaei
{"title":"Post-processing for crosstalk cancellation in convolutive BSS outputs based on pitch frequency","authors":"Hasti Shabani, T. Noohi, M. Kahaei","doi":"10.1109/ICDSP.2011.6004931","DOIUrl":"https://doi.org/10.1109/ICDSP.2011.6004931","url":null,"abstract":"We propose a novel method to determine crosstalk regions based on the pitch frequency in convolutive blind audio source separation. Since the same pitch frequency in a frame of BSS outputs represents one speaker talking in all separated speech signal, all signals except the speaker's signal contain the crosstalk in that frame. These frames are used in our post-processing algorithm to estimate the crosstalk. Simulation results show that the proposed algorithm successfully suppresses the crosstalk by improving the SIR of BSS outputs about 10.6 dB with adding no distortion to the separated signals.","PeriodicalId":360702,"journal":{"name":"2011 17th International Conference on Digital Signal Processing (DSP)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128896567","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
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：604180095
Book学术官方微信