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2004 12th European Signal Processing Conference最新文献

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Removal of CPR artifacts in ventricular fibrillation ECG by local coherent line removal 局部相干线去除心室颤动心电图中心肺复苏术伪影
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38697
Andreas Klotz, A. Amann, H. Feichtinger
{"title":"Removal of CPR artifacts in ventricular fibrillation ECG by local coherent line removal","authors":"Andreas Klotz, A. Amann, H. Feichtinger","doi":"10.5281/ZENODO.38697","DOIUrl":"https://doi.org/10.5281/ZENODO.38697","url":null,"abstract":"We extend a method described by Sintes/Schultz (1998) for the removal of coherent signals in stationary broadband noise to the case of non-stationary broadband noise by applying time-frequency methods. The new method is applied to the removal of cardiopulmonary resuscitation (CPR) artifacts in the ECG of domestic pig suffering from ventricular fibrillation (VF). The excellent filtering properties and the possibility of real-time signal processing might have applications in emergency medical settings.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132332084","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
Finite word length analysis of the radix-22 FFT 基数22 FFT的有限字长分析
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38166
H. Rey, C. Galarza
{"title":"Finite word length analysis of the radix-22 FFT","authors":"H. Rey, C. Galarza","doi":"10.5281/ZENODO.38166","DOIUrl":"https://doi.org/10.5281/ZENODO.38166","url":null,"abstract":"In this paper, we analyze the quantization error effects of the radix-22 FFT algorithm. We propose per tone models for the error power. This is a different approach from the common choice of a maximum or mean value over the spectrum. In particular, we treat three different errors: due to input quantization, due to coefficient quantization and due to quantization after a multiplication. This analysis is applied to a DMT scheme. Simulation results agree with the theoretical predictions.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132457133","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
Retransmission strategies for optimized JPEG 2000 image transmission in wireless environment 无线环境下优化JPEG 2000图像传输的重传策略
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38310
Marco Grangetto, E. Magli, G. Olmo
{"title":"Retransmission strategies for optimized JPEG 2000 image transmission in wireless environment","authors":"Marco Grangetto, E. Magli, G. Olmo","doi":"10.5281/ZENODO.38310","DOIUrl":"https://doi.org/10.5281/ZENODO.38310","url":null,"abstract":"Transmission of images and video over lossy packet networks is known to pose severe technical challenges; FEC and ARQ are often used to make the transmission more robust towards potential data losses. In this paper we investigate ARQ strategies aimed at optimizing the transmission of progressive codestreams over wireless environments characterized by packet losses. The analysis is specifically tailored to the JPEG 2000 family of standards, and considers Part 1 and 3 for image and video compression, and Part 11 for additional error protection tools. We show that ad-hoc retransmission strategies significantly outperform basic ARQ schemes, providing improved end-to-end image and video quality.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130036793","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
Parameter transmission via ROI in JPEG2000 for variable-coefficient invertible deinterlacing JPEG2000中可变系数可逆去交错的ROI参数传输
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38275
T. Ishida, J. Uchita, S. Muramatsu, H. Kikuchi, T. Kuge
{"title":"Parameter transmission via ROI in JPEG2000 for variable-coefficient invertible deinterlacing","authors":"T. Ishida, J. Uchita, S. Muramatsu, H. Kikuchi, T. Kuge","doi":"10.5281/ZENODO.38275","DOIUrl":"https://doi.org/10.5281/ZENODO.38275","url":null,"abstract":"A coefficient-parameter embedding method is presented for invertible deinterlacing with variable coefficients in the application to Motion-JPEG2000 (MJP2). Invertible deinterlacing, which the authors have developed before, can be used as a preprocess of frame-based video codec, such as MJP2, for interlaced videos. When the conventional field-interleaving is used instead, comb-tooth artifacts appear around edges of moving objects. On the other hand, the invertible deinterlacing technique allows us to suppress the comb-tooth artifacts and also to recover an original picture on demand. As previous works, the authors have developed a variable coefficient scheme with a motion detector, which realizes adaptability to local characteristics of given pictures. When applying this deinterlacing technique to an image codec, however, it is required to send coefficient parameters to receivers for original picture recovery. This work proposes a parameter-embedding technique and constructs a standard stream which consists both of picture data and parameters. The parameters are embedded into the first LH subband of the wavelet domain through the ROI (region of interest) function of JPEG2000, while maintaining the capability of comb-tooth suppression and quality recovery.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130107261","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 multi-modulation schemes to increase the rate of space-time block codes 提高空时分组码速率的多调制方案研究
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38170
Le Chung Tran, T. Wysocki, J. Seberry, A. Mertins
{"title":"On multi-modulation schemes to increase the rate of space-time block codes","authors":"Le Chung Tran, T. Wysocki, J. Seberry, A. Mertins","doi":"10.5281/ZENODO.38170","DOIUrl":"https://doi.org/10.5281/ZENODO.38170","url":null,"abstract":"In this paper, multi-modulation schemes (MMSs) are employed to increase the rate of our two new Complex Orthogonal Designs (CODs) proposed for eight transmit antennas, namely C1 and C2, corresponding to the Amicable Orthogonal Designs (AODs) (8;1,1,2,2;1,1,2,2) and (8;1,1,1,4;1,1,1,4), respectively. In addition, the optimal inter-symbol power allocation in the proposed codes in single modulation as well as in MMSs in Additive White Gaussian Noise (AWGN) channels is examined. It turns out that, in some modulation schemes, equal power transmission per each symbol time slot is not only optimal from the technical point of view, but also optimal in terms of achieving the best symbol error probability. The principles examining the MMSs in order to increase the rate of space-time block codes (STBCs) and the optimal power allocation for multi-modulated STBCs mentioned here can be generalized for STBCs of other orders without any difficulty.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134434320","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
Charaterization of a dispersive system using quadratic time-frequency representations 用二次时频表示的色散系统的表征
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38327
Jérôme Bernard, S. Montrésor, Jean-Hugh Thomas, C. Depollier
{"title":"Charaterization of a dispersive system using quadratic time-frequency representations","authors":"Jérôme Bernard, S. Montrésor, Jean-Hugh Thomas, C. Depollier","doi":"10.5281/ZENODO.38327","DOIUrl":"https://doi.org/10.5281/ZENODO.38327","url":null,"abstract":"Quadratic time-frequency representations (QTFR) to characterize dispersive media are interesting because of their capacity to concentrate the energy of the signal in a two-dimensional representation plane. In this work, some distributions of a special class of QTFR (Pk-Bertrand) are used to analyse non-stationary signals passing through dispersive systems like porous media. The entropy of Renyi is used to determine the well matched distribution and therefore to evaluate the group delay law of the analysed signal.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134309267","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
Audio clip classification using LP residual and neural networks models 基于LP残差和神经网络模型的音频片段分类
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38479
A. Bajpai, B. Yegnanarayana
{"title":"Audio clip classification using LP residual and neural networks models","authors":"A. Bajpai, B. Yegnanarayana","doi":"10.5281/ZENODO.38479","DOIUrl":"https://doi.org/10.5281/ZENODO.38479","url":null,"abstract":"In this paper, we demonstrate the presence of audio-specific information in the linear prediction (LP) residual, obtained after removing the predictable part of the signal. We emphasize the importance of information present in the LP residual of audio signals, which if added to the spectral information, can give a better performing system. Since it is difficult to extract information from the residual using known signal processing algorithms, neural networks (NN) models are proposed. In this paper, autoassociative neural networks (AANN) models are used to capture the audio-specific information from the LP residual of signals. Multilayer feedforward neural networks (MLFFNN) models or multilayer perceptron (MLP) are used to classify the audio data using the audio-specific information captured by AANN models.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134324405","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
Comparison of affine-invariant local detectors and descriptors 仿射不变局部检测器与描述子的比较
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38605
K. Mikolajczyk, C. Schmid
{"title":"Comparison of affine-invariant local detectors and descriptors","authors":"K. Mikolajczyk, C. Schmid","doi":"10.5281/ZENODO.38605","DOIUrl":"https://doi.org/10.5281/ZENODO.38605","url":null,"abstract":"In this paper we summarize recent progress on local photometric invariants. The photometric invariants can be used to find correspondences in the presence of significant viewpoint changes. We evaluate the performance of region detectors and descriptors. We compare several methods for detecting affine regions [4, 9, 11, 18, 17]. We evaluate the repeatability of the detected regions, the accuracy of the detectors and the invariance to geometric as well as photometric image transformations. Furthermore, we compare several local descriptors [3, 5, 8, 14, 19]. The local descriptors are evaluated in terms of two properties: robustness and distinctiveness. The evaluation is carried out for different image transformations and scene types. We observe that the ranking of the detectors and descriptors remains the same regardless the scene type or image transformation.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125240303","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: 56
On the design of low delay nearly-PR and PR FIR cosine modulated filter banks having approximate cosine-roll transition band 具有近似余弦滚过渡带的低延迟近PR和PR FIR余弦调制滤波器组的设计
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38686
S. C. Chan, S. Yin
{"title":"On the design of low delay nearly-PR and PR FIR cosine modulated filter banks having approximate cosine-roll transition band","authors":"S. C. Chan, S. Yin","doi":"10.5281/ZENODO.38686","DOIUrl":"https://doi.org/10.5281/ZENODO.38686","url":null,"abstract":"An efficient method for designing a class of nearly perfect reconstruction (NPR) or perfect reconstruction (PR) cosine modulated filter banks (CMFBs) with prototype filters having an approximate cosine-rolloff transition band is presented. The NPR CMFBs in (Vaidyanathan, 1992) and (Koilpillai and Vaidyanathan, 1991) is first generalized to include low-delay CMFBs. It is shown that a prototype filter with cosine-rolloff transition band will automatically satisfy the flatness condition required by an NPR CMFB. This allows us to formulate the design problem as a convex minimax or least squares problem, and its optimal solution can be solved by the Remez exchange algorithm or more sophisticated semidefinite programming (SDP) method. By using the NPR CMFB so obtained as the initial guess to the nonlinear constrained optimization algorithm such as the Fmincon function of MATLAB, high quality low-delay PR CMFBs can readily be obtained. CMFBs with arbitrary-length linear-phase or low-delay prototype filters can also be obtained readily by this method. Design examples and comparison with existing methods are provided to illustrate the effectiveness of the proposed method.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130737974","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: 7
Acoustic echo cancellation for conference systems 会议系统的回声消除
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38701
A. Sugiyama, A. Hirano, K. Nakayama
{"title":"Acoustic echo cancellation for conference systems","authors":"A. Sugiyama, A. Hirano, K. Nakayama","doi":"10.5281/ZENODO.38701","DOIUrl":"https://doi.org/10.5281/ZENODO.38701","url":null,"abstract":"An overview on acoustic echo cancellation for conference systems is presented. Design considerations for acoustic echo cancelers used in conference systems are first discussed. As one of the most challenging topics, multichannel acoustic echo cancellation is highlighted. The uniqueness problem is explained that is specific to multichannel echo cancellation, followed by solutions proposed to date.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132853722","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: 7
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