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2004 12th European Signal Processing Conference最新文献

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The optimal detector for a wideband noise impulse 宽带噪声脉冲的最佳检测器
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/zenodo.38338
P. Sergey, K. Vladimir
{"title":"The optimal detector for a wideband noise impulse","authors":"P. Sergey, K. Vladimir","doi":"10.5281/zenodo.38338","DOIUrl":"https://doi.org/10.5281/zenodo.38338","url":null,"abstract":"In this paper we discuss the problem of wideband noise impulse sequence detection. The structure of the optimal detector has been proposed and error detection probabilities have been estimated.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"31 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":"127644139","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 gait as a biometric: Progress and prospects 步态生物识别研究进展与展望
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38700
M. Nixon, J. Carter
{"title":"On gait as a biometric: Progress and prospects","authors":"M. Nixon, J. Carter","doi":"10.5281/ZENODO.38700","DOIUrl":"https://doi.org/10.5281/ZENODO.38700","url":null,"abstract":"There is increasing interest in automatic recognition by gait given its unique capability to recognize people at a distance when other biometrics are obscured. Application domains are those of any noninvasive biometric, but with particular advantage in surveillance scenarios. Its recognition capability is supported by studies in other domains such as medicine (biomechanics), mathematics and psychology which also suggest that gait is unique. Further, examples of recognition by gait can be found in literature, with early reference by Shakespeare concerning recognition by the way people walk. Many of the current approaches confirm the early results that suggested gait could be used for identification, and now on much larger databases. This has been especially influenced by DARPA's Human ID at a Distance research program with its wide scenario of data and approaches. Gait has benefited from the developments in other biometrics and has led to new insight particularly in view of covariates. Equally, gait-recognition approaches concern extraction and description of moving articulated shapes and this has wider implications than just in biometrics.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"45 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":"131749797","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: 12
Transrating of MPEG-2 coded video via requantization with optimal trellis-based DCT coefficients modification 基于最优栅格DCT系数修正的MPEG-2编码视频的需求化翻译
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38587
M. Lavrentiev, D. Malah
{"title":"Transrating of MPEG-2 coded video via requantization with optimal trellis-based DCT coefficients modification","authors":"M. Lavrentiev, D. Malah","doi":"10.5281/ZENODO.38587","DOIUrl":"https://doi.org/10.5281/ZENODO.38587","url":null,"abstract":"Requantization is one of the tools for bit-rate reduction of pre-encoded video to adapt it to various network bandwidth constraints. Several recent works propose using Lagrangian optimization to find the optimal quantization step for each coded macro-block, to meet a desired rate at minimum distortion. In this paper we propose to extend the Lagrangian optimization procedure by allowing the modification of quantized coefficients values, including setting their values to zero, in addition to quantization step-size selection. Coefficient value modification and quantization step-size selection are optimally done using a low complexity trellis-based procedure. The proposed requantization algorithm provides higher PSNR values than the Lagrangian-based optimization method that only handles the selection of quantization steps, and still does not exceed considerably its complexity.","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":"125541111","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 mode identification system for a reconfigurable terminal using Time Frequency analysis and a non-parametric classifier 一种采用时频分析和非参数分类器的可重构终端模式识别系统
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38477
M. Gandetto, M. Guainazzo, A. Giardi, C. Regazzoni
{"title":"A mode identification system for a reconfigurable terminal using Time Frequency analysis and a non-parametric classifier","authors":"M. Gandetto, M. Guainazzo, A. Giardi, C. Regazzoni","doi":"10.5281/ZENODO.38477","DOIUrl":"https://doi.org/10.5281/ZENODO.38477","url":null,"abstract":"The use of Time Frequency (TF) analysis is proposed as signal processing technique combined with a pattern recognition approach, for identifying the transmission modes in indoor wireless environment with a reconfigurable mobile terminal based on Software Radio techniques. In particular, a Software Radio device is considered aiming at the identification of the presence of two co-existent communication modes as Bluetooth, based on Frequency Hopping - Code Division Multiple Access (FH-CDMA), and IEEE WLAN 802.11b, based on Direct Sequence - Code Division Multiple Access (DS-CDMA). A pattern recognition approach will be presented, where TF analysis is employed for feature extraction, and a multi hypotheses k nearest neighbors (k-NN) non parametric classifier is used. Results in terms of error classification probability, expressed as relative error frequency, will be provided.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"57 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":"116131114","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
Polynomial phase signal processing via warped high-order ambiguity function 利用扭曲高阶模糊函数处理多项式相位信号
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38311
C. Ioana, Cédric Cornu, A. Quinquis
{"title":"Polynomial phase signal processing via warped high-order ambiguity function","authors":"C. Ioana, Cédric Cornu, A. Quinquis","doi":"10.5281/ZENODO.38311","DOIUrl":"https://doi.org/10.5281/ZENODO.38311","url":null,"abstract":"The high-order ambiguity function (HAF) was introduced for the estimation of polynomial-phase signals (PPS). Currently the HAF suffers from noise-masking effects and from the appearance of undesired cross terms in the presence of multi-components PPS. The multi-lag product HAF (PHAF) concept was then proposed as a way to improve the performances of the HAF. Nevertheless, the “optimal” choice of lag sets implies many tries, undesirable in an automatically signal processing context. On the other hand, multiplying many mlHAFs might lead to abnormal results. In this paper we propose a warped-based algorithm in order to accurately estimate the coefficients of the polynomial phase. We compute the HAF for different lag values. Knowing the variation law of the frequency with respect to these values, we can construct a warping function leading to a linear dependence between the HAF maxima coordinates and the lag set.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"14 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":"116654488","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: 18
Design of asymmetrical reversible variable-length codes and the comparison of their robustnesses 非对称可逆变长码的设计及其鲁棒性比较
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38457
Wook-Hyun Jeong, Young-Suk Yoon, Yo-Sung Ho
{"title":"Design of asymmetrical reversible variable-length codes and the comparison of their robustnesses","authors":"Wook-Hyun Jeong, Young-Suk Yoon, Yo-Sung Ho","doi":"10.5281/ZENODO.38457","DOIUrl":"https://doi.org/10.5281/ZENODO.38457","url":null,"abstract":"The reversible variable length code (RVLC) has been proposed as one of the error resilience tools owing to recovery capability for corrupted video streams. Although the asymmetrical RVLC requires separate two code tables, it shows better coding efficiency due to more flexible codeword assignment. Still, existing design methods for asymmetrical RVLCs are inefficient. In this paper, we propose a new design algorithm for the asymmetrical RVLC using the property of the Huffman code and the average length function. In addition, comparing the robustness of RVLCs shows that proposed efficient asymmetrical RVLC does not lose error-correcting property significantly.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"23 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":"125277169","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
Efficient group delay equalization of discrete-time IIR filters 离散IIR滤波器的有效群延迟均衡
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38416
M. F. Quélhas, A. Petraglia, M. R. Petraglia
{"title":"Efficient group delay equalization of discrete-time IIR filters","authors":"M. F. Quélhas, A. Petraglia, M. R. Petraglia","doi":"10.5281/ZENODO.38416","DOIUrl":"https://doi.org/10.5281/ZENODO.38416","url":null,"abstract":"A novel methodology for estimating the optimum pole allocation of allpass group delay equalizers with real coefficients is introduced. A computer-aided algorithm, whose input is this initial estimate, is developed. Results verifying the effectiveness of the proposed approach are presented and compared to other procedures described in the literature.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"6 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":"125288324","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: 16
Robust pitch extraction in pathological voice based on wavelet and cepstrum 基于小波和倒谱的病理语音鲁棒基音提取
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38378
Weiping Hu, Xiuxin Wang, P. Gómez
{"title":"Robust pitch extraction in pathological voice based on wavelet and cepstrum","authors":"Weiping Hu, Xiuxin Wang, P. Gómez","doi":"10.5281/ZENODO.38378","DOIUrl":"https://doi.org/10.5281/ZENODO.38378","url":null,"abstract":"This paper proposes a new method for pitch extraction, especially useful for pathological voice, by using the wavelet transform in the frequency domain, and disregarding the upper half signal. In this way the benefits of discrete dyadic wavelet transform are combined and the performance of the cepstral method is dramatically improved. This method can also be used for robust pitch extraction in noisy environments.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"24 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":"132274707","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
Robust detection of QRS complex using klauder wavelets 基于klauder小波的QRS复合体鲁棒检测
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38634
P. Ravier, O. Buttelli
{"title":"Robust detection of QRS complex using klauder wavelets","authors":"P. Ravier, O. Buttelli","doi":"10.5281/ZENODO.38634","DOIUrl":"https://doi.org/10.5281/ZENODO.38634","url":null,"abstract":"The level of performance as well as the timing accuracy in the detection of QRS complex may be crucial for further nonlinear biomedical signal processing applied on the derived RR time series. By studying the fatigue process during exercise, a highly non-stationary noise is expected as well as time-varying QRS complex morphology. In difficult recording conditions, the QRS complex detectors have to be extremely robust but also have to meet high performance requirements. To achieve this aim, a “smoothed” matched filtering is realized on specific wavelet coefficient patterns in the time-scale plane. The detection is enhanced using the family of Klauder wavelets which demonstrate similarities to ECG waveforms. The algorithm only needs to capture a correct QRS complex snapshot before launching the detection.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"6 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":"115366223","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: 9
Adaptive listening room compensation for spatial audio systems 空间音频系统的自适应听音室补偿
2004 12th European Signal Processing Conference Pub Date : 2004-09-06 DOI: 10.5281/ZENODO.38536
S. Spors, H. Buchner, R. Rabenstein
{"title":"Adaptive listening room compensation for spatial audio systems","authors":"S. Spors, H. Buchner, R. Rabenstein","doi":"10.5281/ZENODO.38536","DOIUrl":"https://doi.org/10.5281/ZENODO.38536","url":null,"abstract":"Various kinds of spatial audio systems have been developed that go beyond the current 5.1 standard. Although the approaches are different, they are capable of delivering acoustic immersion to a large number of listeners simultaneously without restricting their activities by headphones, trackers, or alike. In particular, the sweet spot limitation well known from current consumer market systems is repealed. However, these attractive properties could only be realized in listening rooms without any noticeable reverberation. Otherwise, measures have to be taken for the digital compensation of wall reflections. This contribution presents an adaptive compensation technique which is based on the decomposition of sound fields into plane waves. Various advantages are discussed, e.g. improved multichannel adaptation by decoupling of the compensation filters. Finally, results for a specific spatial reproduction method (wave field synthesis) are presented.","PeriodicalId":347658,"journal":{"name":"2004 12th European Signal Processing Conference","volume":"51 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":"115679073","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: 13
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