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Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.最新文献

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Adaptive recovery of a noisy chirp: performance of the SSLMS algorithm 噪声啁啾的自适应恢复:SSLMS算法的性能
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1581050
M. Salman, M. Malik
{"title":"Adaptive recovery of a noisy chirp: performance of the SSLMS algorithm","authors":"M. Salman, M. Malik","doi":"10.1109/ISSPA.2005.1581050","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1581050","url":null,"abstract":"This paper investigates the ability of state space least mean square (SSLMS) algorithm to track a chirped signal buried in additive white Gaussian noise. The signal is a sinusoid whose frequency is drifting at a constant rate. After incorporating second order linear time varying state space model of the chirped sinusoid, SSLMS exhibits superior tracking performance over standard LMS & RLS and their known variants. The step size parameter plays an important role in this context. For various values of step size parameter, time average auto-correlation function (ACF) of prediction error is evaluated when responding to chirped signal. Whiteness of prediction error verifies excellent tracking by SSLMS.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127493174","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
Shift estimation method based fringe pattern profilometry and performance comparison 基于条纹轮廓术的偏移估计方法及性能比较
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1581075
Yingsong Hu, J. Xi, E. Li, J. Chicharo, Zongkai Yang
{"title":"Shift estimation method based fringe pattern profilometry and performance comparison","authors":"Yingsong Hu, J. Xi, E. Li, J. Chicharo, Zongkai Yang","doi":"10.1109/ISSPA.2005.1581075","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1581075","url":null,"abstract":"Abstract In this paper, we present and study two approaches to fringe pattern profilometry (FPP) technique. Based ongeneralized analysis model for fringe pattern profilometry (FPP), Inverse Function based Shift Estimation(IFSE) and Gradient-based Shift Estimation (GSE) are proposed to calculate the shift between the projectedand deformed fringe patterns. Further, computer simulations are utilized to compare the performancebetween these two methods. Meanwhile, we also compare these two algorithms with Phase Shift profilometry(PSP). It can be seen that both of these two shift estimation algorithms can significantly improve themeasurement accuracy when the fringe patterns are nonlinearly distorted. Publication Details This article was originally published as: Hu, Y, Xi, J, Li, E, Chicharo, J & Yang, Z, Shift estimation methodbased fringe pattern profilometry and performance comparison, Proceedings of the Eighth InternationalSymposium on Signal Processing and Its Applications, 28-31 August 2005, 2, 863-866. Copyright IEEE 2005","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127508131","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
A comparison of LSF and ISP representations for wideband LPC parameter coding using the switched split vector quantiser 比较LSF和ISP表示宽带LPC参数编码使用切换分裂矢量量化器
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1581008
Stephen So, K. Paliwal
{"title":"A comparison of LSF and ISP representations for wideband LPC parameter coding using the switched split vector quantiser","authors":"Stephen So, K. Paliwal","doi":"10.1109/ISSPA.2005.1581008","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1581008","url":null,"abstract":"In this paper, we apply the switched split vector quantiser (SSVQ) for coding short-term spectral envelope information in wideband speech coding to compare and contrast two LPC parameter representations: line spectral frequencies (LSFs) and immittance spectral pairs (ISPs). The SSVQ is the hybrid of a switch vector quantiser and split vector quantiser, which has been shown in previous studies to be more efficient, in terms of rate-distortion, as well as possessing lower computational complexity, than the split vector quantiser (SVQ). On the TIMIT database, the five-part SSVQ requires 43 and 44 bits/frame to transparently code LSFs and ISPs, respectively. This 1 bit/frame difference between LSFs and ISPs is also observed in five-part SVQ. The split-multistage vector quantiser (S-MSVQ) with MA predictor from the AMR-WB speech coder (ITU-T G.722.2) is also used as a basis of comparison where we find the SSVQ, which is a memoryless quantisation scheme, to be competitive at 46 bits/frame.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122726003","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
Redundant data elimination in independent component analysis 独立分量分析中冗余数据的消除
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1580188
Xianhua Liu, R. Randall
{"title":"Redundant data elimination in independent component analysis","authors":"Xianhua Liu, R. Randall","doi":"10.1109/ISSPA.2005.1580188","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1580188","url":null,"abstract":"Independent component analysis involves a lot of data in statistical calculations. This paper studies the model by examining which part of the data is essential and which part is redundant for defining the mixing system and proposes an idea called redundant data elimination. Statistical properties change in the direction of uniform distribution as redundant data are eliminated, yet the model still holds and the solution still exists. A theoretical explanation is given of the geometrical transformation of independent sources. The above reasoning is verified by separation experiment. It is shown that this idea can also improve model match for unsymmetrical sources.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123196866","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
Combination of non-linear filters in time and frequency domain 时域和频域的非线性滤波器组合
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1581041
I. Djurović, L. Stanković, V. Lukin
{"title":"Combination of non-linear filters in time and frequency domain","authors":"I. Djurović, L. Stanković, V. Lukin","doi":"10.1109/ISSPA.2005.1581041","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1581041","url":null,"abstract":"Classical non-linear filters (median, myriad, L-filters) are commonly used forfiltering of lowpass data embedded in impulse and mixed Gaussian and impulse noise environments. However, recently some techniques have been proposed that can be useful for filtering highpass signals embedded in a heavy tailed noise. These techniques include: myriad and median filters admitting negative weights proposed by Arce et al, and robustfilters designed in frequency domain proposed by Djurovi´ c and Stankovi´ c. If weassume that a signal has both lowpass and highpass regions, some combination between techniques designed for lowpass data and techniques designed for highpass data would be useful. In this paper we investigate possibility to combine these two kinds of non-linear filters in order to perform successive denoising of signals with both low and high frequency content.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131623716","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
State-space model identification using input and output data with steady state values zeroing multiple integrals of output error 状态空间模型识别使用输入和输出数据的稳态值零输出误差的多重积分
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1580220
M. Kosaka, H. Uda, E. Bamba, H. Shibata
{"title":"State-space model identification using input and output data with steady state values zeroing multiple integrals of output error","authors":"M. Kosaka, H. Uda, E. Bamba, H. Shibata","doi":"10.1109/ISSPA.2005.1580220","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1580220","url":null,"abstract":"This study proposes a new deterministic off-line identification method that obtains a state-space model using input and output data with steady state values. This method comprises two methods: zeroing the 0 » N -tuple integral values of the output error of single-input single-output transfer function model [1] and Ho-Kalman’s method [2]. Herein, we present a new method to derive a matrix similar to the Hankel matrix using multi-input and multi-output data with steady state values. State space matrices A, B, C and D are derived from the matrix by the method shown in reference [2]. This method’s utility is that the derived state-space model is emphasized in the low frequency range under certain conditions. Numerical simulations of multi-input multi-output system identification are illustrated.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130436386","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
Robust approaches for joint angle/Doppler estimation for space-time adaptive processing (STAP) airborne radar in non-Gaussian clutter 非高斯杂波条件下STAP机载雷达联合角/多普勒估计鲁棒方法
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1581045
M. Sahmoudi, H. Belkacemi, S. Marcos, M. Benidir
{"title":"Robust approaches for joint angle/Doppler estimation for space-time adaptive processing (STAP) airborne radar in non-Gaussian clutter","authors":"M. Sahmoudi, H. Belkacemi, S. Marcos, M. Benidir","doi":"10.1109/ISSPA.2005.1581045","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1581045","url":null,"abstract":"This paper deals with the problem of joint angle and Doppler estimation for STAP airborne radar in non-Gaussian clutter modeled as a complex symmetric alpha-stable (SfiS) process. We propose two recursive covariance estimation approaches based on a pre-processing stage, which are robust to the heavy-tailed clutter effect: we use the truncated data in the first one and the compressed data in the second one. The estimate of the signal subspace then used to robustify the MUSIC subspace estimation method. Remarkably, simulation results show that the devised compression-based (a modified robust MUSIC) method provides higher estimation performance than the existing ones, notably in higher impulsive noise environments.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120941846","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 sampling limit for the empirical mode decomposition 经验模态分解的抽样极限
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1581021
N. Stevenson, M. Mesbah, B. Boashash
{"title":"A sampling limit for the empirical mode decomposition","authors":"N. Stevenson, M. Mesbah, B. Boashash","doi":"10.1109/ISSPA.2005.1581021","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1581021","url":null,"abstract":"The aim of this paper is to investigate the effect of sampling on the empirical mode decomposition (EMD). To this end, an experiment utilising linear frequency modulated (LFM) signals was used to simulate different sampling rates. This experiment showed that as the frequency content of the signal (fc) approached the sampling frequency (fs) the EMD performed poorly due to poor amplitude resolution. This led to a definition of a sampling limit that was 5 times the Nyqvist rate (fs/10) to improve the performance of the EMD. Comparative simulation with this sampling limit was conducted on a simulated and a real world signal. The results exhibited significant improvement in intrinsic mode function (IMF) orthogonality, the distribution of IMF energy and IMF coherence.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129777784","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: 44
On comparing speech quality of various narrow- and wideband speech codecs 窄带和宽带语音编解码器的语音质量比较
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1581010
Anssi Rämö, H. Toukomaa
{"title":"On comparing speech quality of various narrow- and wideband speech codecs","authors":"Anssi Rämö, H. Toukomaa","doi":"10.1109/ISSPA.2005.1581010","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1581010","url":null,"abstract":"In recent years wideband speech coding has attracted quite a lot research. However, there have been only a few papers describing the quality difference between narrow and wideband coded speech. In this paper we describe the testing methodology and how the sample processing was done in order to evaluate these two conditions in a single test. Results from a six different listening tests are shown and explained in detail. In addition to standard AMR wideband and narrowband codecs we have tested two so called open source codecs namely iLBC and Speex. We have no knowledge that these codecs have been tested earlier in a formal listening test.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132717675","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: 22
Fine-grained scalability for H.264/AVC H.264/AVC的细粒度可扩展性
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005. Pub Date : 2005-08-28 DOI: 10.1109/ISSPA.2005.1580242
J. Ridge, Yiliang Bao, M. Karczewicz, Shawn Wang
{"title":"Fine-grained scalability for H.264/AVC","authors":"J. Ridge, Yiliang Bao, M. Karczewicz, Shawn Wang","doi":"10.1109/ISSPA.2005.1580242","DOIUrl":"https://doi.org/10.1109/ISSPA.2005.1580242","url":null,"abstract":"An algorithm for fine-grained scalability (FGS) in H.264/AVC is presented. This algorithm is included in Working Draft 2 of the H.264/AVC scalable extension. Encoding block coefficients in a cyclical manner places “higher-value” bits earlier in the bit stream. If the bit stream is truncated, higher-value bits are therefore more likely to be retained. By arranging the bit stream in such a manner, a PSNR gain of up to 0.5 dB can be achieved versus non-cyclical coding, depending upon the sequence and bit stream truncation point.","PeriodicalId":385337,"journal":{"name":"Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005.","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133366879","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
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