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2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628)最新文献

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Audio representations on overcomplete sets 过完备集合上的音频表示
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) Pub Date : 2002-11-07 DOI: 10.1109/ICDSP.2002.1028157
L. Daudet, M. Sandler, B. Torrésani
{"title":"Audio representations on overcomplete sets","authors":"L. Daudet, M. Sandler, B. Torrésani","doi":"10.1109/ICDSP.2002.1028157","DOIUrl":"https://doi.org/10.1109/ICDSP.2002.1028157","url":null,"abstract":"We present in this paper the advantages of using overcomplete sets for the representation and coding of audio signals. More specifically, we have investigated hybrid signal models of the type {tonal+transients+stochastic residual} where these features can be simultaneously present at all times. The extraction of the two \"deterministic\" components (tonal and transient parts) is made in such a way that each of them can be represented in a compact way in appropriate orthogonal basis (MDCT and dyadic wavelets, respectively). The use of structured representations significantly reduces the potentially high cost of encoding of significance maps. Preliminary results show that this approach is well-adapted for transform coding of very high-quality sounds.","PeriodicalId":351073,"journal":{"name":"2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127098226","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 DSP course for real-time systems design and implementation based on the TMS320C6211 DSK 基于TMS320C6211 DSK的DSP实时系统设计与实现课程
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) Pub Date : 2002-11-07 DOI: 10.1109/ICDSP.2002.1028224
M. D. Galanis, A. Papazacharias, E. Zigouris
{"title":"A DSP course for real-time systems design and implementation based on the TMS320C6211 DSK","authors":"M. D. Galanis, A. Papazacharias, E. Zigouris","doi":"10.1109/ICDSP.2002.1028224","DOIUrl":"https://doi.org/10.1109/ICDSP.2002.1028224","url":null,"abstract":"In this paper a course on real-time DSP systems design and implementation is presented which makes use of the MATLAB and the Texas Instruments TMS320C621 I DSP Starter Kit (DSK). The students attending this course get familiarized with the operation of DSP algorithms on an embedded digital signal processor. This course emphasizes the issue of the transition from an advanced design and simulation environment, like MATLAB, to a DSP software environment, like Code Composer Studio IDE.","PeriodicalId":351073,"journal":{"name":"2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124983540","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: 23
Forward and backward anisotropic diffusion filtering for color image enhancement 彩色图像增强的正向和反向各向异性扩散滤波
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) Pub Date : 2002-11-07 DOI: 10.1109/ICDSP.2002.1028241
B. Smolka, M. Szczepański
{"title":"Forward and backward anisotropic diffusion filtering for color image enhancement","authors":"B. Smolka, M. Szczepański","doi":"10.1109/ICDSP.2002.1028241","DOIUrl":"https://doi.org/10.1109/ICDSP.2002.1028241","url":null,"abstract":"A novel approach to the problem of edge preserving smoothing, which allows an image to be broken into a set of homogeneous regions, is proposed and evaluated. The new algorithm is based on combined forward and backward anisotropic diffusion with an incorporated time dependent cooling process. This method is able to remove image noise efficiently while preserving and enhancing image edges.","PeriodicalId":351073,"journal":{"name":"2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124996159","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
Spectrum estimation of nonuniformly sampled signals 非均匀采样信号的频谱估计
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) Pub Date : 2002-11-07 DOI: 10.1109/ICDSP.2002.1028210
A. Tarczynski
{"title":"Spectrum estimation of nonuniformly sampled signals","authors":"A. Tarczynski","doi":"10.1109/ICDSP.2002.1028210","DOIUrl":"https://doi.org/10.1109/ICDSP.2002.1028210","url":null,"abstract":"Nonuniform sampling of signals, if properly used, may allow performing digital signal processing that does not suffer from the undesired effects of aliasing. This paper presents the results of research on estimating spectra of signals whose samples were taken at randomly distributed sampling instants. The paper determines the conditions under which a DFT-like spectrum estimator provides an unbiased approximation of the spectrum of the original continuous-time signal in an unlimited range of frequencies. It also provides analysis of the accuracy of such spectral estimation and identifies factors which decide the quality of the results. Not every random sampling scheme is suitable for performing alias free signal processing. The analysis presented here shows how to generate two suitable sampling schemes. Numerical examples illustrate the main thesis of the paper.","PeriodicalId":351073,"journal":{"name":"2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628)","volume":"604 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123235919","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: 10
Methods for detecting impulsive noise in speech and audio signals 语音和音频信号中脉冲噪声的检测方法
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) Pub Date : 2002-11-07 DOI: 10.1109/ICDSP.2002.1028251
lsmo Kauppinen
{"title":"Methods for detecting impulsive noise in speech and audio signals","authors":"lsmo Kauppinen","doi":"10.1109/ICDSP.2002.1028251","DOIUrl":"https://doi.org/10.1109/ICDSP.2002.1028251","url":null,"abstract":"Computationally efficient methods for detecting non-Gaussian impulsive noise in digital speech and audio signals are presented. The aim of the detection is to find the errors without false detections in the case of e.g. percussive sounds in music signal or stop-consonants in speech signal. Various methods for computing a detection signal and a threshold curve are studied and tested. The detection can be applied in real time to a digital data stream.","PeriodicalId":351073,"journal":{"name":"2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123266809","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: 64
Convergence analysis of the recursive least M-estimate adaptive filtering algorithm for impulse noise suppression 脉冲噪声抑制递推最小m估计自适应滤波算法的收敛性分析
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) Pub Date : 2002-11-07 DOI: 10.1109/ICDSP.2002.1028178
S. Chan, Yue-Xian Zou
{"title":"Convergence analysis of the recursive least M-estimate adaptive filtering algorithm for impulse noise suppression","authors":"S. Chan, Yue-Xian Zou","doi":"10.1109/ICDSP.2002.1028178","DOIUrl":"https://doi.org/10.1109/ICDSP.2002.1028178","url":null,"abstract":"We present the convergence analysis of the recursive least M-estimate (RLM) adaptive filter algorithm, which was recently proposed for robust adaptive filtering in the impulse noise environment. The mean and mean squares behaviors of the RLM algorithm, based on the modified Huber M-estimate function (MHF), in the contaminated Gaussian (CG) noise model are analyzed. Close-form expressions are derived. The simulation and theoretical results agree very well with each other and suggest that the RLM algorithm is more robust than the RLS algorithm under the CG noise model.","PeriodicalId":351073,"journal":{"name":"2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125251513","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
A robust speaker dependent algorithm for isolated word recognition 一种鲁棒的独立词识别算法
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) Pub Date : 2002-11-07 DOI: 10.1109/ICDSP.2002.1028257
F. Beritelli, S. Casale, S. Serrano
{"title":"A robust speaker dependent algorithm for isolated word recognition","authors":"F. Beritelli, S. Casale, S. Serrano","doi":"10.1109/ICDSP.2002.1028257","DOIUrl":"https://doi.org/10.1109/ICDSP.2002.1028257","url":null,"abstract":"The paper deals with a simple speaker-dependent (SD) isolated word recognition (IWR) system based on template-based pattern matching. Different algorithms for storing and calculating the distortion between models and examples of words to be recognised are analysed. More specifically, the paper proposes a new algorithm that enhances performance with a slight increase in computational load and the amount of memory needed to store the models as compared with a traditional VQ-based approach. The results obtained in tests are given in terms of recognition rate, using the TIMIT-46 database with various type of background noise and different SNRs.","PeriodicalId":351073,"journal":{"name":"2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126761461","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
Noise tolerant object recognition using Gabor filtering 基于Gabor滤波的抗噪目标识别
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) Pub Date : 2002-11-07 DOI: 10.1109/ICDSP.2002.1028344
Joni-Kristian Kämäräinen, V. Kyrki, H. Kälviäinen
{"title":"Noise tolerant object recognition using Gabor filtering","authors":"Joni-Kristian Kämäräinen, V. Kyrki, H. Kälviäinen","doi":"10.1109/ICDSP.2002.1028344","DOIUrl":"https://doi.org/10.1109/ICDSP.2002.1028344","url":null,"abstract":"The choice of features for invariant object recognition is one of the most essential problems in computer vision. The authors have previously proposed Gabor (1946) filtering based feature extraction methods which have been successfully applied in invariant object recognition. In this study, the Gabor filtering based feature extraction is further analysed in terms of distortion tolerance which is an essential property for many applications. Experiments indicate that an accurate recognition can be achieved in the presence of significant amounts of distortions.","PeriodicalId":351073,"journal":{"name":"2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122407988","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: 19
Digital real time line simulator 数字实时时间线模拟器
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) Pub Date : 2002-11-07 DOI: 10.1109/ICDSP.2002.1028268
T. Fliess, H. Jentschel
{"title":"Digital real time line simulator","authors":"T. Fliess, H. Jentschel","doi":"10.1109/ICDSP.2002.1028268","DOIUrl":"https://doi.org/10.1109/ICDSP.2002.1028268","url":null,"abstract":"Beside measurement devices and noise generators transmission lines or devices modeling the electrical behavior of these lines are required within test environments for xDSL equipment. State-of-the-art line simulators are based on passive networks or on active analog circuitry. We propose a line simulation concept applying real time digital signal processing techniques. This new approach provides a high flexibility and simulation accuracy.","PeriodicalId":351073,"journal":{"name":"2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628)","volume":"45 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114456960","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
Unsupervised segmentation of stereoscopic video objects: investigation of two depth-based approaches 立体视频对象的无监督分割:两种基于深度的方法的研究
2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628) Pub Date : 2002-11-07 DOI: 10.1109/ICDSP.2002.1028185
K. Ntalianis, A. Doulamis, N. Doulamis, S. Kollias
{"title":"Unsupervised segmentation of stereoscopic video objects: investigation of two depth-based approaches","authors":"K. Ntalianis, A. Doulamis, N. Doulamis, S. Kollias","doi":"10.1109/ICDSP.2002.1028185","DOIUrl":"https://doi.org/10.1109/ICDSP.2002.1028185","url":null,"abstract":"Two unsupervised video object segmentation techniques are proposed and are compared in terms of computational cost and segmentation quality. Both methods are based on the exploitation of depth information. In particular a depth segments map is initially estimated by analyzing a stereoscopic pair of frames and applying a segmentation algorithm. Next, considering the first \"constrained fusion of color segments\" (CFCS) approach, color segmentation is performed to one of the stereo pairs and video objects are extracted by fusing color segments according to depth similarity. In the second method an active contour is automatically initialized onto the boundary of each depth segment, according to a fitness function that considers different color areas and preserves the shapes of depth segments' boundaries. Then the active contour moves onto a grid to extract the video object. Experiments on real stereoscopic sequences exhibit the speed and accuracy of the proposed schemes.","PeriodicalId":351073,"journal":{"name":"2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122165062","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
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