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2009 16th International Conference on Digital Signal Processing最新文献

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Implementing high performance, low computation, IIR filters with 2-path recursive all-pass filters and the harris-sharpening filter 实现高性能，低计算，IIR滤波器与2路径递归全通滤波器和哈里斯锐化滤波器
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201182
F. Harris
{"title":"Implementing high performance, low computation, IIR filters with 2-path recursive all-pass filters and the harris-sharpening filter","authors":"F. Harris","doi":"10.1109/ICDSP.2009.5201182","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201182","url":null,"abstract":"We present here two techniques to form high performance, low cost digital filters from a set of low cost, low performance, prototype filters. Here cost is related to number of arithmetic operations and performance is measured by depth of out-of-band spectral attenuation and shallowness of in-band spectral ripple. The two mechanisms that support this process are the cascading of two-path recursive all-pass filter which form high order prototype filters with a small number of coefficients and application of the harris sharpening filter which uses the prototype filter and an all-pass companion filter to compensate for the increase of in-band ripple levels due to the cascade of prototype filters.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115297352","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
Low-delay noise estimation based on spectrum ripples and minimum statistics in adverse environments 不利环境下基于谱纹和最小统计量的低延迟噪声估计
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201172
Zhonghua Fu, Jhing-Fa Wang
{"title":"Low-delay noise estimation based on spectrum ripples and minimum statistics in adverse environments","authors":"Zhonghua Fu, Jhing-Fa Wang","doi":"10.1109/ICDSP.2009.5201172","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201172","url":null,"abstract":"This paper proposes a new noise estimation algorithm to reduce the estimation delays under highly non-stationary noise conditions. Since the harmonic ripples appeared in the spectrogram are valuable for human to localize the speech presence, based on the characteristics of these ripples, we propose a novel energy independent feature to detect the changing noise. If noise is present, the noise floors of the traditional minimum statistics (MS) are forced to update to follow the noise change. This scheme can also prevent the false rise of noise floors of MS during long speech presence. The performance of the proposed algorithm is evaluated by qualitative results and overall objective measures. Better performances are achieved compared with other noise estimation algorithms.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"36 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132497857","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
Analogue current quantizer architectures for implementing integer division-like functions 模拟实现整数除法功能的电流量化器架构
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201208
N. Petrellis, M. Birbas, J. Kikidis, A. Birbas
{"title":"Analogue current quantizer architectures for implementing integer division-like functions","authors":"N. Petrellis, M. Birbas, J. Kikidis, A. Birbas","doi":"10.1109/ICDSP.2009.5201208","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201208","url":null,"abstract":"An analogue current quantization circuit that can implement the integer division by a constant number, the integer floor function, and a function generator with a parametric ladder-like output is presented in this paper. These functions can be exploited in Analogue-to-Digital Converters (ADCs), fuzzy logic and neural networks as well as in signal processing units. Various architecture alternatives are presented which achieve different integer division resolution ranging from 1:2 to 1:65536 or more. High speed and low voltage supply are achieved in ADCs that are based on this divider due to the usage of current mode techniques. Nevertheless, the most important advantages of the presented architectures are the very low power consumption and die area that they require.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132510673","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: 6
A Karnaugh map {2,2} secret sharing scheme for color images 彩色图像的Karnaugh地图{2,2}秘密共享方案
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201146
K. Plataniotis, S. Stergiopoulos
{"title":"A Karnaugh map {2,2} secret sharing scheme for color images","authors":"K. Plataniotis, S. Stergiopoulos","doi":"10.1109/ICDSP.2009.5201146","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201146","url":null,"abstract":"This paper introduces a simple, computationally attractive {2, 2} secret sharing scheme visual suitable for processing color images. The new design utilizes matrix sets derived using a Karnaugh map. The encryption and decryption functions are executed at the bit level of the RGB color representation. The proposed scheme offers perfect reconstruction with no pixel expansion. Analysis and experimental results including in this work support the main argument that the developed scheme is ideal for transmission of color images over un-trusted, bandwidth limited, communication channels.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130856160","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
Range sidelobes blanking using contrasting mismatched filters 范围旁瓣消隐使用对比不匹配滤波器
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201252
N. Levanon, A. Scharf
{"title":"Range sidelobes blanking using contrasting mismatched filters","authors":"N. Levanon, A. Scharf","doi":"10.1109/ICDSP.2009.5201252","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201252","url":null,"abstract":"Radar range sidelobes, associated with pulse compression, are often reduced through the use of mismatched filters. We propose to blank the remaining sidelobes by using two or more mismatched filters, whose sidelobes are designed to peak at different delays. Design methods and simulation results are presented.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126857969","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
Optical steganography for data hiding in optical networks 光网络中数据隐藏的光学隐写技术
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201086
P. Prucnal, M. Fok, K. Kravtsov, Zhenxing Wang
{"title":"Optical steganography for data hiding in optical networks","authors":"P. Prucnal, M. Fok, K. Kravtsov, Zhenxing Wang","doi":"10.1109/ICDSP.2009.5201086","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201086","url":null,"abstract":"Optical steganography for data-hiding is experimentally demonstrated using group velocity dispersion in an optical network. A stealth channel is temporally and spectrally hidden underneath a public channel. Our technique applies to several different types of optical systems including optical code division and wavelength division multiplexing. The hidden signal is retrieved at the receiver through dispersion management. The effect of the stealth channel on the performance of the public channel is shown to be small; this is demonstrated through eye diagrams and bit-error rate measurements. To miniaturize the proposed scheme, compact chirped fiber Bragg gratings are used, reducing the length of the fiber providing group velocity dispersion is by a factor of 2000 compared to previous demonstrations.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123679721","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: 15
Periodic signal modeling for the octave problem in music transcription 音乐转录中八度问题的周期信号建模
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201127
A. Schutz, D. Slock
{"title":"Periodic signal modeling for the octave problem in music transcription","authors":"A. Schutz, D. Slock","doi":"10.1109/ICDSP.2009.5201127","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201127","url":null,"abstract":"Precise automatic music transcription requires accurate modeling and identification of the spectral content of the audio signal. Whereas a deterministic model in terms of modulated periodic signals allows to distinguish different notes, the presence of multiple notes separated by octaves poses a big problem since they share the same periodicity, and hence completely overlapping spectral content. In this paper we propose the introduction of a spectral model to allow distinction of such mixtures of spectral content at various octaves. Cyclic correlations are estimated at its pitch and decomposed into even and odd parts, corresponding to even and odd harmonics.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115896938","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
A new forensic model and its application to the collection, extraction and long term storage of screen content off a memory dump 一种新的取证模型及其在内存转储中屏幕内容的收集、提取和长期存储中的应用
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201189
Stefan Kiltz, Tobias Hoppe, J. Dittmann
{"title":"A new forensic model and its application to the collection, extraction and long term storage of screen content off a memory dump","authors":"Stefan Kiltz, Tobias Hoppe, J. Dittmann","doi":"10.1109/ICDSP.2009.5201189","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201189","url":null,"abstract":"In this paper we show how to extract graphics content within a memory dump of a Windows-based system. This includes the assurance of integrity and authenticity of evidence gathered this way using cryptographic mechanisms. We introduce a forensic data model and investigate different forensic analysis steps within a phase-oriented manner to classify potential forensic methods. Furthermore we discuss approaches for long term preservation for the forensic data aquired from the memory dumps to ensure authenticity and integrity.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114929499","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
TennisSense: A platform for extracting semantic information from multi-camera tennis data TennisSense:一个从多摄像头网球数据中提取语义信息的平台
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201152
Ciarán Ó Conaire, Philip Kelly, Damien Connaghan, N. O’Connor
{"title":"TennisSense: A platform for extracting semantic information from multi-camera tennis data","authors":"Ciarán Ó Conaire, Philip Kelly, Damien Connaghan, N. O’Connor","doi":"10.1109/ICDSP.2009.5201152","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201152","url":null,"abstract":"In this paper, we introduce TennisSense, a technology platform for the digital capture, analysis and retrieval of tennis training and matches. Our algorithms for extracting useful metadata from the overhead court camera are described and evaluated. We track the tennis ball using motion images for ball candidate detection and then link ball candidates into locally linear tracks. From these tracks we can infer when serves and rallies take place. Using background subtraction and hysteresis-type blob tracking, we track the tennis players positions. The performance of both modules is evaluated using ground-truthed data. The extracted metadata provides valuable information for indexing and efficient browsing of hours of multi-camera tennis footage and we briefly illustrative how this data is used by our tennis-coach playback interface.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121540546","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
Optimization of lossless audio decoders on a class of embedded systems with two cores 一类双核嵌入式系统上无损音频解码器的优化
2009 16th International Conference on Digital Signal Processing Pub Date : 2009-07-05 DOI: 10.1109/ICDSP.2009.5201061
M. Tadic, Dejan Sajic, J. Kovacevic
{"title":"Optimization of lossless audio decoders on a class of embedded systems with two cores","authors":"M. Tadic, Dejan Sajic, J. Kovacevic","doi":"10.1109/ICDSP.2009.5201061","DOIUrl":"https://doi.org/10.1109/ICDSP.2009.5201061","url":null,"abstract":"Increasing demand for High quality Audio/Video content put a great pressure on A/V codec complexity. On the other side, low-end devices demands low cost platforms. In this paper we present methodology for optimization of lossless audio decoders on a dual core DSP-s. In addition to the common techniques such as: instruction parallelization and buffer reusability, we describe Generalized Splitting Algorithm Technique, exploiting features of embedded system. The methodology of proposed algorithm is illustrated on CS4953xx dual core processor, tested in simulator and verified in real time systems (AVRs, Blu-Ray Players). Estimated 180 MIPS for audio decoder was split on 140 MIPS on a first core and 55 MIPS on a second core, providing MIPS vise optimal solution for entire system.","PeriodicalId":409669,"journal":{"name":"2009 16th International Conference on Digital Signal Processing","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124994617","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
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