2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)最新文献_第3页

Exact Cramer Rao Bound for near field source localization 精确Cramer Rao约束近场源定位

2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310646

Y. Begriche, Messaoud Thameri, K. Abed-Meraim

引用次数: 21

Underdetermined source separation of finite alphabet signals via l1 minimization 通过l1最小化的有限字母信号的欠定源分离

2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310624

S. Sbai, A. Aïssa-El-Bey, Dominique Pastor

引用次数: 9

Sequential fusion of decisions from adaptive and random samples for controlled verification errors 自适应和随机样本决策的顺序融合，以控制验证误差

2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310657

Vishnu Priya Nallagatla, V. Chandran

{"title":"Sequential fusion of decisions from adaptive and random samples for controlled verification errors","authors":"Vishnu Priya Nallagatla, V. Chandran","doi":"10.1109/ISSPA.2012.6310657","DOIUrl":"https://doi.org/10.1109/ISSPA.2012.6310657","url":null,"abstract":"Fusion techniques have received considerable attention for achieving performance improvement with biometrics. While a multi-sample fusion architecture reduces false rejects, it also increases false accepts. This impact on performance also depends on the nature of subsequent attempts, i.e., random or adaptive. Expressions for error rates are presented and experimentally evaluated in this work by considering the multi-sample fusion architecture for text-dependent speaker verification using HMM based digit dependent speaker models. Analysis incorporating correlation modeling demonstrates that the use of adaptive samples improves overall fusion performance compared to randomly repeated samples. For a text dependent speaker verification system using digit strings, sequential decision fusion of seven instances with three random samples is shown to reduce the overall error of the verification system by 26% which can be further reduced by 6% for adaptive samples. This analysis novel in its treatment of random and adaptive multiple presentations within a sequential fused decision architecture, is also applicable to other biometric modalities such as finger prints and handwriting samples.","PeriodicalId":248763,"journal":{"name":"2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)","volume":"212 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134422555","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 model-based framework for the design of a symbolic scheduler for pre-emptive real-time tasks 一个基于模型的用于设计抢占式实时任务的符号调度器的框架

2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310654

V. Janarthanan, Abdelouahed Gherbi

{"title":"A model-based framework for the design of a symbolic scheduler for pre-emptive real-time tasks","authors":"V. Janarthanan, Abdelouahed Gherbi","doi":"10.1109/ISSPA.2012.6310654","DOIUrl":"https://doi.org/10.1109/ISSPA.2012.6310654","url":null,"abstract":"We had shown in our previous work [7, 9] that supervisory control theory (SCT) of discrete-event systems could be applied for scheduling hard real-time systems. In particular, we had presented a formal framework for the synthesis of real-time schedulers on single processor systems using priority-based supervisory control of timed discrete-event systems (TDES). We had also provided the extension of SCT in designing schedulers for uniform multiprocessor systems [8]. As we had considered discrete time models in our scheduler design, the state sizes were substantially large, and increased exponentially with the number of real-time tasks. In order to reduce the state space explosion problem in our models, we have utilized a modified form of symbolic modeling methodology [3], along with the pre-stable algorithm proposed in [3], for reducing state space while designing schedulers for real-time tasks on uniprocessor systems. The main contribution through this paper has been the development of an informal procedure for uniprocessor scheduler design with reduced state space for preemptive real-time tasks.","PeriodicalId":248763,"journal":{"name":"2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132796403","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

Signal processing for low cost optical dataglove 低成本光学数据的信号处理

2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310603

W. Trottier-Lapointe, Lucas Majeau, Yahya El-Iraki, S. Loranger, Guillaume Chabot-Nobert, Jonathan Borduas, J. Lavoie, J. Lapointe

引用次数: 3

An introduction to deep learning 介绍深度学习

2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310529

Francis Quintal Lauzon

引用次数: 20

Estimating the time-varying periodicity of epileptiform discharges in the electroencephalogram 估计脑电图中癫痫样放电的时变周期性

2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310480

J. O’Toole, B. G. Zapirain, Iratxe Maestro Saiz, Alina Beatriz Anaya Chen, I. Y. Santamaria

引用次数: 5

Hyperspectral image compression using 3D discrete cosine transform and support vector machine learning 使用三维离散余弦变换和支持向量机器学习的高光谱图像压缩

2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310664

A. Karami, S. Beheshti, M. Yazdi

引用次数: 17

Instantaneous frequency estimation by the reassigned Stockwell spectrogram 重新分配斯托克韦尔谱图的瞬时频率估计

2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310481

Cheng Liu, Hongmei Zhu

{"title":"Instantaneous frequency estimation by the reassigned Stockwell spectrogram","authors":"Cheng Liu, Hongmei Zhu","doi":"10.1109/ISSPA.2012.6310481","DOIUrl":"https://doi.org/10.1109/ISSPA.2012.6310481","url":null,"abstract":"The Stockwell transform, a mix of the short-time Fourier transform and the wavelet transform, has been widely used in practice in the last decade due to its easily interpretable and multi-resolution time-frequency characteristics. In this paper, we introduce the reassigned Stockwell spectrogram by re-mapping the surface of the spectrogram of the Stock-well transform with the aim to improve its readability. We first define and mathematically validate the channelized instantaneous frequency (CIF) and the local group delay (LGD) for the Stockwell transform. At any given point in the time-frequency domain, the associated CIF and LGD provide a re-estimation of the time arrival and instantaneous frequency of the signal component observed at that point. Thus, the reassigned Stockwell spectrogram has signal energy highly concentrated at the instantaneous frequency/group delay curves and greatly increases the resolution and readability of the time-frequency structure of the underlying signal. The instantaneous frequencies of signal components can then be extracted by detecting the local energy peaks in the reassigned Stockwell spectrogram. The difference between the reassigned and conventional Stockwell spectrograms is illustrated using both synthetic and real signals.","PeriodicalId":248763,"journal":{"name":"2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134623739","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 fast hierarchical radiometric invariant stereo matching algorithm 一种快速分层辐射不变立体匹配算法

2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA) Pub Date : 2012-07-02 DOI: 10.1109/ISSPA.2012.6310580

Xiaozhou Zhou, P. Boulanger

引用次数: 0