发布求助
文献互助 智能选刊 最新文献

2010 18th European Signal Processing Conference最新文献

筛选
英文 中文
Improving microaneurysm detection in color fundus images by using an optimal combination of preprocessing methods and candidate extractors 利用预处理方法和候选提取器的最佳组合改进彩色眼底图像中的微动脉瘤检测
2010 18th European Signal Processing Conference Pub Date : 2010-08-23 DOI: 10.5281/ZENODO.42119
B. Antal, A. Hajdu
{"title":"Improving microaneurysm detection in color fundus images by using an optimal combination of preprocessing methods and candidate extractors","authors":"B. Antal, A. Hajdu","doi":"10.5281/ZENODO.42119","DOIUrl":"https://doi.org/10.5281/ZENODO.42119","url":null,"abstract":"In this paper, we present an approach to improve microaneurysm detection in color fundus images. This task is usually realized by candidate extraction, which is followed by a classification step. The proposed method aims to increase the number of true positives in the first phase of the microaneurysm detection process. Thus, we establish a framework for selecting an optimal combination of preprocessing methods and candidate extractors. Our investigation shows that the state-of-the-art candidate extractors provide significantly improved results, when they are optimally combined with preprocessing approaches. We show that this performance can be further increased with an ensemble formed by a globally optimal combination of the preprocessing methods and candidate extractors.","PeriodicalId":409817,"journal":{"name":"2010 18th European Signal Processing Conference","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126308945","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
Design of digital IIR integrator using B-spline interpolation and Gauss-Legendre integration rule 基于b样条插值和高斯-勒让德积分规则的数字IIR积分器设计
2010 18th European Signal Processing Conference Pub Date : 2010-08-23 DOI: 10.5281/ZENODO.41956
C. Tseng, Su-Ling Lee
{"title":"Design of digital IIR integrator using B-spline interpolation and Gauss-Legendre integration rule","authors":"C. Tseng, Su-Ling Lee","doi":"10.5281/ZENODO.41956","DOIUrl":"https://doi.org/10.5281/ZENODO.41956","url":null,"abstract":"In this paper, the design of digital IIR integrator is investigated. First, the B-spline interpolation method is described. Then, non-integer delay sample estimation of discrete-time sequence is derived by using B-spline interpolation approach. Next, the Gauss-Legendre integration rule and noninteger delay sample estimation are applied to obtain the transfer function of digital integrator. Finally, some numerical comparisons with conventional digital integrators are made to demonstrate the effectiveness of this new design approach.","PeriodicalId":409817,"journal":{"name":"2010 18th European Signal Processing Conference","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121494358","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
A new region search method based on DOA estimation for speech source localization by SRP-PHAT method 一种新的基于DOA估计的区域搜索方法用于SRP-PHAT语音源定位
2010 18th European Signal Processing Conference Pub Date : 2010-08-23 DOI: 10.5281/ZENODO.41983
A. D. Firoozabadi, H. R. Abutalebi
{"title":"A new region search method based on DOA estimation for speech source localization by SRP-PHAT method","authors":"A. D. Firoozabadi, H. R. Abutalebi","doi":"10.5281/ZENODO.41983","DOIUrl":"https://doi.org/10.5281/ZENODO.41983","url":null,"abstract":"Steered Response Power-PHAse Transform (SRP-PHAT) method has been already proposed and investigated for the sound source localization. Grid search methods can be used to find global maximum of SRP, but they are so computationally expensive that can not be used in real-time applications. In this paper, we have proposed a SRP-based localization method which works in cascade with a DOA estimation module; i.e. first the direction of speaker is recognized by one of the DOA estimation methods; after that, we bound the search region to a space fragment around estimated direction of speaker; then we use SRP-PHAT algorithm computations and volume contraction methods (such as SRC and CFRC) on this fragmentized regions and decrease computational costs to a large extent. By use of the data collected from different (speaker) scenarios, we demonstrate the accuracy and speed gained by proposed method.","PeriodicalId":409817,"journal":{"name":"2010 18th European Signal Processing Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126437011","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 new DWT-SVD based perceptual fidelity metric for quality assessment of watermaking schemes 一种新的基于DWT-SVD的感知保真度度量用于制水方案的质量评估
2010 18th European Signal Processing Conference Pub Date : 2010-08-23 DOI: 10.5281/ZENODO.41836
Franco Del Colle, J. Gómez
{"title":"A new DWT-SVD based perceptual fidelity metric for quality assessment of watermaking schemes","authors":"Franco Del Colle, J. Gómez","doi":"10.5281/ZENODO.41836","DOIUrl":"https://doi.org/10.5281/ZENODO.41836","url":null,"abstract":"A new DWT-SVD perceptual fidelity metric for the evaluation of watermarking schemes is introduced in this paper. A widely used Human Visual Model in the Discrete Wavelet Transform domain is employed by the metric to account for the frequency sensitivity, and the local luminance and contrast masking effects of the human eye. A relationship between the visual model in the DWT domain and the modification of the wavelet coefficients singular values is derived. Subjective experiments are used to validate the proposed metric, and its performance is compared to several state-of-the-art perceptual image distortion metrics. The paper focuses on Image Adaptive Watermarking methods in the Discrete Wavelet Transform Domain since they yield better results regarding robustness and transparency than other watermarking schemes.","PeriodicalId":409817,"journal":{"name":"2010 18th European Signal Processing Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134570217","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
Distributed source coding: Theory and applications 分布式源代码:理论与应用
2010 18th European Signal Processing Conference Pub Date : 2010-08-23 DOI: 10.5281/ZENODO.41833
V. Stanković, L. Stanković, Samuel Cheng
{"title":"Distributed source coding: Theory and applications","authors":"V. Stanković, L. Stanković, Samuel Cheng","doi":"10.5281/ZENODO.41833","DOIUrl":"https://doi.org/10.5281/ZENODO.41833","url":null,"abstract":"Distributed source coding (DSC) refers to separate compression and joint decompression of mutually correlated sources. Though theoretical foundations were set more than thirty years ago, driven by applications such as wireless sensor networks, video surveillance, and multiview video, DSC has over the past few years become a very active research area. This paper provides an introduction to DSC theory, practical code designs and applications, and outlines current research trends while identifying challenges and opportunities in both theory and practice of DSC.","PeriodicalId":409817,"journal":{"name":"2010 18th European Signal Processing Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134353711","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
An object-oriented cognitive source coding architecture for 3D video communications 面向对象的三维视频通信认知源编码体系结构
2010 18th European Signal Processing Conference Pub Date : 2010-08-23 DOI: 10.5281/ZENODO.41908
S. Milani, G. Calvagno
{"title":"An object-oriented cognitive source coding architecture for 3D video communications","authors":"S. Milani, G. Calvagno","doi":"10.5281/ZENODO.41908","DOIUrl":"https://doi.org/10.5281/ZENODO.41908","url":null,"abstract":"Reliable transmission of 3D video signals is nowadays an interesting research issue both for the new coding challenges that three-dimensional video signals pose and for the wide diffusion of multimedia communications over wireless networks. In order to deal effectively with packet losses over radio channels, several robust source coding schemes have been proposed. This article presents a reconfigurable and flexible architecture (named Cognitive Source Coder in analogy with Cognitive Radio systems) that implements different robust source coding solutions and adaptively adopts them according to channel conditions. The proposed approach permits improving the quality of the 3D scene reconstructed at the end terminal with respect to the corresponding non-adaptive approaches.","PeriodicalId":409817,"journal":{"name":"2010 18th European Signal Processing Conference","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128198576","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
Three-dimensional adaptive sensing of people in a multi-camera setup 人在多摄像头设置下的三维自适应传感
2010 18th European Signal Processing Conference Pub Date : 2010-08-23 DOI: 10.5281/ZENODO.42249
M. Andersen, R. Andersen, N. Katsarakis, Aristodemos Pnevmatikakis, Z. Tan
{"title":"Three-dimensional adaptive sensing of people in a multi-camera setup","authors":"M. Andersen, R. Andersen, N. Katsarakis, Aristodemos Pnevmatikakis, Z. Tan","doi":"10.5281/ZENODO.42249","DOIUrl":"https://doi.org/10.5281/ZENODO.42249","url":null,"abstract":"Sensing the presence and state of people is of paramount importance in assistive living environments. In this paper we utilise a set of fixed, calibrated cameras to model the bodies of people directly in three dimensions. An adaptive foreground segmentation algorithm is run per camera, providing evidence to be collected in 3D body blobs. A particle filter tracker allows monitoring the modelled bodies across time, offering estimations of their state by using hot-spots and body posture. We apply our system on fall detection and activity monitoring for the elderly, addressing both emergency and cognitive care.","PeriodicalId":409817,"journal":{"name":"2010 18th European Signal Processing Conference","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131888056","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
Crosstalk cancellation in VDSL systems VDSL系统中的串扰消除
2010 18th European Signal Processing Conference Pub Date : 2010-08-23 DOI: 10.5281/ZENODO.42112
Monique Düngen, Yajie Ruan, H. Rohling
{"title":"Crosstalk cancellation in VDSL systems","authors":"Monique Düngen, Yajie Ruan, H. Rohling","doi":"10.5281/ZENODO.42112","DOIUrl":"https://doi.org/10.5281/ZENODO.42112","url":null,"abstract":"The existing copper line telephone network is used successfully for very high speed digital subscriber line (VDSL) transmission systems. There is a major limitation in the resulting data rate by far-end crosstalk (FEXT), which can be mitigated by zero-forcing crosstalk cancellation procedures in upstream and precoding procedures in downstream. In order to obtain the channel state information (CSI) which crosstalk cancellation and precoding rely on, this paper presents a pilot-based channel estimation technique. Additionally a channel adaptation procedure is proposed, applying orthogonal pilot sequences. To avoid any pilot overhead, the pilots are continuously transmitted during the sync frames. In downstream, the precoder coefficient update is based on the feedback of the normalized error sample. The presented techniques lead to a higher efficiency and increased performance of VDSL systems. Simulations show that 95% of the data rate obtained with perfect CSI can be achieved in upstream and downstream.","PeriodicalId":409817,"journal":{"name":"2010 18th European Signal Processing Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121615851","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 constrained tensor-based approach for MIMO NL-CDMA systems 基于约束张量的MIMO NL-CDMA系统
2010 18th European Signal Processing Conference Pub Date : 2010-08-23 DOI: 10.5281/ZENODO.41953
G. Favier, Thomas Bouilloc
{"title":"A constrained tensor-based approach for MIMO NL-CDMA systems","authors":"G. Favier, Thomas Bouilloc","doi":"10.5281/ZENODO.41953","DOIUrl":"https://doi.org/10.5281/ZENODO.41953","url":null,"abstract":"In this paper, we propose a deterministic tensor-based approach for joint channel and symbol estimation in the context of multiuser multiantenna (MIMO) CDMA communication systems. We use a new nonlinear (NL) coding allowing to obtain a third-order block-Tucker2 model for the signals received by multiple receive antennas, with a constrained structure for the core tensors that ensures the uniqueness of the tensor model. Two types of receiver are developed. First, assuming that the users' code matrices are mutually orthogonal and known at the receiver, we derive a blind algorithm composed of two steps: a separation of users' contributions in the received signals, with decoding, followed by a blind channel and symbol estimation for each user separately. Then, when the code matrices are unknown, a semi-blind receiver is proposed for jointly estimating the channels, codes and symbols of all the users. Some simulation results are provided to illustrate the performance of the proposed receivers.","PeriodicalId":409817,"journal":{"name":"2010 18th European Signal Processing Conference","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117219281","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
Joint channel and frequency offset estimation using sigma point Kalman filter for an OFDMA uplink system 基于sigma点卡尔曼滤波的OFDMA上行系统联合信道和频偏估计
2010 18th European Signal Processing Conference Pub Date : 2010-08-23 DOI: 10.5281/ZENODO.42122
Héctor Poveda, G. Ferré, É. Grivel
{"title":"Joint channel and frequency offset estimation using sigma point Kalman filter for an OFDMA uplink system","authors":"Héctor Poveda, G. Ferré, É. Grivel","doi":"10.5281/ZENODO.42122","DOIUrl":"https://doi.org/10.5281/ZENODO.42122","url":null,"abstract":"In uplink transmissions of a coded orthogonal frequency division multiple access (C-OFDMA) system, a frequency synchronization has to be addressed. Few papers deal with this issue. Expectation - maximization (EM) approaches have been proposed but initialization strategies must be considered because the EM may converge to a local extremum. Here we propose a joint estimation of the channel and the carrier frequency offset (CFO) based on a sigma point Kalman filter. When considering an OFDMA uplink system over a Rayleigh fading channel, simulation results confirm that the proposed algorithm corresponds to a good compromise between CFO and channel estimation, bit error rate and computational cost. Since our approach has a lower computational complexity, the power consumption is lower, which is a great advantage in a wireless system.","PeriodicalId":409817,"journal":{"name":"2010 18th European Signal Processing Conference","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116223371","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信