2011 17th International Conference on Digital Signal Processing (DSP)最新文献_第8页

Ultranarrow-band synthetic aperture radar imaging for arbitrary flight trajectories 任意飞行轨迹的超窄带合成孔径雷达成像

2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004956

Ling Wang, B. Yazıcı

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引用次数: 5

Automatic segmentation of Pulmonary Artery (PA) in 3D pulmonary CTA images 三维肺部CTA图像中肺动脉的自动分割

2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004964

Y. Ebrahimdoost, S. Qanadli, A. Nikravanshalmani, T. Ellis, Z. Shojaee, J. Dehmeshki

{"title":"Automatic segmentation of Pulmonary Artery (PA) in 3D pulmonary CTA images","authors":"Y. Ebrahimdoost, S. Qanadli, A. Nikravanshalmani, T. Ellis, Z. Shojaee, J. Dehmeshki","doi":"10.1109/ICDSP.2011.6004964","DOIUrl":"https://doi.org/10.1109/ICDSP.2011.6004964","url":null,"abstract":"This paper proposes an efficient algorithm for segmenting the Pulmonary Artery (PA) tree in 3D pulmonary Computed Tomography Angiography (CTA) images. In this algorithm, to reduce the search area the lung regions from the original image are first segmented and the heart region is extracted by selecting the regions between the lungs. A pre-processing algorithm based on Hessian matrix and its eigenvalues is used to remove the connectivity between the pulmonary artery and other nearby pulmonary organs. To extract the pulmonary artery tree, we first use a region growing method initialized by a seed point which is automatically selected within the pulmonary artery trunk in the heart region. In the second step, the segmentation of the pulmonary artery is performed using a 3D level set algorithm, using the output of region grower as the initial contour. We use a new stopping criterion for the used level set algorithm, a consideration often neglected in many level set implementations. To validate and assess the robustness of the method, 20 CT angiography datasets were used (10 free pulmonary embolism scans and 10 CT with pulmonary emboli). A very good agreement with the visual judgment was obtained in both normal and positive pulmonary emboli CT scans.","PeriodicalId":360702,"journal":{"name":"2011 17th International Conference on Digital Signal Processing (DSP)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116765600","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: 11

MMSE transmit diversity selection for multi-relay cooperative MIMO systems using discrete stochastic gradient algorithms 基于离散随机梯度算法的多中继合作MIMO系统MMSE发射分集选择

2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004898

P. Clarke, R. D. Lamare

{"title":"MMSE transmit diversity selection for multi-relay cooperative MIMO systems using discrete stochastic gradient algorithms","authors":"P. Clarke, R. D. Lamare","doi":"10.1109/ICDSP.2011.6004898","DOIUrl":"https://doi.org/10.1109/ICDSP.2011.6004898","url":null,"abstract":"This paper presents a set of transmit diversity selection algorithms based on discrete stochastic optimization for a two-phase, decode-and-forward, multi-relay cooperative MIMO system with a non-negligible direct path. Transmit diversity selection is performed jointly with channel estimation using discrete stochastic and continuous least squares optimization, respectively. Linear minimum mean square error receivers are used at the relay and destination nodes whilst no forward channel knowledge, precoding or inter-relay communication is required. Sets of candidate transmit diversity selections are generated and methods to optimize the selection whilst avoiding exhaustive searching are presented. The benefits of reducing the cardinality of these sets is shown and the performance of the proposed schemes are assessed via mean square error, bit-error rate and complexity comparisons. The performance and diversity achieved is shown to exceed that of standard multi-relay cooperative MIMO systems and random transmit diversity selection, and closely match that of the exhaustive solution.","PeriodicalId":360702,"journal":{"name":"2011 17th International Conference on Digital Signal Processing (DSP)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115030623","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

Advanced statistical and adaptive threshold techniques for moving object detection and segmentation 用于运动目标检测和分割的高级统计和自适应阈值技术

2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004875

L. Christodoulou, T. Kasparis, Oge Marques

引用次数: 15

Morphological wavelets for 3D volume image decorrelation 三维体图像去相关的形态学小波

2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004948

Dragana D. Sandić-Stanković

引用次数: 2

A 2D bivariate EMD algorithm for image fusion 一种二维二元EMD图像融合算法

2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004923

Foteini Agrafioti, Jiexin Gao, H. Mohammadzade, D. Hatzinakos

引用次数: 5

Reduced complexity online sparse signal reconstruction using projections onto weighted ℓ1 balls 利用加权_1球上的投影降低了在线稀疏信号重构的复杂度

2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6005005

Y. Kopsinis, K. Slavakis, S. Theodoridis, S. McLaughlin

引用次数: 6

Compressed channel sensing: Is the Restricted Isometry Property the right metric? 压缩通道感知:受限等距属性是正确的度量吗?

2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6005010

A. Scaglione, Xiao Li

引用次数: 6

Maximum a posteriori estimation approach to sparse recovery 稀疏恢复的最大后验估计方法

2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004892

Mashud Hyder, K. Mahata

引用次数: 3

Analyte detection using an ion-channel sensor array 分析物检测使用离子通道传感器阵列

2011 17th International Conference on Digital Signal Processing (DSP) Pub Date : 2011-07-06 DOI: 10.1109/ICDSP.2011.6004913

P. Sattigeri, K. Ramamurthy, Jayaraman J. Thiagarajan, M. Goryll, A. Spanias, T. Thornton

引用次数: 2