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RICIAN: 作品数：23被引量：28H指数：3; 导出分析报告; 相关领域：电子电信更多>>; 相关作者：张婧毕大平刘月平姜秋喜崔瑞更多>>; 相关机构：桂林电子科技大学安徽省电子制约技术重点实验室南方医科大学深圳大学更多>>; 相关期刊：《吉林大学学报（信息科学版）》《电子科技大学学报》《山西电子技术》《Computers, Materials & Continua》更多>>; 相关基金：国家自然科学基金安徽省电子制约技术重点实验室基金中国航空科学基金陕西省自然科学基金更多>>

Novel Framework of Segmentation 3D MRI of Brain Tumors: 《Computers, Materials & Continua》2023年第2期3489-3502,共14页Ibrahim Mahmoud El-Henawy Mostafa Elbaz Zainab H.Ali Noha Sakr; Medical image segmentation is a crucial process for computer-aided diagnosis and surgery.Medical image segmentation refers to portioning the images into small,disjointed parts for simplifying the processes of analysis...; 关键词：MRI Rician noise speckle noise SEGMENTATION deep learning

Adaptive neighbor constrained deviation sparse variant fuzzy c-means clustering for brain MRI of AD subject: 《Visual Informatics》2021年第4期67-80,共14页Sukanta Ghosh Amlan Pratim Hazarika Abhijit Chandra Rajani K.Mudi; supported in part by Ministry of Electronics and Information Technology,Government of India under Sir Visvesvaraya PhD Scheme for Electronics and IT.; Progression of Alzheimer’s disease(AD)bears close proximity with the tissue loss in the medial temporal lobe(MTL)and enlargement of lateral ventricle(LV).The early stage of AD,mild cognitive impairment(MCI),can be tr...; 关键词：MRI Fuzzy c-means Neighbor information modeling SPARSE Rician noise AD

Theoretical analysis of pilotless frame synchronization for LDPC code using Gaussian approximation: 《High Technology Letters》2018年第1期27-35,共9页薛文 Ban Tian Wang Jianxin Lu Jinhui Yu Hai Shu Feng; Supported by the National Natural Science Foundation of China(No.61271230,61472190);the Open Research Fund of National Mobile Communications Research Laboratory,Southeast University(No.2013D02);the Open Research Fund of National Key Laboratory of Electromagnetic Environment,China Research Institute of Radiowave Propagation(No.201500013); The pilotless frame synchronization approach and implementations of LDPC code are the crucial issue of LDPC decoder. The Maximum-A-Posteriori probability( MAP) decoder has a perfect frame synchronization error rate( F...; 关键词：pilotless SYNCHRONIZATION LDPC code GAUSSIAN approximation RICIAN fadingchannel constraint NODE frame SYNCHRONIZATION error rate (FSER)

An Improved Characterization of Small Scale Fading Based on 2D Measurements and Modeling of a Moving Receiver in an Indoor Environment被引量：2: 《Journal of Signal and Information Processing》2016年第3期160-174,共15页Redhwan Mawari Alexander H. Henderson Muhammad B. Akbar Gregory D. Durgin Mohamed Zohdy; Accurately characterizing the wireless small-scale fading channel has been a challenging task in the wireless communication era due to the surrounding environment. Therefore, this paper introduces a new technique to e...; 关键词：Small-Scale Fading GAUSSIAN RAYLEIGH RICIAN TWDP Maximum Likelihood

Finite Series Representation of Rician Shadowed Channel with Integral Fading Parameter and the Associated Exact Performance Analysis: 《China Communications》2015年第3期62-70,共9页JIAN Xin ZENG Xiaoping YU Anning YE Changrong YANG Junyi; sponsored by the National Natural Science Foundation of China under grant No.61171089;the Training Program of the Major Research Plan of the National Natural Science Foundation of China under grant No.91438104; With the deployment of small cells and device to device communications in future heterogeneous networks,in many situations we would encounter mobile radio channels with partly blocked line of sight component,which are...; 关键词：rician shadowed fading channel Kummer transformation outage probability error probability channel capacity co-channel interference

Filter Bank Based Nonlocal Means for Denoising Magnetic Resonance Images: 《Journal of Shanghai Jiaotong university(Science)》2014年第1期72-78,共7页郭甜莉刘且根骆建华; the Postgraduate Innovation Ability Cultivating Foundation of China(No.Z-SY-009); Image denoising is a classical problem in image processing. Its essential goal is to preserve the image features and to reduce noise effiectively. The nonlocal means(NL-means) filter is a successful approach proposed ...; 关键词：Leung-Malik(LM) filter nonlocal means SIMILARITY image denoising Rician noise

Rician噪声水平场的估计及其在MR图像去噪中的应用被引量：2: 《中国生物医学工程学报》2013年第5期532-538,共7页余丽玲阳维冯衍秋刘闽冯前进陈武凡; 国家自然科学青年基金(81101109);国家重点基础研究发展计划(973计划)(2010CB732505); 针对MR图像中空间变化Rician噪声的抑制问题,提出了一种噪声水平场的估计方法,同时结合方差稳定变换和BM3D算法实现MR图像的去噪。噪声水平场通过Rician噪声水平的局部估计和稀疏性约束模型进行估计,利用噪声水平场对噪声图像幅值进行...; 关键词：Rician噪声噪声水平场方差稳定变换 BM3D

GPS Signal Short-Term Propagation Characteristics Modeling in Urban Areas for Precise Navigation Applications被引量：2: 《Positioning》2013年第2期192-199,共8页G. Sateesh Kumar G. Sasi Bhushana Rao M. N. V. S. S. Kumar; GPS navigation signal includes vital information such as orbital parameters, clock error coefficients etc. This received signal which is extremely weak is affected by several errors during its propagation and is of th...; 关键词：GPS NAVIGATION MULTIPATH RAYLEIGH and RICIAN

非局部主成分分析极大似然估计MRI图像Rician噪声去噪被引量：2: 《中国生物医学工程学报》2012年第4期481-486,共6页吴锡周激流谢明元; 由于MRI图像中噪声呈Rician分布,直接使用现有针对高斯噪声的去噪方法将引入误差。基于此本研究使用Rician噪声模型改进现有极大似然估计去噪的高斯模型,同时引入非局部主成分分析,在非局部区域选择灰度和纹理均具有较高相似性的像素进...; 关键词：图像去噪 Rician噪声非局部主成分分析极大似然估计

Temporal Correlation-Based Spatial Filtering of Rician Noise for Functional MRIs: 《Chinese Physics Letters》2012年第1期287-290,共4页Amir.A.Khaliq I.M.Qureshi Jawad.A.Shah; A novel correlation-based filter is presented for de-noising functional magnetic resonance imaging (fMRI) data.Temporal correlation-based exponential weights are defined for spatial smoothing of the data,with bias red...; 关键词：WEIGHTS SMOOTHING SPATIAL

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