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国家自然科学基金(60772066): 作品数：31被引量：31H指数：3; 导出分析报告; 相关作者：沈庭芝田卉郝兵赵三元张健更多>>; 相关机构：北京理工大学杭州电子科技大学中国兵器工业集团更多>>; 相关期刊：《光学学报》《Journal of Beijing Institute of Technology》《北京理工大学学报》《商业经济》更多>>; 相关主题：粒子滤波图像恢复图像恢复算法人脸图像视频编码更多>>; 相关领域：自动化与计算机技术电子电信经济管理理学更多>>

基于VRIO模型的饿了么企业竞争优势分析被引量：1: 《商业经济》2023年第8期56-58,共3页陈应棋沈庭芝; 国家自然科学基金资助项目(60772066)。; 随着信息时代的发展,本地生活平台得到越来越多民众、企业、商家的关注,饿了么平台在众多平台中成为得到顾客认可、商家合作、骑手加盟的优秀生活平台企业。通过以饿了么平台为研究对象,利用VRIO分析模型在企业竞争能力的品牌信誉能力...; 关键词：VRIO 饿了么企业竞争力资源

基于自动提取特征点的三维人脸表情识别被引量：10: 《北京理工大学学报》2016年第5期508-513,共6页岳雷沈庭芝; 国家自然科学基金资助项目(60772066); 为实现完全自动的人脸表情识别,提出一种基于自动提取三维及二维特征点的三维人脸表情识别算法.该算法采用在三维点云、深度图像以及三维点云对应的二维特征图像上分别自动获得特定特征点,并将非点云上获得的特征点映射回三维点云以获...; 关键词：三维表情识别三维特征点三维欧氏距离支持向量机

Radial-curve-based facial expression recognition: 《Journal of Beijing Institute of Technology》2015年第4期508-512,共5页岳雷沈庭芝张超赵三元杜部致; Supported by the National Natural Science Foundation of China(60772066); A fully automatic facial-expression recognition （FER） system on 3D expression mesh models was proposed. The system didn＇ t need human interaction from the feature extraction stage till the facial expression classif...; 关键词：facial expression radial curve Euclidean distance support vector machine （SVM）

Facial expression recognition with contextualized histograms: 《Journal of Beijing Institute of Technology》2015年第3期392-397,共6页岳雷沈庭芝杜部致张超赵三元; Supported by the National Natural Science Foundation of China(60772066); A new algorithm taking the spatial context of local features into account by utilizing contextualized histograms was proposed to recognize facial expression. The contextualized histograms were extracted fromtwo widely...; 关键词：facial expression recognition local binary pattern weber local descriptor spatial context contextualized histogram

User growth and penetration modeling for converged heterogeneous network被引量：1: 《Journal of Beijing Institute of Technology》2013年第3期361-366,共6页SADIA Murawwat 赵三元岳雷张超薛丞博 MUHAMMAD Imran Malik 沈庭芝; Supported by the National Natural Science Foundation of China(60772066); To evaluate the trail potential of converged heterogeneous network （CHN） market, the logistic method for adoption modeling of CHN is used. User growth ＆ penetration have been taken as two variants to find saturatio...; 关键词：CONVERGENCE heterogeneous network logistic model user growth user penetration

Modeling and analysis of multiservice queuing system for WiMAX network: 《Journal of Beijing Institute of Technology》2013年第1期43-48,共6页SADIA Murawwat AKHTAR Hussain MUHAMMAD Imran 赵三元刘振娟牛慧博; Supported by the National Natural Science Foundation of China(60772066); An analytical queuing model is proposed for the classified services of WiMAX network. Simulation model is also developed that corresponds to the Markovian analytical model using Java modeling tool （JMT）. This is a n...; 关键词：multi-rate traffic Markov Poisson process queuing model quality of service WIMAX

Greyscale based learning in BPNN for image restoration problem: 《Journal of Beijing Institute of Technology》2013年第1期94-100,共7页UMAR Farooq 闫雪梅 SADIA Murawwat MUHAMMAD Imran; Supported by the National Natural Science Foundation of China(60772066);Higher Education Commission,Pakistan; A new method of back propagation learning with respect to the problem of image restora- tion which is named as greyscale based learning in back propagation neural networks （BPNN） is in- vestigated. It is observed th...; 关键词：greyscale based learning back propagation neural network（BPNN） image restoration

Application of improved BPNN in image restoration-learning coefficient: 《Journal of Beijing Institute of Technology》2012年第4期543-546,共4页Umar Farooq 沈庭芝 Muhammad Imran 赵三元 Sadia Murawwat 王清云; Supported by the National Natural Science Foundation of China (60772066);Higher Education Commission of Pakistan; A new method of artificial intelligence based on a new improved back propagation neural network （BPNN） algorithm is partially applied in the problem of image restoration. In order to over- come the inherited issues ...; 关键词：image restoration image processing INTELLIGENT back propagation neural network（BPNN） dynamic learning coefficient

Novel algorithm for pose-invariant face recognition: 《Journal of Beijing Institute of Technology》2012年第2期246-252,共7页刘朋樟沈庭芝赵三元岳雷闫雪梅; Supported by the National Natural Science Foundation of China(60772066); By combining the AdaBoost modular locality preserving projection （AMLPP） algorithm and the locally linear regression （LLR） algorithm, a novel pose-invariant algorithm is proposed to realize high-accuracy face reco...; 关键词：pose-invariant block-based virtual frontal view locally linear regression （LLR） FACERECOGNITION

基于学习的人脸图像超分辨率重构算法被引量：3: 《北京理工大学学报》2012年第4期386-389,共4页李涛王晓华张超杜部致李宇春; 国家自然科学基金资助项目(60772066); 提出了一种新的基于学习的人脸图像超分辨率重构算法,利用高分辨率图像和低分辨率图像的拓扑结构相似性,将现有的低分辨率人脸图像在低分辨率人脸图像字典中展开,在保持系数不变的同时将字典换为高分辨率人脸图像字典,最终得到待重构的...; 关键词：人脸图像超分辨率主成分分析全变分约束

国家自然科学基金(60772066)