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探讨基于改进移动立方体算法的腹部器官CT图像三维重建效果。方法 提出一种基于区域增长法的通用树结构和移动等值点法的自适应改进移动立方体算法，先进行医学图像分割，选取种子点后标记出与阈值相交的所有体元；创建通用树结构，将相交体元插入子节点中，确定基于通用树的顶点索引方式；通过移动等值点合并共面三角形，简化等值点信息的获取。基于1名志愿者的腹部CT图像，采用传统移动立方体算法和改进移动立方体算法构建肾...
Memory-assisted Measurement-device Independent Quantum Key Distribution
Memory-assisted Measurement-device Independent Quantum Key Distribution
2016/1/22
A protocol with the potential of beating the existing distance records for con-ventional quantum key distribution (QKD) systems is proposed. It borrows ideas from quantum repeaters by using memories i...
Receding Learning-aided Control in Stochastic Networks
Receding learning-aided control Detection Network optimization Queueing
2016/1/22
In this paper, we develop the Receding Learning-aided Control algorithm ( RLC ) for solving optimization problems in general stochastic networks with potentially non-stationary system dynamics. RLC is...
3D Digital Modelling as a Method for the Reconstruction of the Historical Image of the City: The Case of Piazza Bodoni In Turin at the End of Nineteenth Century
Architecture Digital Modelling Reconstruction Research CAD Representation
2015/11/13
The experience that I want to present consists of the case of piazza Bodoni in Turin, characterized, between 1866 and 1924 by the presence of an original pavilion dedicated to market.
Merging Augmented Reality Based Features in Mobile Multimedia Museum Guides
Augmented Reality Cultural Heritage Mobile Museum Guides Assisted Learning Education Entertainment
2015/11/13
Augmented Reality (AR), a computer science field considered by many as a subfield of the broader concept of Mixed Reality, could alter dramatically the way we interact not only with computers but also...
Documenting Architectural Heritage In Bahia - Brazil, Using Digital Technologies
Photogrammetry Architecture Developing Countries Cultural Heritage Education Modeling CAD
2015/11/13
This paper shows the experience that is being developed by the Laboratory of Computer Graphics applied to Architecture and Design (LCAD), at the Architecture School of the Federal University of Bahia ...
Innovative Systems for Assisted Analysis and Diagnosis
Analysis Data mining Integration Reconstruction Visualization Image
2015/11/13
Final aim of SIINDA research project is the development of an integrated system, composed by interagents hardware and software components, oriented to support the expert in the analysis and diagnosis ...
Regular analog/RF IC design using optimization with recourse including ellipsoidal uncertainty
Design cycle radio frequency integrated circuits nanoscale integrated circuit technology the rf analog circuit
2015/8/10
Long design cycles due to the inability to predict silicon realities are a well-known problem that plagues analog/RF integrated circuit product development. As this problem worsens for nanoscale IC te...
Web Services in Architectural and Civil Engineering
Building Information Modeling (BIM) computer-aided design (CAD) web services simulation online procurement
2015/6/30
Civil and Architectural Engineering have had a long and successful history in adopting computing technologies, from computer graphics, CAD, engineering analyses, virtual simulations, to project manage...
Web-enabled Model-based CAD for Web-enabled Model-based CAD for the Architectural, Engineering and Construction Industry
Building information modeling (BIM) computer-aided design (CAD) web-enabled construction management
2015/6/30
Computer-aided design (CAD) applications have been widely used in the architecture, engineering and construction (AEC) industry to aid architectural design, to visualize the physical appearance of a b...
Increasingly innovative ways of exploiting the Internet is giving rise to potentially new ways of designing and managing constructed facilities. The ability to source design components from different ...
应用于义齿三维模型建立的结构光测量系统
义齿 多频外差 多视几何 拼接
2014/5/23
义齿三维模型建立是基于逆向工程的牙科计算机辅助设计和制造的一个重要环节，其三维数据获取的精度是后期设计制作的关键；针对获取高精度义齿三维数据，探讨了一种基于双目视觉和时间相位投影的义齿模型三维测量系统，采用投影负指数序列的多频外差相位光栅，辅助获取高精度三维点云数据；拼接过程中再将三维数据反投影，结合多视几何约束下物点唯一性原理实现对重叠点云自动删除；真实实验证明：该系统可以获得义齿三维模型的高精...
为提高自动发音错误检测性能,提出一种区分性特征补偿训练算法.该方法将高斯后验概率矢量经过线性变换后作为偏移量补偿至传统的谱特征.将经过正确度标注的语音数据库上的发音错误检测F1值的最大化作为变换参数的训练准则.推导了目标函数对变换参数的偏导数公式,并利用无约束参数优化例程L-BFGS更新变换参数.发音错误检测实验表明该方法能够有效增大训练和测试集的F1值.并且训练和测试集的精确度、召回率也都有明显...
三维模型大尺度坐标测量辅助设计与评估方法
坐标测量设计 坐标测量评估 测量不确定度
2013/11/21
针对大尺度产品三维模型坐标测量信息缺乏和面向任务坐标测量结果质量评价困难的问题，引入新一代产品几何量技术规范(GPS)，提出了基于CATIA二次开发技术的坐标测量辅助设计方法，设计了CAD与CMM集成的XML数据结构，建立了坐标测量数据的UML模型；实现了符合新一代GPS要求的测量方案脚本化描述，开发了部分数据处理算法；提出了基于Monte Carlo方法的坐标测量不确定度评估方案和流程。基于以上...