搜索结果: 1-15 共查到“Mesh”相关记录92条 . 查询时间(0.078 秒)
MESH MODELLING OF 3D POINT CLOUD FROM UAV IMAGES BY POINT CLASSIFICATION AND GEOMETRIC CONSTRAINTS
Surface Reconstruction Surface Normal Point cloud Mesh model
2018/6/4
The point cloud generated by multiple image matching is classified as an unstructured point cloud because it is not regularly point spaced and has multiple viewpoints. The surface reconstruction techn...
MESH-TO-BIM: FROM SEGMENTED MESH ELEMENTS TO BIM MODEL WITH LIMITED PARAMETERS
Architectural Heritage BIM Documentation Ruins Segmented elements Visual programming
2018/6/5
Building Information Modelling (BIM) technique has been widely utilized in heritage documentation and comes to a general term Historical/Heritage BIM (HBIM). The current HBIM project mostly employs th...
基于身份盲签名的无线Mesh网络匿名切换认证方案
无线Mesh网络 认证 数据隐私 密码学
2018/6/13
无线Mesh网络客户端的强移动性使得其需要在无线Mesh路由器之间进行频繁切换。为了解决当前无线Mesh网络中的切换认证方案无法同时实现高效率和高隐私保护的问题，利用密码学中的基于身份盲签名的思想，提出了一种具有隐私保护的高效的无线Mesh网络匿名切换认证方案。
在智能电网（ｓｍａｒｔｇｒｉｄ，ＳＧ）接入层的无线 Ｍｅｓｈ网络（ｗｉｒｅｌｅｓｓｍｅｓｈｎｅｔｗｏｒｋｓ，ＷＭＮｓ）应用中，针对数据流过
度地集中在关键节点而导致数据拥塞问题发生，提出一种基于平衡树的无线 Ｍｅｓｈ网络路由算法。在传统 ＡＯＤＶ
（ａｄｈｏｃｏｎｄｅｍａｎｄｄｉｓｔａｎｃｅｖｅｃｔｏｒｒｏｕｔｉｎｇ）算法的基础上，使用平衡树模型，综合考虑节点剩余容量和转发数据所需
的路由...
支持多业务传输的天基Mesh网络机会路由优化算法
会路由 多业务 Mesh网络 层次分析法
2018/2/8
针对天基骨干Mesh网络业务类型多样、计算能力相对不足的特点以及SOAR路由算法拥塞控制机制不足、确认机制不可靠以及不同业务QoS保障需求有差异的问题,提出了具有可靠联合确认机制并支持多业务传输的机会路由算法。该算法以预期成功传输次数来描述整体链路性能,有效实现了网络负载均衡与链路拥塞控制;算法兼顾多样化业务的传输,设计了一种路由路径自适应调整策略,以实现路径选择与业务类型的自适应调整。仿真结果表...
Liszt: A Domain Specific Language for Building Portable Mesh-based PDE Solvers
compiler analysis and program transformations, programming and runtime environments for high performance and high throughput computing
2016/5/24
Heterogeneous computers with processors and accelerators are becoming widespread in scientific computing. However,it is difficult to program hybrid architectures and there is no commonly accepted prog...
认知无线Mesh网络中资源节约的最小信道冲突值组播路由算法
认知无线Mesh网络 组播 频谱分配 粒子群优化
2016/7/27
认知无线Mesh网络中满足QoS约束的多目标优化组播路由问题比单目标优化组播问题更加复杂,为了快速求解认知无线Mesh网络中满足Qos约束的以最小化资源消耗与最小化信道冲突值的多目标优化组播路由问题,提出了一种基于粒子群优化算法的问题求解框架,包括问题描述、粒子编码与粒子初始化、适应度函数、粒子飞行、粒子变异、粒子消环。粒子由表示节点之间连接关系的带权邻接矩阵表示,重新定义了用于粒子飞行的3种运算...
提出了一种无线mesh网中最小网络编码代价低时延多播路由协议(MNCLDMR, minimal network coding and low delay multicast routing)。MNCLDMR的目标是选择合适的网络编码节点，最小化网络编码代价，降低网络时延。MNCLDMR主要思想是引入拓扑关键节点和网络编码关键节点的概念，以下一跳的节点是否是网络编码关键节点或拓扑关键节点作为路由判据...
Describing and Computing Model of the Topological Relation in Spherical Surface Quaternary Triangular Mesh
Spherical surface QTM Euler_number Topological relation
2015/12/3
Spherical surface QTM (Quaternary Triangular Mesh) is one of an efficient tool to deal with the global data because of its advantages of multi-resolution and hierarchy. Based on characters of spherica...
Combined Feature-Driven Richardson-Based Adaptive Mesh Refinement for Unsteady Vortical Flows
Combined Feature-Driven Richardson-Based Adaptive Mesh Unsteady Vortical Flows
2015/7/3
An adaptive mesh refinement strategy that couples feature detection with local error estimation is presented. The strategyfirst selects vortical regions for refinement using feature ...
A CONSERVATIVE MESH-FREE SCHEME AND GENERALIZED FRAMEWORK FOR CONSERVATION LAWS
conservation law advection equation mesh-free scheme fi nite diff erence fi nite volume
2015/7/3
We present a novel mesh-free scheme for solving partial differential equations. We first derive a conservative and stable formulation of mesh-free first derivatives. We then show tha...
3D Flapping Wing Simulation with High Order Spectral Difference Method on Deformable Mesh
3D Flapping Simulation Spectral Diff erence Method Deformable Mesh
2015/7/3
In this paper we carry out computational studies of three-dimensional flow over flapping wings. The problems we have investigated include, firstly, three-dimensonal simulation of ...
Dynamic Mesh Deformation for Adaptive Grid Refinement with Staggered Spectral Difference and Finite Volume Mesh
Dynamic Mesh Deformation Adaptive Grid Staggered Spectral Diff Finite Volume Mesh
2015/7/3
Better computational efficiency and reduced computational cost for high order CFD method are areas of active research. In this study, we investigate the potential of using dynamic deforming mesh ...
Feature-Driven Cartesian Adaptive Mesh Refinement in the Helios Code
Feature-Driven Cartesian Adaptive Mesh Refinement Helios Code
2015/7/3
Feature-detection methods are applied to drive Cartesian-based adaptive mesh re nement for improved vortex resolution in aerodynamics ow elds. Several approaches such as the Q-criterion, the eigenvalu...