mesh n. 1.网眼;筛孔;〔pl.〕网,网状物,网络;网丝;铜纱;〔pl.〕法网。 2.【机械工程】(齿轮的)啮合。 a 60 mesh screen (每英寸有)60孔的筛子。 a net with half-inch meshes 半英寸孔的网。 vt. 1.用网捕;使缠住。 2.【机械工程】(使)咬合,钩住 (with)。 3.编[织]网;使成网状。 mesh a net 编网。 vi. 1.被网住,落网。 2.紧密配合;【机械工程】互相啮合 (with)。 be caught in meshes of the law 陷入法网。 be in mesh (齿轮)互相咬住。
The algorithm builds voxel between neighboring slices of volume data , then gets density of a certain substance by experience . after setting threshold for surface of the substance which we want to get , and computing triangle mould of every voxel cube by use of linearity interpolation , the algorithm represents the surface of the substance as the form of triangle mesh 该算法通过在相邻的体数据切片之间构建体素,根据经验获得某一种物质的密度值,设定待求物质表面的阈值,利用线性插值求出每一个立方体体素的三角剖分的构型,进而将整个物体表面以三角型网格的形式表示出来。
In this thesis , basic subdivision schemes and its adaptive schemes in cad , together with the algorithm which is about triangle mesh model fitting loop subdivision surface , are studied in depth . then a software system based on subdivision surface is developed , and these algorithms are integrated in it . the main work is as follows : ( 1 ) subdivision theories and typical subdivision schemes are analyzed 本文先对基本细分算法及其在cad中的自适应细分算法和三角网格模型拟合loop细分曲面算法进行了比较深入的研究,最后将其集成开发出一个基于细分曲面的软件系统,主要内容包括: ( 1 )分析了细分理论和典型细分模式,阐述了细分曲面的极限点、切矢、法矢等基本几何量的精确计算方法。
In view of above problems , this article studies the key technology of mass data processing system , and design a system framework point to the triangle mesh data , which is made up of millions series of triangles . this framework resolves the problem that a computer could not read all the mass data into its storage and process them through data block partion , and also reduces the space that mass data occupies in hd by data compression 针对以上问题,本文研究了海量数据处理系统的关键技术,针对由百万级数量的三角形构成的三角网格数据,设计了一个系统框架,通过数据分块解决计算机不能把海量数据全部读入内存进行处理的问题,通过数据压缩解决海量数据占用大量硬盘空间的问题。
Furthermore , the tool - path generation algorithm of rough machining on the workpiece with open pockets is put forward . ( 8 ) two finish machining methods based on solid models are studied : planar - section method and projection method . with projection method a finish - machining algorithm based on triangle meshes of solid surfaces is implemented ( 3 )研究了基于实体模型两种数控精加工方法:截面法和投影法,从工程实际应用出发,用投影法实现了基于实体表面离散的数控精加工算法,设计了三角片的拓扑结构,解决了三角平面片搜索优化问题,实现了刀具轨迹的生成与干涉处理算法。
Triangle mesh models have been established as the most general and flexible schemes to represent complex surface models in the area of reverse engineering ( re ) , rapid prototyping manufacturing ( rpm ) , numerical control ( nc ) programming , 3d animation , etc . but the models reconstructed from real - world data may contain unavoidable noise and many narrow triangles , so the models must be optimized and modulated under given tolerances 三角网格模型是逆向工程、快速原型制造、数控加工编程、三维动画等技术中常用的模型表示方法,模型的质量直接影响到产品的质量,尤其在逆向工程中,直接通过测量数据得到高质量的网格模型几乎是不可能的。因为,测量数据中不可避免地存在各种噪声和扰动,因此在满足几何精度要求的前提下,对网格模型进行优化调整,以提高模型质量就十分必要。
By an imaginary uniform sampling on the original triangle mesh , our algorithm makes the 3d point set using in icp algorithm not only approximatively uniformly distribute in the measured object surface , but also possess of more information of the object surface than classical icp algorithm 通过在三角形网格上按面积均匀分布的假想抽样,在没有明显增加计算复杂度的情况下,使得代入icp算法的3d点集,不仅是近似均匀地分布在物体表面上,而且更加充分地反映了被测物体的表面信息。
A Triangle mesh is a type of polygon mesh in computer graphics. It comprises a set of triangles (typically in three dimensions) that are connected by their common edges or corners.