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。
In recent years , a triangular mesh model from a given point cloud has been sufficiently researched . however , there is the problem of huge data and low quality of triangle mesh . with the development of coordinate measure system , scattered point cloud data which contain more details of the complex shape object , can be obtained conveniently 由于在将点云数据转换成三角网格模型时信息量成倍增加,且后续处理对网格质量要求较高,因而,研究直接以散乱点云数据为对象的数据处理与曲面重建技术,对提高逆向工程中测量数据的处理能力和建模效率具有重要意义。
The quality of reconstructed surfaces is related to many factors , such as quality of original data and surface fitting strategy , surface post - processing , and so on . in this thesis , the relative techniques of high quality surface reconstruction and surface interrogation based on triangular mesh are studied in depth . the main contents are as follows : ( 1 ) typical mesh smoothing schemes are analyzed 本文对基于三角网格模型的高质量工程曲面重建及曲面光顺性分析的相关问题进行了研究,主要内容包括: ( 1 )在对现有几种常用的三角网格模型光顺算法进行分析比较的基础上,结合图像处理中的kuwahara滤波以及双边滤波思想,提出了基于法矢修正的三角网格模型光顺算法。
Finite volume method can deal with irregular boundary conditions . in this paper , we discrete the water domain into triangular meshes , and simulate dam breaking , water droplets . the same as finite difference method , we just specify waves source , the movement of water waves can be simulated automatically 有限体积方法能够处理具有不规则边界水域的水流现象,在本文中,我们把求解的水域离散成无结构三角形网格,对溃坝问题、雨景等水流现象进行了模拟,和有限差分方法一样,我们仅仅指定产生水流动画的波源,水流动画的细节均由数值方法产生,不需要人工的干预。
In the process of model reconstruction with measured data cloud in reverse engineering , these are often data lose owing to partial covering of the part or limit of the measuring instrument within the acquired triangular mesh model . these holes must be repaired to form complete model of the part 在逆向工程通过测量海量数据建模中,由于零件局部遮挡或测量手段的限制,所获得的三角网格模型中往往存在数据缺失,形成孔洞,因而需要对孔洞进行修补以形成完整的零件模型。
Surface reconstruction is one of key techniques in reverse engineering . based on unorganized discrete points come from finite element analysis triangular mesh on exterior surface of the aeroengine hollow turbine blade , this dissertation studied some related problems , such as scattered data preprocessing , quadrangle partition and surface reconstruction technology 曲面重构是逆向工程研究的重要内容之一,本文基于航空发动机空心涡轮叶片外表面的有限元三角网格离散点,对离散数据点的预处理、四边域划分及曲面重构技术进行了研究。
Filtering is a common method for smoothing the triangular meshes of measuring data . this paper mainly contains the following : 1 ) this paper researches the cause of noise in measurement using atos system and the characteristic of different noise . this paper gives out some measures against noises in measurement 本文主要研究了atos测量噪声的产生原因并对主要的网格滤波方法进行比较和分析,具体工作如下: 1 )通过试验研究了atos测量噪声产生的原因和具体来源,分析了各种噪声的不同特点,根据噪声的不同来源和特点给出了减少和预防噪声的措施。