A systematic scheme is proposed to automatically extract geometric surface features from a point cloud composed of a set of unorganized three-dimensional coordinate points by data segmentation.
给出了数据分块系统性方案，即从仅含有三维坐标的散乱的点云中自动提取几何曲面特性。
The whole feature parameters and local feature of spacial geometric features of road surface are put forward.
提出了表征路面表面空间几何特征的整体特征参数和局部特征参数。
Surface parametrization is one of important problems in computer graphics and computer aided geometric design.
曲面参数化是计算机图形学和计算机辅助几何设计中一个非常重要的问题。
Resistivity is determined by measuring resistance, then converting to surface or volume resistivity by taking geometric considerations into account.
电阻率的测量方法是测量电阻，然后再考虑几何因素将其变换成表面电阻率或体积电阻率。
Space Deformations controlled by parametric curve or surface are important methods for geometric shape edit and flexible object animation.
基于参数曲线和曲面控制的空间变形是重要的几何外形编辑和柔性物体动画实现手段。
The boxy geometric structure is entirely clad in charred timber, creating a textured black surface that appears different depending on how sunlight falls on it.
方正的几何结构完全覆盖着烧焦的木材，创造了有纹理的黑色表面，随着阳光的变化外观也随之变化。
Taking rigid disk surface as an example, fractal parameters are obtained by means of power spectrum and structure function, providing a proper geometric model for further contact analysis.
实验结果表明，分形维数能很好地表征表面轮廓，可为进一步的接触分析提供更合理的几何模型。
By taking 135 three-screw pump as an example, the geometric parameter design, the forming of spiral surface and the characteristic of screw gearing are investigated.
以135型三螺杆泵为例，对螺杆几何参数设计、螺旋型面的形成、螺杆啮合特性进行了探讨。
In this paper, we present the implementation of an algorithm, which can handle not only geometric simplification of models but also that of surface attributes, such as colors and textures.
本文实现一种算法，不仅能进行几何简化，还能简化模型的表面属性，包括：颜色和纹理。
Geometric shape is irregular polygon-shaped, not parallel to the surface to bulk, which shows the characteristics of the atmosphere of Stone Arts.
外形为不规则的多边形几何状，没有平行的面，以大块为主，显示出大气的石艺特点。
Current algorithms for generating progressive meshes often have a low efficiency and can only complete the simplification of the geometric characters, without considering the other surface attributes.
现有的递进网格生成算法不仅效率低，而且大多只能完成几何特征的简化，没有考虑网格模型的其它表面属性。
This paper analyzes the geometric features of the trousers type steel scuttle, sets up the mathematics model of the funnel surface of this scuttle.
分析了裤衩型钢煤斗外形的几何特点，建立了裤衩型钢煤斗漏斗表面的数学模型，分析了曲面展开的算法。
Here the three dimensional entity boundary is boundary surface mesh, which owns not only geometric property but also topology property.
此时，三维实体的“边界”是指“边界表面网格”，它既具有几何性质，又具有拓扑性质。
It puts forward that measuring the three-dimensional geometric data of log surface shape, reappearing log shape and analyzing and managing shape parameters of log is all controlled by computer.
提出将原木表面形状的三维几何数据的检测、原木外形轮廓三维模拟再现以及原木形状参数分析与管理操作过程交由计算机控制完成。
An entire PCM system of MEMS surface manufacturing process should include three parts: electronic parameters extraction, geometric parameters extraction and material property parameters extraction.
一个完整的MEMS表面加工工艺pcm系统应当包括三个部分：电学参数提取、几何学参数提取和材料特性参数提取。
This paper proposes a piecewise geometric approach to parametrize a kind of quartic implicit algebraic surface.
针对一类四次隐式代数曲面，提出一种基于分片的几何参数化方法。
The separation theory of geometric and physical parameters of the roughness surface and concerned experimental results have been described.
提出了地物粗糙表面几何参数与物理参数分离理论，阐述了相应的实验结果。
Crepe effect coefficient is defined as the product of the surface geometric structural parameters, i. e, amplitude of weft, density of weft, and number of wefts in unit length.
绉效应系数，被定义为表面几何结构参数，即纬线的波高、纬密和纬线单位长度中的半波数的乘积。
Surface reconstruction is reproduction process of geometric topology information and feature bases on surface practicality model.
曲面重建就是根据曲面实物模型的点云，重建其几何和拓扑信息，并再现特征的过程。
We developed a new method named Smoothed Atomic Volume Percentage (SAVP) to describe geometric properties of protein surface.
本文提出了一种新的用于描述蛋白质表面几何性质的方法—平滑原子体积分数方法。
The geometric configuration, moving conditions and force conditions of the tooth surface and the process of rock disintegration must be studied in designing the cutting structure.
欲设计合理的齿面结构必须研究齿面的几何形状、运动状态、受力状态和岩石破碎过程。
The user is also able to define necessary geometric constraints, so as to further control the surface shape.
用户也能够定义必要的几何约束来进一步控制曲面外形。
This paper is concerned with a geometric modelling system that integrates surface modelling with solid modelling.
本文描述了一个将曲面造型和实体造型技术统一起来的试验性几何造型系统。
A new method for predicting the surface tension of ternary from biliary ones by using geometric solution model is given.
介绍应用几何溶液模型法预测三元系表面张力的新方法。
It introduces the principle of the point-based rendering and some representative methods, discusses a way to deal with some holes on the surface which make in drawing the irregular geometric form.
文章介绍了基于点绘制技术的原理和比较有代表性的点绘制方法，探讨了外形非常复杂的不规则几何体在计算机图形绘制中生成的物体表面空洞的处理方法。
Objective To get the geometric parameters of the articular surface of the trapeziometacarpal joint for dynamic analysis of the joint.
目的通过对拇腕掌关节面定点测量，计算弧长和曲率，为探讨拇腕掌关节的功能提供几何形态参数。
ACIS is a prominent 3d modeling engine, which integrating wireframe, surface, and solid modeling in itself, supplies a geometric modeling platform for different 3d modeling applications.
ACIS是一种三维几何造型引擎，它集线框、曲面和实体造型于一体，为各种3d造型应用的开发提供了几何造型平台。
Convolution surface is an attractive technique in geometric modeling.
卷积曲面是一种很有潜力的隐式曲面造型方法。
The paper features an attempt to find the optimal axle moving locus of cutting tools and geometric parameter, based on the surface features and by means of a computer simulate machining process.
根据被加工的曲面特征，通过计算机模拟其加工过程，来寻求最优的刀轴运动轨迹和刀具几何特征参数。
The paper features an attempt to find the optimal axle moving locus of cutting tools and geometric parameter, based on the surface features and by means of a computer simulate machining process.
根据被加工的曲面特征，通过计算机模拟其加工过程，来寻求最优的刀轴运动轨迹和刀具几何特征参数。
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