三维图

ABSTRACT: The 3D space information in the 3D color scanner is obtained form the 2D image list.

三维激光彩色扫描仪中的三维空间信息是从二维图象序列中得到的。

The finite difference is used to approximate differential operation; the reflectance map equation described by the first order nonlinear differential equation is transformed into an algebraic equation about the unknown surface heights, and then the objective equation is constructed by the reflectance map equation and gradient information of image. Moreover, the Newton iterative algorithm is utilized to obtain the numerical solution and 3D shape of the surface.

采用有限差分近似微分运算，将一阶非线性微分方程所描述的反射图方程转化为关于未知表面高度的代数方程，再由反射图方程和图像梯度信息构造目标方程，进而用Newton迭代算法求出该方程的数值解，得到表面三维形状。

The first part is from chapter 2 to chapter 5, which makes the research of fast rendering of 3D scene in VR. The second part is from chapter 6 to chapter 12, which researches the optimal bit allocation and arithmetic coding in wavelet image compression.

从第二章到第五章是第一部分，研究了虚拟现实系统三维场景图象的快速生成算法；从第六章到第十二章为第二部分，研究了小波图象压缩编码中的最优比特分配和算术编码。

With plastic brainpan product as an example , the plastic melt flow is analyzed and simulated by Moldflow software , and the mold is designed by the adoption of UG software according to the basic process of modern mold design method , leading to reasonable injection molding parameters , optimized mold structure , two dimensional drawing of mold structure and three dimensional shape for NC machining .

以塑料头盖制品为例，按照现代模具设计方法的一般过程，综合运用Moldflow软件进行塑料流动分析和UG软件进行模具设计，得到了合理的注射工艺参数和优化的模具结构，以及模具的二维工程图和用于数控加工的零件三维编程模型。

The relational database is used to organize data. The pre-processing with graphical human-computer interaction and 3D visual output is applied as a dramatic analysis method for engineer including data form, sample contour, isobar graph, vector graph, histogram and so on.

该系统以关系型数据库组织各种数据，完全实现了人机图形交互式前处理及三维可视化输出，为工程人员提供了包括数据表格、取样曲线、等位线、等位面图、向量图及二元函数图等一系列生动形象的数据分析手段。

It considers the differences in surface reflection in different image regions, separates the image into Lambert surface and specula surface, then reconstructs the shapes respectively, fuses the two results, changes the illuminant direction and power, generates new image.

该方法考虑了图象中各部分表面反射模型的差异，通过将图象各区域划分成朗伯表面和镜面反射，分别进行三维重建，然后融合这两个结果，改变光照方向和强度，投影生成新的图象。

In chapter 7, the constrained Delaunay triangulation is applied to visualization of oil geological data and griding of mechanical part. Data field is displayed by color map, contour map and section.

第七章将约束Delaunay三角网格应用于石油地质勘探数据场的可视化和机械零件的网格剖分，用三维立体图、渐变色图、区域填充图、等值线图、剖面图显示数据场。

The main technique and the functions of coextrusion die design CAD system were studied, and two-layer pipe coextrusion die design CAD system was founded. The system can execute polymer coextrusion die designing and modeling according to the product\'s information, give the three-dimension assembly structure and engineering drawing.

该系统可以在人机交互状态下进行工艺分析与三维模具设计，选择模具中各零件的结构，系统自动完成工艺参数和主要模具结构参数的计算，最后生成模具的三维造型和工程图。

According to provide mapping products parts Die Casting plans and three-dimensional map or a few die, casting process for the preparation of programmes and heat treatment, trial production mold, repair mode, guiding the production process and to promptly resolve problems or feedback at the scene, casting the test or correction, study Existing problems and proposed solutions, until the qualified products and delivery.

根据用户提供产品零件图绘制铸件图及模具图或三维数模，编制铸造工艺方案及热处理方案，试制模具、修模，指导生产过程并及时解决或反馈现场问题，对铸件进行检验或校正，研究存在问题并提出解决方案，直至产品合格并交货。

Turok is hopeful that string theory and a related development known as the " holographic principle ", which shows that a singularity in three dimensions can be translated into a mathematically more manageable entity in two dimensions (which may imply that the third dimension and gravity itself are illusory).

弦理论及其相关的用三维方式描述宇宙奇点的全息图原理的进展，使塔洛克抱有希望，使他能将这些理论转化成数学上较易处理的二维实体（这可能意味着第三维和重力本身是虚幻的）。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。