三维视图

On the basis of OCM, segmentation based on curvature radium is presented in the paper, in which curvature radium is calculated using parametric-surface fitting, and detecting edge points is realized from orthogonal direction, which ensure the integrality of edge points. Since the data is organized by cross-line in OCM, a new arithmetic, Double-direction Angle Difference arithmetic, is brought forward, which can pick up edge points more quickly.

物体的表面一般由多个曲面相交组成，要建立完整的几何模型，需要对测量数据进行区域分割——区分不同曲面的数据，现有的区域分割大多是对单视图的图像式测量数据进行的，但完整的CAD模型需要联合多个视图产生，本文在上面提出的三维正交模型的基础上，提出了三种区域分割方法：第一种方法是基于曲率半径的数据分区方法，通过二次参数曲面拟合计算局部曲率半径，从正交的多个方向进行检测，保证了边点提取的完整性。

With this information in hand, we can now calculate 3D coordinates in view space.

有这个信息在手，我们就可以计算视图中的三维坐标。

Full utilization of the functions of software can not only instantaneously connect the plane view with the three-dimensional part and make the reading and dimensioning of assembly-drawings more interesting, but also make it easier to understand the intersecting lines and dimensions in the assembly-drawings in course of 3D solid modeling.

在整个三维造型的过程中充分利用软件系统提供的功能，不仅能使平面的视图和空间的立体瞬间联系起来，使零件的读图和尺寸标注过程变得更加生动有趣，而且在三维造型的过程中理解零件图中相贯线的形成以及尺寸标注也变得更加简单。

On the other hand the temptation of using perspective visualizations as "eye candy" is quite high, and in many cases an isometric chart looks very attractive indeed.

另一方面，禁不住透视视图的诱惑，而变得华而不实的风险也是相当高，在很多情况下，三维图表看起来非常吸引人。

You have your normal 3D navigation view up to 800 metres from the junction.

您的正常三维导航视图高达800米，从交界处。

It is proved that two images of the quadric surface is not enough to reconstruct the quadric surface.

我们证明了两幅视图轮廓包含的信息不足以重构二次曲面，三幅视图对于恢复二次曲面三维表面是充分而巨必要的。

Concrete algorithm is firstly recognizing 2D feature obtained from geometric entities, then on the instruction of the shape analysis combining with the projective rulers of mechanical drawing, matching three 2D view features, creating 3D basic model, forming a operation list, finically finished 3D reconstruction.

在重建算法上，利用提取的几何实体进行二维视图特征的识别，在形体分析法的指导下，结合制图中的投影原则匹配三维基本形体，最后按照基本体素的运算序列经过复杂的布尔运算完成重建。

Three-dimensional imaging of medical objects from volume data is considered increasingly useful in various fields, such as medical diagnosis, forensic medicine, palaeoanthropology etc.

摘 要 从医学体数据中得到对象的三维可视图像有广泛的应用领域，例如医学诊断、法医学、古人类学等。

The relationship between an object s three dimensional entity and its two-dimensional multi-views can be expressed vividly and visually by Solid Edge V11 parametric molding software, which constructs three-dimensional entity model and represents an engineering object spatially and dynamically.

用SolidEdgev11参数化造型软件建立三维实体模型，以真正的空间概念和动态方式表示工程对象能形象直观地表达一个对象的三维实体与多幅二维视图之间的关系。

The definition, composition, and the formalisation expression of process are depicted, the process characteristics of networked manufacturing system is studied, and a basic process hierarchical structure, which is considered to be important to show the structure of networked manufacturing system, is given.

首先构建了以控制模型为主，功能模型、资源模型、组织模型和数据模型为辅的三维集成化模型框架，通过控制模型建立起其他几个视图模型之间的内部关联，通过资源模型和组织模型来反映网络化制造系统中组织的分散性和过程对动态资源的调度与分配。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。