三维的

Using three moment invariants describing 3-D object reduces data greatly in the model database, this provides a potential solution to 3-D object recognition in arbitrary view.

用三维不变矩来表示三维物体可以极大地减少模型库中的数据量，为从根本上解决任意角度三维目标识别问题提供了潜在的希望。

Explore and improve the method of performing biomechanics experiment with digitalization mechanics model. 1、Construct 3D finite element model of normal acetabulum: Scan the pelvic example of human body with CT, restitution three-dimensional visible haunch bone with correlated software; investigate the method of 3D image reconstruction with plane images.

正常髋臼三维有限元模型的构建：通过对大体标本进行薄层CT扫描，利用相关软件重建三维可视髋臼，研究利用平面图像重建高仿真三维影像的方法；再利用有限元分析软件将髋臼力学参数赋值于可视模型上，使其具备力学性能，同时研究如何改进赋值方法，使有限元模型力学性能更接近于大体标本。

What are discussed importantly are terrain matching base on remote sensing,DEM,and fractal,skybox model base on hemispheroid grid,track filtering arithmetic,fog designing base on particle systems,etc.

战场场景管理模块主要用于虚拟三维场景的创建和管理，主要包括地形匹配、天空体匹配、高炮和导弹战车三维模型和空情三维模型的处理等。

Firstly,the cameras were calibrated high accurately,and the stereoscopic vision system model was established.Secondly,the 3D coordinates of the center of LED on the light-pen were achieved through matching the 2D images grabbed by the two cameras.Then,a series of the 3D coordinates of the center of LED were used for fitting straight line,and the 3D coordinates of the pen-points can be obtained from the line.

首先，对摄像机进行了高精度的标定，建立了双目立体视觉系统模型；其次，通过左右摄像机拍摄的二维图像，将两幅图像中的点进行匹配，获得光笔上的LED光斑中心三维坐标；然后，由一系列LED光斑中心的三维坐标拟合直线，从直线上得到笔尖的三维坐标。

Visualization of 3D information can make nonrepresentational data into visual 3D image, which is important for us to analyze and understand these data.

三维信息可视化能够使抽象的三维数据转换为形象的三维图象，从而有利于分析和理解这些数据。

An algorithm based on triangulation is presented. First, 3D range data is projected on square domain in the plane.

首先对三维深度数据在矩形平面域上投影，并对平面域内的采样点按Delaunay优化准则进行三角剖分，然后把网格节点变换到三维曲面上，从而实现了煤堆三维立体图的显示。

Considering the triangulation problem of 3D surface data set of 3DLCS, the thesis presents a multiresolution triangulation method to fit the raw scanning data set and another triangulation method of 3D scattered data set basing on 2D DT construction to fit 3D compressing data set.

对于3DLCS中的三维表面数据点集的三角形化问题，本文提出了针对原始扫描数据点集的多分辨率三角形化方法和针对三维压缩后数据点集的基于二维DT构造的三维散乱数据点集的三角形化方法。

A high-speed 3-D reconstruction algorithm for semitransparent specimen,named blend fluorescence algorithm based on B-Spine, is presented.

提出了一种适用于半透明生物试样的三维重建快速算法—基于B样条的"融合荧光"三维重建算法，并在脉冲电场刺激下鸡胚小脑粒细胞内Ca2 +三维分布测定实验中得到应用。

The results showed that there were serious pyrochlore inclusions in the PZNT film obtained from the LaAlO3(001)substrate,and the PZNT grain s were grown up spontaneously by isolated insular method in three dimension.

生长结果表明：在LaAlO3(001)基片PZNT晶粒以三维岛状自发生长，薄膜中有大量的焦绿石异相；在MgO(001)和SrTiO3(001)衬底上，为三维岛状异质外延生长，薄膜中焦绿石异相几乎消失；引入[001]取向的PZT种膜后，岛状三维生长变为二维生长，显著改善了外延膜的质量，获得了完整的PZNT膜。

D models are the most widely spread in the world of turbo-machinery for its simplicity, but they are indeed purely empirical correlations which not only fail to provide detailed information inside one or more components, but also require significant effort to recreate themselves if engine operating conditions or component representations change; quasi 3-D models have been the workhorses for compressor and turbine design for many years, and the primary benefit of using quasi 3-D system models is to facilitate the design and detail analysis of a particular component across the range of possible boundary conditions; Full 3-D models are gradually replacing quasi 3-D ones by virtue of requiring no exit flow angle model and loss model and being capable of predicting secondary flow in cascade.

零维模型由于使用时简单易行，因此在涡轮发动机的仿真中得到广泛应用，但零维模型作为纯粹的经验关系式无法反映部件内部的流动细节，并且一旦部件有少许改动则新特性的建立耗费巨大；准三维模型由于能够详细地提供部件内部的流动情况，方便设计而成为涡轮和压气机设计的主要工具；全三维数学模型正逐步取代准三维模型在涡轮设计中的主导作用，同后者相比前者能够预测叶轮机械内的二次流动，在粘性流计算时不需要气流角和损失的经验公式，因此拥有巨大的发展前景。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失