查询词典 3D

It is pointed that, in practical engineering, it is necessary to develop new algorithms with new criteria for triangulations of scattered points sampled from complicated surfaces so as to maintain the properties such as better smoothness and shape preserving. Finally the time and space complexities of various algorithms are briefly and concisely discussed, also the research trend of surface triangulations based on 3D arbit rary point-sets.

最后简要地讨论了算法复杂度以及目前剖分的主要研究方向，并指出在实际工程应用中对复杂曲面采样得到的散乱点集，要得到光顺和保形的三角剖分，需要新的剖分准则和算法。

Based on analyzing the algorithms of Delaunay triangulation creation in domestic and abroad, in view of the situation of building DTM and the need of realizing railway 3D visual design, a divide-and-conquer algorithm to build DTM is presented, the algorithm use square grids to manage disordered points, to form triangular meshes in grids, DTM can be obtained by merging the triangular meshes, so that the work of sorting of the disordered points before building DTM is reduced greatly; moreover, the algorithm utilize subarea to control the vertices of convex hull so that the range which support points locate in can be predefined when searching support points, the workload of searching support points can be reduced and the speed of merging two triangulations is raised.

在分析了国内外构建DTM算法的基础上，针对DTM算法的现状及铁路线路三维可视化设计的需要，创立了一种构建DTM的分治算法。算法引入方格网管理离散点数据，在格中构建三角网，然后再将这些三角网合并形成DTM，极大地减少了构网前对所有参加构网的离散点进行排序的工作量。此外，通过对凸包顶点数据进行分区管理，在搜寻凸包支撑线时，能预先确定出支撑点的范围，减少了搜索工作量，提高了三角网的合并速度。

Finally the time and space complexities of various algorithms are briefly and concisely discussed, also the research trend of surface triangulations based-on 3D arbitrary point-sets.

从剖分对象来看，剖分可分为以下 3类：平面区域剖分、三维实体剖分和空间曲面剖分，曲面剖分问题有时也称为二维半

In this paper, a flexible method of 3D reconstruction based on uncalibrated image sequence is proposed.

本文提出一种非定标图像序列的三维重建的柔性方法，具有一定的新意。

This paper is about robot 3D positioning and tracking under the guidance of vision in the uncalibrated environment.

摘要研究机械臂在手眼关系未知情况下依靠视觉信息引导完成三维空间定位及跟踪问题。

It's the second clip from the top entitled "Toy Story 3D Double Feature."

它是第二个夹子从题为&玩具故事3D双线地物的上面&。

Pricing can help generate demand, but estimates for the difference between standard TV and unsubsidised 3D starting prices range from $200 to $600 per set, not including special glasses costing about $100 per pair.

定价能有助于产生需求，但估计每台标准电视与不享有补贴的3D电视起价的价差将在200至600美元之间，这还不包括每副约100美元的特殊眼镜的费用。

Http://goldensunproxy.com/index.php?q=aHR0cDovL2VuLndpa2lwZWRpYS5vcmcvd2lraS9Vbml2ZXJzYWxfdmFsdWU%3D#cite_note-5cite_note-5 Some utilitarians, Jeremy Bentham for example, have argued that pleasure and pain are the only things that are of universal intrinsic value; that is, that pleasure and pain are the only things that are valued for themselves, and other things are of value only because they produce pleasure or pain.

对一些功利主义者，例如边沁，认为快乐与痛苦是唯一具有普遍内在价值的；也就是说，快乐和痛苦是对他们自己唯一有价值的东西，其他的东西的价值不过是因为他们生产快乐或痛苦。

Based on all images of 2D-DSA and 3D-DSA,we evaluated the aneurysm detective rate,visibilities of both aneurismal neck and its relationship with the parent artery,the dose of contrast media.3.Statistics:With SPSS 11.0 software,measurement data was demonstrated by?

由2名资深神经影像医师采用盲法分别阅片并记录两种方法动脉瘤的检出情况、瘤颈显示情况、瘤体与载瘤动脉的关系及对比剂用量，对其结果进行比较分析。3、统计学处理：采用SPSS 11.0软件，计量资料采用？

An interactive 3D visualisation tool is included for analysis of output data.

包括一个交互式的3D可视化工具来分析输出数据。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"