Multisided linear surface interpolation 多边区域上的线性插值曲面
With loe ’ s idea of singular blending, this paper addresses non-uniform algebraic trigonometric ( nuat ) b-spline curve and surface interpolation methods 本文主要应用loe’s的奇异混合思想,研究了非均匀代数三角(nuat)b样条曲线曲面的插值方法
Secondly, based on nurbs curves approximation algorithm, a nurbs surface approximation algorithm on discrete data sets is given . thirdly, a shape-preserving parametric surface interpolation to data set is given 2基于所给的nurbs曲线的逼近算法,建立了带插值条件的离散点集的nurbs曲面的逼近算法。
The main content of this dissertation includes the processing of the distillation of the contour line from the paper map and the design of the b-spline surface interpolation for the scattered data 主要内容涉及了从纸地图扫描图像中提取等高线的实现方法和步骤,以及基于等高线的b样条曲面插值的方案设计和算法实现。
Cormecting with spatial geographic information systems, image atttibute library is constructed by using distance squares reciprocal method, trend surface interpolation grouding on windows algorithm, and via series of processes 应用距离平方倒数法、基于窗口算法的趋势面插值,经数据游程编码、链码等一系列过程,与空间地理信息系统接口,建立了图像属性库。
To interpolate the given ship offset data, the ship-hull surface is represented successfully by nurbs . the boundary conditions computation and knots vector construction are detailed in nurbs curve and surface interpolation 本文根据船体型值表的数据,用nurbs曲面来描述完整船体曲面,对插值曲面边界条件构造及节点矢量计算进行了研究,实现了船体曲线曲面的nurbs表达。
First in chapter 1, we introduce the background of the 3-d digital terrain map, discuss the resolution of the data source of the 3-d digital map and propose an idea that retrieving 3-d data with b-spline surface interpolation based on the contour line distilled from paper map 首先在第一章中介绍了三维电子地形图系统的研制背景,简要介绍了解决目前三维显示数据来源的方法,提出了从纸地图的等高线提取三维数据的思路,并对整个方案的实现框架作了简要的介绍。
In view of the altitude problems of inspecting the weighted average ways of obtaining altitude and the advantages and disadvantages of moving surface interpolation method are talked about through comparison, with which the writer draws a conclusion that moving surface interpolation method is suitable to be applied for the dynamic state inspection places,, moreover the key technology about the dynamic slate inspection is also taken into consideration, which includes digital camera and types of camera lens, the cause of camera lens distortion and the fundamental determining principle, the gain of image coordinate and the realization of time synchronization 针对检定点高程问题,分析比较了获取高程的加权平均法和移动曲而内插法的优缺点,得出移动曲面内插法适合用于动态检定场的结论。特别是针对动态检定的关键技术给予了相关研究,内容涉及:数码相机及相机镜头的选型,相机畸变差产生原因及测定的基本原理,像片坐标获取以及时间同步实现,得出结论:利用gpsoem板的秒脉冲(1pps)输出特性,能够实现两台数码相机与gps接收机时间同步,满足动态检定指标要求。
In view of the altitude problems of inspecting the weighted average ways of obtaining altitude and the advantages and disadvantages of moving surface interpolation method are talked about through comparison, with which the writer draws a conclusion that moving surface interpolation method is suitable to be applied for the dynamic state inspection places,, moreover the key technology about the dynamic slate inspection is also taken into consideration, which includes digital camera and types of camera lens, the cause of camera lens distortion and the fundamental determining principle, the gain of image coordinate and the realization of time synchronization 针对检定点高程问题,分析比较了获取高程的加权平均法和移动曲而内插法的优缺点,得出移动曲面内插法适合用于动态检定场的结论。特别是针对动态检定的关键技术给予了相关研究,内容涉及:数码相机及相机镜头的选型,相机畸变差产生原因及测定的基本原理,像片坐标获取以及时间同步实现,得出结论:利用gpsoem板的秒脉冲(1pps)输出特性,能够实现两台数码相机与gps接收机时间同步,满足动态检定指标要求。
Based on dxf, we get the object surface that has been triangulized . we have done a lot of experiments on the dimensional object surface interpolation, and concluded a serials of methods that have practical sense . the paper also makes primary research on the problem from the point of view in computer graphics 论文在dxf文件的基础上,对三维物体表面三角网格化以后表面插值的问题作了大量有针对性的实验,并得出了一套具备实际意义的处理方法;同时,本文从计算机图形学的角度,对这一问题作了初步的研究与探讨,得出的方法更加具有普遍意义。