例句與造句

1. Quantity of vast discrete points are compressed to a appropriate number and these points are partitioned to different quadrangle for the reason of surface approximation using nurbs
   四邊域劃分是實(shí)現(xiàn)了離散數(shù)據(jù)點(diǎn)的劃分問(wèn)題，將離散數(shù)據(jù)點(diǎn)進(jìn)行分割，使每個(gè)區(qū)域適合于四邊域的曲面擬合。
2. 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基于所給的nurbs曲線的逼近算法，建立了帶插值條件的離散點(diǎn)集的nurbs曲面的逼近算法。
3. Using local base surface parameterization , a parametric quadric surface approximation method is used to estimate the local surface curvature properties of scattered points based on propagating normal vector direction
   首先，計(jì)算各點(diǎn)的鄰近點(diǎn)集，選取合適的局部基礎(chǔ)曲面，把鄰近點(diǎn)集投影到相應(yīng)的局部基礎(chǔ)曲面。
4. Making full use of the correlated space information of multi - beam bathymetric data , the author put forward a method of gaussian surface approximation to build the grid net of regular digital terrain model ( dtm ) of surveyed seafloor , which is more accurate than other approximation methods
   本文充分利用了多波束數(shù)據(jù)的空間相關(guān)信息，提出了一種基于高斯地形曲面擬合的數(shù)字地理模型數(shù)據(jù)網(wǎng)格化方法，準(zhǔn)確快速地得到標(biāo)準(zhǔn)等深線圖。
5. The nurbs curves and surfaces approximation to constrained data sets is discussed in this dissertation . the major works are as follows : firstly , based on simulated annealing algorithm and least square principle , a nurbs curves approximation algorithm to constrained discrete data sets is presented
   本文討論了帶約束的離散點(diǎn)集的nurbs曲線、曲面的逼近問(wèn)題，主要工作如下： 1基于模擬退火算法和最小二乘法，給出了帶插值條件的離散點(diǎn)集的nurbs曲線逼近的算法。
6. It's difficult to find surface approximation in a sentence. 用surface approximation造句挺難的
7. In the final chapter , we discuss interval polynomial approximation of rational surfaces . firstly , we briefly state the interval - surface approximation based on the taylor expansion , and later , we give out a better interval - surface approximation based on the optimization method , which is also the main work of this paper
   第四章主要介紹了有理曲面的區(qū)間多項(xiàng)式的逼近，首先簡(jiǎn)單介紹了基于泰勒展開(kāi)來(lái)做的區(qū)間曲面逼近，后面是本文的主要工作，我們基于優(yōu)化方法得到了更好的區(qū)間曲面逼近，它也是本文的重要部分。
8. Algorithms of curvature estimation and data simplification of scattered point cloud data are studied . local surface curvature properties on scattered - point data are estimated using a parametric quadric surface approximation , and the key step is local base surface parameteration method which resolves parameteration of scattered - point data . an algorithm is presented for simplifying the scattered point cloud data based on curvature restriction
   實(shí)例表明,本文算法的簡(jiǎn)化結(jié)果既較好地保留了形狀特征,同時(shí)使點(diǎn)的分布以點(diǎn)云密集的強(qiáng)制保留區(qū)為中心,在向附近擴(kuò)散的過(guò)程中逐漸變稀,避免簡(jiǎn)化后點(diǎn)云的局部過(guò)密或局部過(guò)稀的情況。