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In the CAGD field, Coons surface, B spline surface and NURBS surface are mainly used. Coons类曲面、B样条曲面和NURBS曲面是CAGD中主要的曲面表达形式。
In this paper, it has used three uniform B spline surface to construct the surface of the blade die cavity, and developed a CAD/CAM system of the blade die. 应用双三次均匀B样条曲面，对汽轮机导叶片锻模型腔表面进行曲面构造，据此开发了导叶片锻模CAD及其型腔表面CAM系统。
According to the matrix representation of quadric B spline surface,a sufficient condition of G~1 continuity between two patches of adjacent quadric B spline surface has been provided. 利用二次B样条曲面的矩阵表达式;将B样条曲面进行分片表示;给出了两邻接二次B样条曲面间的G1光滑拼接的充分条件.
Sufficient Condition of G~1 Continuity Between Two Patches of Adjacent Quadric B Spline Surface 两邻接二次B样条曲面G~1光滑拼接的充分条件
B spline surface B样条曲面
Curvature monotony condition Tor the quadratic rational B spline curves. 二次有理B样条曲线曲率单调条件
Imaging Spectral Image, Strip Corretion, Surface Fitting Correction, Information Entropy, Loss-less Compression. 成像光谱图像,相关性,曲面拟合校正,信息熵,无损压缩
An algorithm of feature surface recognition based on quadric surface fitting and geometry property was presented. 摘要提出了基于二次曲面拟合误差分析和几何属性分析的特征曲面识别算法。
non- uniform rational B - spline surface NURBS曲面
This paper studies the method and process of interpolating the DEM based on rectangular grid with B spline and smoothing spline. 本文研究了B样条和磨光样条应用在基于矩形格网的DEM内插中的思想、方法及实现过程。
The distance from 3-direction quartic box spline surface to the central triangular planar patch of its control net is investigated as well as its bound. 摘要研究了三向四次箱样条曲面与控制网格中心三角平面片间的距离和该距离的界。
The paper introduces a new way to calculate the structure of a given woven fabric on the basis of float combination with B spline curve funct. 本文根据浮长线对织物结构影响的原理,结合三次B样条函数,对机织物结构进行计算,根据计算结果可以得到模拟图像效果。
But the atmosphere does succeed in making a surprisingly large amount of the earth's surface fit for human habitation. 但大气确是有功劳的，它在地球表面开辟了广袤的适宜人类休养生息的地方。
In this article,the gray-scale image LOD scheme is realized by image meshing and B spline subdivision wavelet transform. 通过将灰度图像网格化,并在图像网格上进行B样条细分小波变换,实现了图像的LOD压缩算法。
Next, in the interior of the patches, surface fitting points and cross boundary derivatives are estimated from the reference curves by constructing virtual iso-parametric curves. 其次,在曲面片内部,曲面拟合点和边界方向导数可以从参考曲线中通过构建虚拟等参线的方法得到。
Non-uniform rational b-spline (NURBS) surface fitting based on an extracted topology array was made and the method of multi-point forming was used to form parts. 用基于曲率抽样的拓扑矩形阵列进行NURBS曲面拟合并用多点成形方法成形工件；
This method combines the homomorphic filtering and B spline smoothing.Firstly, a coarse bias estimation is got by Gaussian homomorphic filtering on the corrupted image. 该方法将同态滤波和B样条平滑相结合，首先采用高斯同态滤波器对污染图像滤波，得到初步估计的偏差场；
Without consideration of discontinuities possible existing in range image, traditional finite difference or local surface fitting method, inevitably produce errors. 传统的有限差分或局部拟合方法未考虑到表面上可能出现的不连续性，因而会不可避免地出现错误。
Application of B spline and smoothing spline on interpolating the DEM dased on rectangular grid[J].Acta Geodaetica et Cartographica Sinica,2000,29(3):240-244. B样条与磨光样条在基于矩形格网的DEM内插中的应用[J].;测绘学报;2000;29(3):240-244
The problem can be decomposed into four sub-problems, the correspondence problem, the branching problem, the tiling problem and the surface fitting problem. 这个问题可以分为四个子问题，即轮廓对应问题、分叉问题、拼接问题和曲面拟合问题。