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- parametric surface fitting 参数曲面拟合
- 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。
- The trial functions of Ritz procedure with parametric surface characteristics are constructed to get functional and governing equations. 构造壳体参考曲面分片上的具有参数曲面特征的Ritz法的试解函数 ,并得到相应问题的泛函和控制方程。
- 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。
- 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。
- First, in the geometry modeling of complex target, the Grid Model used in the faceting approach, the Parametric Surface Approach and the decompounding approach are introduced. 在目标几何建模方法中,分别论述了面元网格法、参数曲面法和部件分解法。
- 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;
- 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。
- 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。
- NURBS surfaces are among the most commonly used parametric surfaces in CAGD and Computer Graphics. NURBS曲面是计算机辅助几何设计和计算机图形中最常用的参数曲面 .
- The traditional method using surface fitting or interpolation to plot formation drillability plane is complex,and the accuracy cannot be guaranteed if some parameters cannot be selected properly. 采用常规曲面拟合或插值方法绘制区域地层可钻性剖面的过程相当复杂,且若多项式选择不当,计算精度往往得不到保证,很难满足实际需要。
- A modified radial-edge topology structure is proposed, expresses manifold and non-manifold shapes of both linear surfaces and parametric surfaces in the unified way. 给出了改进的辐射边拓扑数据结构,统一表示线性网格曲面和参数曲面以及流形和非流形形体。
- The geometric model from CAD system contains a great deal of trimmed parametric surfaces, and the adjacency relation between trimmed surfaces is very complex. 在板料冲压成形模拟分析中 ;从 CAD系统输入的模具的曲面模型包含大量的裁剪参数曲面 ;曲面之间的相邻关系复杂 .
- The B-Splines surfaces fitting algorithm with Multilevel B-Splines is also studied.And a modified fitting method about sparse meshes is put forward. 研究了基于多层次B样条的曲面拟合,并且针对稀疏网格模型拟合曲面的起皱现象给出了改进方法。
- Semi-Adaptive Triangulation of Parametric Surface 参数曲面的拟自适应三角化
- Application of discrete data cured surface fitting 散点数据曲面拟合的应用
- The CAD-free system includes a surface extractor, a surface fitter, a control net perturbator, and a surface generator. 这种免CAD系统包含一个面抽取器,一个面装配器,一个控制扰动器,以及一个面的生成程序。
- Study on Curve Surface Fitting Method Based on ANN 基于神经网络的曲面拟合方法研究
- Algebraic curve and surface fitting 代数曲线和曲面拟合