Quadric surface fitting usually adopts the second way and will be discussed later.
因此本文详细论述由点云拟合成二次曲面的方法。
参考来源 - 逆向工程中的点云处理Quadric surface fitting method based on feature parameters and constraints and solid features extracting by neural net method are used in accurate reconstruction of CAD model.
提出了基于约束识别的规则二次曲面特征拟合的方法和基于神经网络直接由测量数据实体特征直接提取的技术。
参考来源 - 逆向工程中基于特征约束模型重建理论与方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
This paper proposed to use immune algorithm based on real-number-coding to extract quadric surface.
提出了基于实数编码免疫算法针对离散数据点进行二次曲面提取的方法。
The common method to quadric surface equation is to get the Normal Component first, and then write out the equation through dot method.
求切平面方程的一般方法是先求切平面的法向量(借助偏导)，再用点法式写出切平面的方程。
To solve the problem of quadric surface reconstruction in reverse modeling for mechanical parts, a two-step fitting algorithm was presented.
针对机械零件反求建模过程中常见二次曲面的表面重建问题，提出了曲面拟合分步计算法。
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