查询词典 spline

The road network segmentation results show that the improved B-spline Ribbon Snake can obtain a more accurate and smoother segmentation and is more robust to noise.

从改进的B样条Ribbon Snake的道路网分割结果可以看出，分割的结果更加平滑，精度更高，对噪声具有更好的鲁棒性。

Arithmetics and implements of function modules are indicated as follows:In the modeling module, the twist ruled surface formed blade is constructed using B-spline interpolation technique.

造型模块中，采用三次B样条插值的技术，构造出叶片盖盘与轴盘曲线，建立了扭曲直纹面形式的叶片型面。

Then, the skull polygon model is sampled to obtain representative scattered point set. The thin-plate spline interpolation technology is used to reconstruct it to gain surface model of titanium prosthesis.

然后，采样该三角网格模型获得代表性散乱点集，使用薄板样条插值技术重建得到钛板假体表面形状模型。

Because of its interpolation property and describing sectionally, parametric cubic spline method can be very compatible with FEM .

由于参数样条的插值特性和分段描述，它能和有限元分析时的结构离散化保持协调一致，因而曲面造型程序和有限元分析程序之间的数据传递是很方便的。

During building 2D model, I use the concepts of point, segment, line and plane, the segment can be formed from points, then line can be formed from segments, the closed curved plane can be obtained by around lines, and finally the 2D model can be built by closed curved plane; I express the un-smooth stratum or fault by linear fitting and express the smooth stratum or default by cubic spline fitting segmentally, in this way I can describe the variation feature of 2D interface properly.

在二维建模中，引用点、段、线、面的概念，即由点形成段，由段形成线，由线围成封闭面，封闭面构建成二维模型；对表示二维地层和断层的界面线，用线性拟合表示非光滑性地层或断层面，用分段三次样条拟合表示光滑性地层或断层面，恰当地表达了二维界面的变化特点。

It offers the idea according to problem faced, considering the good character of the ends,the ajusted cubic B-spline curve is used to fit ship lines.it finds out the control vertexs according to a sequence of given points,and then, through particular formula,each point in the curve could be worked out.

针对面临的问题，提出了自己的思路，在数学计算方法上，由于三次准均匀B样条曲线良好的端部性质，这里用它来拟合船舶型线，首先根据所给的初步型值求出其控制顶点，然后根据相关公式进行插值便能得到曲线上的所有插值点。

A divided B-spline surface model of shoe tree is founded, which offered the sound tree model for the shoemaking CAD/CAM. The calculating equation for control points of the bottom of the shoe tree is established for first time. A new method called LID to construct lateral and front surfaces of the shoe hell is proposed which furnishes the possibility for the hell CAD.

本文建立的楦体分块B样条曲面模型，为制鞋CAD/CAM提供了良好的楦体模型；首次建立并给出了楦底控制点计算方程和楦底分块Bezier曲面模型，奠定了鞋跟鞋底造型的基础；文中提出的设计鞋跟跟口面和跟侧面的LID方法，为鞋跟造型提供了实现可能性。

When you think of Spline Modeling in LightWave 3D you think Larry Shultz, he is the master…or Splinegod.

当你觉得在你认为的LightWave三维拉里舒尔茨，他是主。。。

Instead of the simple broken line that level to volume.we construct cubic smoothing spline based on stowage capacity table to calculate volume. From its principle and route map, we can see that it has a good precision

此液位容积精确监控系统不仅可应用于船舶液货运输业，对于其它行业实现液位容积精确测量有很好的借鉴作用，具有一定的经济效益和社会效益。

To fulfill the need of the application of RP technique in medical domain, reverse CAD modeling from medical cross sections is systematically studied in this dissertation. Firstly, Some algorithms related to the research of this dissertation are studied. New algorithms for orientation and inclusion test for simple polygon, an error constrained automatic faring algorithm for B-spline curve and a theorem regarding the termination criterion for subdivision of triangular Bézier patch are proposed. Then based on similarity between contours of adjacent sections, a methodology for surface reconstruction from cross sections is presented. Finally, a virtual measuring method is proposed.

本文针对RP技术在医学领域应用的需要，系统研究了基于医学断层轮廓数据的反求CAD建模理论和方法：(1)在基础算法研究部分，提出了简单多边形方向及点在多边形内外判断的新方法、三角Bézier曲面片离散的误差控制定理和一种带误差约束的B样条曲线的自动光顺方法；(2)提出了一种基于相邻层轮廓相似性的医学断层轮廓数据曲面重构方法；(3)提出了一种称为"虚拟测量"的曲面模型处理方法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。