1、

The content of this part included the general theory of parameter curve, B é zier curve theory and its algorithms, B-spline curve theory and its algorithms, NURBS curve theory and its algorithms.

内容包括参数曲线的一般理论、Bézier曲线理论和算法、B样条曲线理论和算法、NURBS曲线理论和算法。

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2、

The theory and experiment of curve and face of NURBS were explored and validated by experiment.

对NURBS的曲线曲面造型进行了理论和实验探讨,并通过实验加以验证。

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3、

On RCS Computation Using Asymptotic PO with Surface Modeled by NURBS

基于NURBS建模和渐近物理光学的RCS计算研究

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4、

Based on the NURBS technique and the theory of partition for geologic body, the 3-D engineering geologic model for underground structures is established.

工程区域地质条件是影响地下洞室群布置最主要的因素。本文基于NURBS技术和地质结构单元实体分割理论,建立了工程地质三维整体模型。

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5、

Geometric description and mesh generation for three dimensional space surface based on NURBS

基于NURBS方法的三维型腔曲面的几何描述及网格域的生成

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6、

The mathematical model of steam vane is established with 2 × 3 degree nurbs method to improve the quality and efficiency of vane machining. The expression of three-dimensional point and unit vector matrix are put forward and the numeric show of vane is realized.

为了提高汽轮机叶片数控加工的质量和效率,用2×3次非均匀有理B样条方法,建立了叶片的数学模型,推导了其三维点和法矢量矩阵表达式,实现了叶片的数字化表示。

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7、

A NURBS surface fitting method with tight tolerance for wrap-around models is presented.

提出了一类卷曲模型的NURBS曲面建模新方法。

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8、

Non-Uniform Rational B-Splines ( NURBS) has been widely used in computer design for some time and CAD/ CAM systems could mathematically define virtually any shape with smooth curves.

非均匀有理B样条(NURBS)曲线自提出以来已经在计算机设计领域得到广泛应用,几乎任何形状的平滑曲线都能在CAD、CAM系统中通过数学建模表示出来。

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9、

Real Time Correction of Atmospheric Refractive Error Based on NURBS Curve Interpolation

基于NURBS曲线插值的实时大气折射误差修正

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10、

A leg motion modeling method based on NURBS free-form deformation

基于NURBS自由变形的腿部运动建模方法

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11、

In fact, NURBS is thought about as the index point of a CAD software.

事实上,现在通常将NURBS作为衡量CAD软件是否优秀的指标之一。

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12、

Although it is continuous in one single NURBS, in modeling system It is always needed to adjoin two different patches together.

单片NURBS曲面具有较好的参数与几何连续的,性质,而在实际造型系统中,经常需要将不同的曲面片加以拼合。

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13、

A new method is presented for the data point parameterization in NURBS curve interpolation.

讨论并分析了在NURBS曲线插值中设置数据点参数的一种新的方法。

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14、

Study and Development on Free-Form Surface Reconstruction Technology Based on NURBS

基于NURBS的自由曲面重构技术研究及开发

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15、

Calculation of Geometric Properties for Free-form Surface Based on NURBS

基于NURBS的自由曲面体三维几何特性计算

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16、

Data riddling on reconstruction of NURBS sur-faces in reverse engineering is a generalized conception.

逆向工程中nurbs曲面重构的数据筛选是一个广义的概念,它所涉及的内容很广泛,包括数据获取过程中的处理

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17、

In this paper, a calculation based on de Boor algorithm for the real-time interpolation of NURBS curves is presented.

提出了一种基于德布尔递推算法的NURBS曲线实时插补方法。

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18、

The de-noise processing in free-form surface reconstruction based on wavelet transform and NURBS

基于小波变换和NURBS的自由曲面重构的去噪处理

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19、

The Theoretic of NURBS Sculpting and its Applications in Production Plastic Design

NURBS造型理论及其在产品造型设计中的应用

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20、

In fourth chapter, firstly we analyze theory of curve saw working and give a theory, which approach NURBS by lines.

第四章中首先分析曲线带锯的锯切工艺,之后我们给出了用折线逼近NURBS的理论基础并且我们给出了误差分析。

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