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b-spline model
相关语句
  b样条模型
     On Detection of Prominent Point Using B-Spline Model
     基于B样条模型的曲线特征点检测法
短句来源
     In the technique of picture feature extraction, we import B-Spline model with shape parameter, and propose a method to extract prominent point using it.
     在图像特征提取技术上,引入带形参的B样条模型,给出了基于形参均匀B样条模型的角点提取算法。
短句来源
     A general contr oller design principle is given based on the linear B-spline model.
     以线性B样条模型为例介绍了控制器设计的一般原理。
短句来源
  b-样条模型
     Optimal tracking control of the output probability density functions:square root B-spline model
     输出概率密度函数的最优跟踪控制:均方根B-样条模型
短句来源
  “b-spline model”译为未确定词的双语例句
     Four models are used to regress treasury notes yield curve, which indicates the B-spline model can best regress the yield curve.
     并进行实证分析,分别用四种曲线模型拟合国债收益率曲线,实证研究表明B-样条曲线对当前中国国债收益率曲线拟合效果较好。
短句来源
     In order to overcome these weaknesses, we use quartic B-spline structure the yield curve, which indicates the less node cubic B-spline model is better under the situation that do not use the forward rate curve, if need to make use of forward rate curve to carry on the economy analysis, the suggestion use quartic B-spline method.
     为克服这些缺点,我们用四次B-样条构造收益率曲线,实证表明能克服三次B-样条曲线上述缺点。 因此,在不使用远期利率曲线情况下较少节点的三次样条模型是较好选择,当需要利用远期利率曲线进行经济分析时,建议使用四次B-样条法。
短句来源
     In the present study, color-Doppler Ultrasonography was introduced in 11 patients with primary heptoma post TAE and the dynamies of tumor arterial flow was evaluated and compared before and arter intravenously administration of Dobutamine on the basis of Windkessel model and its relevent electric circuit, and B-spline model.
     本文采用超声多普勒技术记录肝癌动脉血流速度,以动脉系统血流动力学的气室模型及其等效电路为基础,并对血流速度曲线作B样条函数模似,从而计算出肝癌动脉的阻力,为肝动脉栓塞术后肝癌动脉的栓塞程度提供了较为理想的评价手段。
短句来源
     The result also reveals that B-spline model performs better than other models synthetically in precision of fitting prices,curve smoothness and stability.
     B-样条法在利率期限结构的拟合精度、曲线光滑性及平稳性方面的综合效果最好。
短句来源
     The result also reveals that B-spline model performs better than other models integralively in precision of fitting prices,curve smoothness and stability.
     B-样条法在利率期限结构的拟合精度、曲线光滑性及平稳性方面的综合效果最好。
短句来源
  相似匹配句对
     Model.
     模型的适用范围。
短句来源
     Axial-Mapped Model of B-Spline
     B样条轴映射模型的构造方法
短句来源
     model.
     模型。
短句来源
     A B-SPLINE ACTIVE CONTOUR MODEL
     一种B-样条主动轮廓线模型
短句来源
     Scientific visualization with spline interpolation model
     基于样条模型插值在科学可视化上的应用
短句来源
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In the present study, color-Doppler Ultrasonography was introduced in 11 patients with primary heptoma post TAE and the dynamies of tumor arterial flow was evaluated and compared before and arter intravenously administration of Dobutamine on the basis of Windkessel model and its relevent electric circuit, and B-spline model. The parameters of arterial im pedance and the flow velocity were proved to be sensitive to the evaluation of the ocelusive status of the tumor artery and we coneluded that it...

In the present study, color-Doppler Ultrasonography was introduced in 11 patients with primary heptoma post TAE and the dynamies of tumor arterial flow was evaluated and compared before and arter intravenously administration of Dobutamine on the basis of Windkessel model and its relevent electric circuit, and B-spline model. The parameters of arterial im pedance and the flow velocity were proved to be sensitive to the evaluation of the ocelusive status of the tumor artery and we coneluded that it is necessary for detection of tumor arterial flow to administrate Dobutamine intravenously,2)the different velocity pattern and difrerent length and area indicated different flow impedance.

本文采用超声多普勒技术记录肝癌动脉血流速度,以动脉系统血流动力学的气室模型及其等效电路为基础,并对血流速度曲线作B样条函数模似,从而计算出肝癌动脉的阻力,为肝动脉栓塞术后肝癌动脉的栓塞程度提供了较为理想的评价手段。本文同时还比较多巴酚丁胺使用前后肝癌动脉血流的变化,从而提高了肝癌动脉血流评价的灵敏度。

A method to detect prominent points of digital curves is presented. It introduces a B spline model to approximate the original curve so that the curvatures can be accurately estimated with the analytical expression and then the prominent points can be determined from the curvature distribution. Moreover the B spline approximation makes its noise insensitive to detect the prominent points, due to its smoothness in the curve fitting which does not have shrinkage effects like Gaussian function convolution....

A method to detect prominent points of digital curves is presented. It introduces a B spline model to approximate the original curve so that the curvatures can be accurately estimated with the analytical expression and then the prominent points can be determined from the curvature distribution. Moreover the B spline approximation makes its noise insensitive to detect the prominent points, due to its smoothness in the curve fitting which does not have shrinkage effects like Gaussian function convolution. Experimental results show the validity of this method.

提出了一种基于 B样条模型的曲线特征点检测法。该方法首先用 B样条函数对原始曲线进行逼近 ,得到原始曲线的分段解析表达式 ,然后利用曲线曲率分布来确定其特征点。 B样条曲线分段解析的特点提高了曲率估计的精度 ,进而使特征点检测的准确度也得到提高 ,同时 B样条曲线拟合过程在一定程度上起到了对原始曲线的平滑作用 ,可抑制噪声对特征点检测的影响 ,并且这种平滑不具有常规高斯平滑的萎缩效应。实验结果证明了本文方法的有效性。

Deformable models are of great importance for contour extraction and surface reconstruction, which cause the deformable models deform to the object contours due to simulated external force.Deformable B spline models can share the merit of the popular used B splie. From the Lagrangian mechanics, the dynamics equation of deformable B spline curve and surface is derived. Its finite element solution is studied including the finite element generation and element matrix calculation. A example...

Deformable models are of great importance for contour extraction and surface reconstruction, which cause the deformable models deform to the object contours due to simulated external force.Deformable B spline models can share the merit of the popular used B splie. From the Lagrangian mechanics, the dynamics equation of deformable B spline curve and surface is derived. Its finite element solution is studied including the finite element generation and element matrix calculation. A example is given to verify its validity.

可变形模型对于轮廓提取及表面重建具有重要的意义。表面重建及轮廓提取的过程就是可变形模型在模拟外力的作用下朝着目标轮廓变形的过程。基于B样条的可变形模型结合了几何造型中广泛使用的B样条的优点 ,B样条方法是当前自由曲线和曲面描述中最广为流行的技术 ,作者从拉格朗日动力学方程出发 ,推导了可变形B样条曲线曲面模型的动力学方程。在对动力学方程的有限元求解中 ,对其单元划分及单元矩阵的求解过程进行了研究。通过程序算例 ,验证了有限元求解的有效性。

 
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