采用了基于多边形凸包的方法提取弦线。
Based on polygon convex hull method, the chord line is extracted.
求平面点集的凸包是计算几何的一个基本算法。
Constructing convex hull of planar point set is a basic algorithm in computational geometry.
运用于图像中轴变换、凸包逼近、矩边逼近等算法。
It USES techniques of image skeletonization, convex hull convergence and rectangular frame convergence algorithms.
针对凸包流动分离主动控制开展了参数化数值研究。
A series of numerical parametric studies on active control of separation flow over a hump model are presented.
植物非光滑叶表形态中凸包处硬度较凹坑处的硬度大；
The hardness of convex hull is higher than that of pit portion on the sculptured leaf surfaces.
凸包问题是计算几何的基本问题之一，在许多领域均有应用。
Convex hull problem is one of the fundamental problems in computational geometry, and is used in many fields.
是的，凸包是计算几何的核心问题，也是一种基础性的几何结构。
Yes, convex hull is at the kernel of computational geometry and serves as a fundamental geometric structure.
使用那些凸包来估计所述第一和第二时钟之间的时钟偏移和歪斜。
The clock offset and the skew between said first and second clocks are estimated using those convex hulls.
此机可根据客户要求还能在纸上打凸包，特别适合生产特种大空滤。
The machine can also make convex hull on paper which is especially suitable for the heavy duty air filter.
然后进一步详细地给出了一种改进的求平面任意散乱点集凸包的新算法。
The purpose of step is to partition planar point set and to simplify the calculation distance from a point to a straight line.
平面点集作为一种常见数学模型，其上常做的运算是求其凸包和三角网格。
Two kinds of common operation on the set of nodes in a plane are calculating its convex hull and triangulation, and usually the algorithms are studied independently.
在优选实施例中，通过识别第一和第二凸包之间的最佳时钟线来进行此估计。
In a preferred embodiment, this estimation is made by identifying a best clock line between the first and second convex hulls.
同时在对多边形填充过程中使用了凸包算法，解决确定多边形顶点顺序问题。
At the same time in the polygon filling process , the Graham algorithm is used to determine the polygon vertex order.
对系统所采用的肤色分割、凸包计算、指尖检测等算法进行研究，并完成硬件设计。
Its applied algorithms such as skin color segmentation, convex hull computation, fingertip detection and etc have been investigated and the hardware has been designed.
提出了利用凸包思想求取障碍距离的方法，并对该方法进行了理论与实践上的探讨。
The method of calculating obstacle distance was brought forward based on the principle of convex hulls in this paper, and was discussed theoretically and practically.
最小凸包是计算几何中得到广泛研究的问题之一，在地理信息系统中也有着广泛应用。
The minimum convex closure is one of the widely studied problems in science of computing geometry, as well as extensively applied in many fields of GIS.
第四，利用闭凸包收缩原理和特征空间分离度量方法对决策树多类分类算法进行了改进。
Via abstracting this pre-information, the blindness of choosing the classifier can be reduced and existing method of multi-classification can be advanced to improve their accuracy of classification.
首先求出acf和其凸包的差函数，然后搜索差函数的最大值，从而得到进动周期的估计值。
The difference function between the ACF and the convex hull is obtained, and then the precession period is estimated by searching for the maximum value of the difference function.
此外，本文设计了自动排料算法中其它一些相关的图形学算法，如凸包算法和合成多边形算法。
Besides, the paper designs some algorithms which are related with graphic algorithms in nesting algorithm, for example hull algorithm and composite polygon algorithm.
本论文以凸体为研究对象，主要涉及两个方面的内容：平面凸集的凸包为闭集的充分必要条件；
The paper is concerned with two aspects:A necessary and sufficient condition for convex hull of a set in E2 being closed;
最后，介绍了目前流行的两种投票法，并针对现有投票法的问题和缺点，提出一种最小内凸包的算法。
To solve the problems, the minimum internal convex hull algorithm is proposed in this paper. The method holds both low-computational costs and faster calculation speed .
具体地，对于平面上的任意一组点，请构造出对应的凸包，并在经过编码转换之后输出所有极点的信息。
Specifically, given a set of points in the plane, please construct the convex hull and output an encoded description of all the extreme points.
于是想到将微观凸包非光滑(金刚石)和宏观凹坑非光滑复合来设计钻头，如此可以实现高效耐磨的目的。
Thus it is conceived that the bit can be developed by coupling with micro convex non-smooth material (diamond) and macro smooth pit, which may lead to the high efficiency and strong wear.
提出了一种新的基于坐标旋转的凸包算法，并将其运用在对圆度误差的最小外接圆评定算法中，减小计算量。
The author proposed a new rotating coordinates convex hull algorithm, and using it in assessing roundness to reduce the computation.
提出了一种基于有序简单多边形的平面点集凸包快速求取的改进算法，新的算法能够避免极值点重合的问题。
This paper improves the fast convex hull algorithm of planar point set based on sorted simple polygon.
为了真实重现受害人的3维容颜，提出了一种基于螺旋CT的3维颅骨重建影像的3维凸包软组织厚度计算方法。
In order to reconstruct 3D appearance truly, a new method of calculating parenchyma thickness is put forward in this paper. It is mainly based on convhull method with spire CT.
但是凹坑形仿生非光滑传动滚筒随着实验时间的增长，其增摩效果受到一定的影响，效果不如凸包形仿生非光滑传动滚筒。
But as experiment time increases, the effect of increasing friction for driving drum with concave covering-layer is decreased, and much lower than the driving drum with convexity covering-layer.
详细阐述了CSP的几项主要的关键技术：即结构设计技术，凸点制作技术，包封技术和测试技术。
We particularly expatiated some key technology about CSP: structure designing technology, Solder Bumping making technology, envelopment technology, testing technology.
他带着一个饰有浮凸的姓名首字母的皮公事包。
他带着一个饰有浮凸的姓名首字母的皮公事包。
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