剖点图形

This paper develops 3D graphics with OpenGL and draws three-dimensional entities visualization by spatial point set .

介绍了采用空间点集绘制实体的方法，生成真实感较强的三维实体图形的过程和三维实体的交互式旋转、缩放、多方位剖切等可视化显示。

According to change the parameter of the power cables (power cables length, account step, impulse width, fault location).

通过改变仿真中的参数(电缆长度、剖分段数、脉冲宽度、计算步长、故障点位置)，来比较得到的仿真波形，计算故障点的距离，并从仿真图形中总结出波形的规律。

The parameters including cable length, number of unite divided, impulse width, account step and fault location are changed to get different waves. Compare these simulation waves and calculate the distance of fault point.

通过改变仿真中的参数(电缆长度、剖分段数、脉冲宽度、计算步长、故障点位置)，来比较得到的仿真波形，计算故障点的距离，并从仿真图形中总结出波形的规律。

Triangulation of the point-set in the plane is one of the basic algorithms in computer graphics.

平面点集的三角剖分是计算机图形学中一个比较基本的算法，它的用途非常广泛。

Data pre-processing technologies such as singular points elimination, registration and radius compensation are studied. Base on chord high difference algorithm, a new one called chord high difference-ratio algorithm is proposed to improve veracity and robusticity of singular points elimination. Then, a registration algorithm based on local surface reconstruction is proposed, which avoids infaust influence coming from single reference point error.

在弦高差法的基础上，提出了全新的弦高差—比法，提高了异常点剔除的准确性和柔韧性；提出了一种基于局部图形重构的重定位方法，该方法通过对特征球的最小二乘拟合，消除了单一参考点的精度对重定位的影响；在此基础上对重定位的误差进行了详细的分析，给出了精确的误差值，从数学的角度保证了重定位的精度；在三角网格法的基础上提出了基于Delaunay三角剖分的半径补偿新方法，有效改善了补偿矢量的计算效率和准确性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。