球面投影

许多工程师对球面投影法有畏难情绪。

Many engineers shy away from spherical projection methods .

把鱼眼图象变换成透视投影图象，球面投影是一种简单有效的方法。

Spherical projection is a simple and effective method to transform a fisheye image to a perspective projection image .

在分析方位角与SAR目标分布关系的基础上，提出了基于超球面投影空间的特征提取方法，通过超球面投影获得SAR样本的全方位分布特性，进而消除了方位角对SAR目标识别的影响。

With the analyzing on the relationship between azimuth and SAR target distribution , another feature extraction method based on hyper-sphere projection space is proposed .

通用极球面投影格网我们作一个称为球极平面射影的映射。

We make use of a mapping known as stereographic projection .

基于球面投影的单站地面激光扫描点云构网方法

Spherical Projection Based Triangulation for One Station Terrestrial Laser Scanning Point Cloud

卫星轨道坐标球面投影地图的计算机绘制

Map Drawing of Spherical projection of a Satellite Orbit Coordinate with a Computer

球面投影的研究

Study of the spherical surface projection

尤以在《环中黍尺》书中对球面投影理论、作图方法及应用等均有精辟论述。

Mei made a penetrating exposition about the spherical surface projection theory , drowing methods and applications .

球面投影的研究试论球面距离

Study of the spherical surface projection Analysis of the Distance between the Two Points on Spherical Surface

另一种是利用球面投影，通过对成分数据的非线性降维，得到建立预测模型的方法。

Sphere projection , a non-linear approach for dimensionality deduction , is used in the second method to build a forecast model .

本文给出了粗略匹配在不同图像上的表现，以及柱面和球面投影对粗略匹配精度的影响。

The performance of rough match on different images , and the influence of cylindrical and spherical projection on rough match are given .

按照这样的分布规律统计空间上各极点的概率密度，并用球面投影原理和方法形成密度图。

According to this spatial distribution , the probability density of each pole is calculated , thus forming a density map with principle and method of the spherical projection .

其二，对球面投影的多眼点非线性失真问题进行了详细的分析，并通过非线性校正方法，解决了飞机模拟器的多眼点视景仿真的重大技术难题。

The other is that , multi-eyepoint nonlinear distortion correction of spherical projection is analyzed specifically and nonlinear correction method is found , that settles very important technical problems of multi-eyepoint scene simulation .

基于球极投影保持PH性质这一特性，通过球极投影把球面数据投影到平面上，构造一条平面PH曲线。

Based on the stereographic projection that preserves Pythagorean-Hodographs , a spherical rational PH curve is constructed to solve this problem .

一种新的球面三角投影：等角比投影（EARP）

A New Projection for Spherical Triangle : Equal Angle Ratio Projection ( EARP )

一种基于球面透视投影约束的鱼眼镜头校正方法

Fisheye Lense Distortion Correction Using Spherical Perspective Projection Constraint

作为研究的第一步，出于进行EUVL原理及系统设计、光学元件的制备、系统集成、掩模曝光实验等相关技术研究目的，采用球面Schwarzschild微缩投影物镜是比较切实可行的技术方案。

It might preferable , however , to use shperical mirror for the first step studies of EUVL in a series investigation of system design , component fabrication , assembly technique and experimental process .

仰仪是采用直接投影方法的观测仪器，非常直观、方便。例如，当太阳光透过中心小孔时，在仰仪的内部球面上就会投影出太阳的映像，观测者便可以从网格中直接读出太阳的位置了。

Employing projection ， the instrument is simple and convenient for observation.For example ， when the sun-light goes through the hole ， it will project the image of the sun onto the internal spherical surface.Then the observer can read the sun 's position from the grids .

大口径高次、离轴非球面干涉测量中投影畸变的标定方法

Calibration method for projection distortion in interferometric testing high order and off-axis aspheric surface with big aperture

根据球面三角理论和投影理论知识，用计算和图示两种方法给出了求解航程中最短路径和保证飞机在此路径中航行的条件。

Based on the theories of spherical trigonometry and theoretical knowledge about projection , this paper introduces two methods ( calculation and diagrammatic representation ) for finding the shortest path in a flying voyage and the conditions to ensure a plane to fly in this path .

然后，系统地阐明了点、各种球面曲线以及球面的园弧投影方法和性质。

It also expounds such ar projective methods and properties for points various spherical curves and sphere systematically .

提出了利用正多面体顶点分布来剖分球面，得到球面上物体的投影点，利用这些投影点得到物体的二维投影。

This paper proposes the method of using equilateral polygon to subdivide the surrounded spherical surface , so as to obtain the projection point and get the two-dimensional projections of 3D models .

围绕这一问题，建立了球面到椭球面的几种对应关系，从而将球面网格投影到椭球面上；

To solve this problem , the paper establishes several corresponding relationships between sphere space and ellipsoid space by which the grids are projected from the formal to the latter .