Description: 综合球坐标系和直角坐标系的性质，将三维坐标映射到一个包围该三维直角坐标系的球面的切平面上，实现三维到二维的映射-Integrated spherical coordinate system and the nature of Cartesian coordinate system, three-dimensional coordinates will be mapped to a siege of the three-dimensional Cartesian coordinate system of the spherical tangent plane, the realization of three-dimensional to two-dimensional mapping Platform: |
Size: 3899392 |
Author:Eric |
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Description: 基于光线投射变换的三维模型特征提取,以三维模型的重心为球心的最小包围球剖分成一系列同心球壳，落入每个球壳的射线与模型表面的交点定义一个球坐标方程。一般地，对于每条射线，它与模型表面的多个交点同时落入一个球壳的几率大大降低了，这样就可以尽可能的减少信息的丢失。-Transform-based ray-casting feature extraction of three-dimensional model to three-dimensional model for the core focus of the post-mortem into the smallest ball surrounded by a series of concentric spherical shell, falling into the hands of each spherical shell model of the surface-ray intersection with the definition of a spherical coordinate equation. In general, for each ray, the surface of it with the model number of intersection points falling into the hands of a spherical shell at the same time greatly reduces the probability that such a reduction could be as much as possible the loss of information. Platform: |
Size: 1310720 |
Author:周光有 |
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Description: ee~ 5-OpenGL视点坐标系与世界坐标系的相互对应关系，建立以视点系参考点为中心的球坐标，提出一种
新的三维场景旋转算法模型．该模型几何意义非常明确，在拖动过程中可随时调整灵敏度，在同等旋转条件下三维变化
导矢保持恒定，操作方便易行，为人机三维旋转操作提供了新的有效途径。-ee ~ 5-OpenGL viewpoint coordinate and world coordinate system corresponding relationship between each other and establish a reference point as the center point of view series of spherical coordinates, a new algorithm for three-dimensional scene rotation model. Geometric meaning of the model is very clear, at any time in the process can drag to adjust the sensitivity, the same three-dimensional rotating conditions, changes in lead vector remains constant, convenient operation and easy, three-dimensional rotation operator for the machine provides a new effective way. Platform: |
Size: 197632 |
Author:john |
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Description: 二维泊松方程求解器，主要使用循环约代法求解各种位形泊松方程-FISHPACK contains a collection of Fortran77 subroutines that solve second- and fourth-order finite difference approximations to separable elliptic Partial Differential Equations (PDEs). These include Helmholtz equations in cartesian, polar, cylindrical, and spherical coordinates, as well as more general separable elliptic equations. The solvers use the cyclic reduction algorithm. When the problem is singular, a least-squares solution is computed. Singularities induced by the coordinate system are handled, including at the origin r=0 in cylindrical coordinates, and at the poles in spherical coordinates. Platform: |
Size: 176128 |
Author:Chaofeng |
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Description: IAU 的标准基本天文程序库SOFA 给出Fortran 版和C 版两个基本天文运算的库函数，最新版SOFA 补充了IAU 在2006 年公布的岁差模型。SOFA 由两部分组成：天文库和矢量、矩阵运算库。其中前者有109 个子程序，可以进行天文历法计算、时间计算、星历表计算、岁差章动计算、恒星空间运动计算和主要星表系统的转换，后者有52 个子程序，功能则是矢量和矩阵的各种操作，当然其中包括了球面坐标系统的变换-IAU standard basic astronomical library SOFA Fortran and C version gives two basic astronomical arithmetic library functions, the latest version of the SOFA supplement published in 2006 IAU precession model. SOFA consists of two parts: day library and vector, matrix arithmetic library. There are 109 sub-programs in which the former can be astronomical calendar calculations, calculation of time, ephemeris calculations NUTATION calculated stellar space motion calculation and conversion of major star catalog system, which has 52 sub-program, function is the vector sum a variety of matrix operations, of course, which includes the spherical coordinate system transformation Platform: |
Size: 11551744 |
Author:抄书 |
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Description: 详细介绍了鱼眼图像畸变产生原理，校正方法。给出了MATLAB设计原理。-In detail this paper introduces the principle of fisheye image distortion correction method. Calibration the MATLAB source code is given, and mainly adopts spherical coordinate positioning method for correction. Platform: |
Size: 3916800 |
Author:zhangqiang |
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Description: 鱼眼畸变矫正的matlab实现(含GUI)，有几种实现方法的可供选择，主函数fish_3D_2014.m包括：2D球面坐标法，3D投影法，金字塔3D投影法-Matlab achieve fisheye distortion correction (including GUI), there are several implementations to choose from, the main function fish_3D_2014.m include: 2D spherical coordinate method, 3D projection, 3D projection pyramid Platform: |
Size: 559104 |
Author:陈谋奇 |
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Description: 基于opencv ，对获得的鱼眼图像进行显示，并用中心点标定的方法进行图像的矫正-Based on opencv, fisheye images obtained on display, with the center of the calibration method for image correction Platform: |
Size: 28876800 |
Author:孙亭 |
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Description: 在球坐标系 下产生球面上均匀分布的随机坐标点，给出其直接抽样方。此程序用16807产生器产生-Generates a random coordinate points uniformly distributed in the sphere spherical coordinate system, given its direct sampling party. This program with a 16807 generator generates Platform: |
Size: 1579008 |
Author:guanzy |
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Description: 求流函数和速度势函数，采用球坐标系，使用网格点资料-Demand flow and velocity potential function using the spherical coordinate system, using a grid point data Platform: |
Size: 2048 |
Author:flash |
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Description: 控制小球在球盘上的位置（即在球盘坐标系中的坐
标），实现对小球位置的闭环控制，实时获取小球在球盘坐标系中的实
际反馈位置值。(Control the position of the ball on the disk (i.e., sitting in the spherical coordinate system).
In order to realize the closed-loop control of the ball position, the real time acquisition of the ball in the spherical coordinate system is realized.
International feedback position value.) Platform: |
Size: 8192 |
Author:ID好吧 |
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