立体投影

DP lightning 45 HD-3D adopts the latest Dark Chip 3 chip DLP technology and reaches 2k(2048*1080) definition. Its active 3D technology can show more brightness and more perfect picture than passive 3D.technology.

DP Lightning 45HD-3D 运用了最新 Dark Chip 3片 DLP 技术，达到2K （2048×1080）分辨率，其主动立体功能相对于被动立体投影能展现更大亮度、更佳完美的3D 影像。

And an exact maximum likelihood registration algorithm is presented based on three-dimensional plane. This method contains two sets of partially separable variables (the actual target positions and the sensor registration errors) and provides a two-step recursive optimization algorithm to ensure fast convergence. Described by expressions:(5.26)?(5.39). It resolves the problems on Multiple-platform.

同时本文还推导出了三维立体投影的极大似然配准算法，算法包括两组部分可分的变量：实际目标位置和传感器的配准误差，利用两步递归优化算法对收敛速度进行了优化处理，实现过程可参阅式5.26～5.39，此算法解决了不同平台内多传感器配准过程中所存在的问题。

A stereographic projection is an ancient method of mapping points on the surface of a sphere to points on a plane.

立体投影法：这是一个古老的方法，我们可以用这个方法把一个球形上的表面地图投射到一个平面上。

The Earth is represented in stereographic projection on a flat plate, called the mater.

地球通过立体投影法在一个平面上被展示出来，这被称为 Mater 。

Our method can avoid fold-overs by the stereographic projection and always yields bijective mappings.

该方法能够避免立体投影出现三角形折叠的情况，保证最后的映射是双射。

Second, for removing the influence, we develop the least squares method based on the stereographic projection implemented on a three-dimensional plane. It is described by the expressions:(4.35挆4.39). This method resolves some problem in Multi-sensor alignment on the same platform when the attitude errors are relatively small.

其次为了克服基于二维区域性平面中立体投影所产生的影响，本文推导了基于三维立体投影的最小二乘配准算法，其实现过程见式4.35～4.39，在传感器姿势误差较小的情况下，此算法解决了基于同一平台的多传感器配准中存在的问题。

An initial spherical parameterization is firstly constructed by lifting planar parameterization to the sphere through the stereographic projection. Then we introduce an efficient approach based on bary centric coordinate to improve the initial spherical parameterization. At last, a uniform spherical parameterization is generated by a Moebius transformation.

通过立体投影将现有的平面参数化方法推广到球面上，得到一个初始的球面参数化；为了减小变形，引入质心坐标进行全局优化；最后用Moebius变换均匀化最终的球面网格。

The round maps are polar stereographic projections that show the north or south pole in the center of the map and the equator at the edge.

这张圆形图像是用极地立体投影拍摄的，北极或南极显示在图中央，赤道在边缘。

For the next step, survey team made a series of contour on rock mess model at 4cm regular step in the direction Z and Y axes, which be a standard of analysis on gap, step and discontinuity of joint.

b 成图后，可以进行一系列后处理，如启动自动处理程序，绘制你感兴趣节理的立体倾向网格图、上下半球立体投影、绘制倾向和正交矢量图。

Stereo display of 3D model in Vega environment is realized through EON ICATCHER system by programming, which applying principles of stereo display, namely parallaxes, adopting negative parallaxes and the Quad-Buffered Stereo function of OpenGL.

利用立体显示原理，即双目视差原理，采用双目视差中的负视差，并通过OpenGL的四组缓冲立体(Quad-Buffered Stereo)功能，编程实现Vega环境下的三维模型在EON ICATCHER立体投影系统中的立体显示。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。