投影矩阵

Since we defined the frustum, we know the angle at which the sides of the frustum meet - this is the field of view we used to create the projection matrix in the first place.

确定好锥截体，我们就知道锥截体顶角的大小—这是我们在第一个地方用来创建投影矩阵的视场。

In order to improve calibration precision,projection matrixes of camera were obtained by optimization based on Householder orthogonalization transformation which has character of not changing the length of transformed vector.

根据豪斯赫尔德正交变换具有不改变被变换向量长度的特性，采用优化的方法来求得法方程的解析解，得到摄像机的投影矩阵，以提高标定精度。

One of the restricting factors is the obtainment of projection matrix.

其中一个制约因素就是投影矩阵的获取。

You can think of the projection matrix as defining the properties of the lens of your camera.

你可以认为投影矩阵定义了你的摄像机的镜头属性。

Camera provides several methods for specifying the projection matrix, which should look familiar to most OpenGL programmers.

Camera提供了好几种可以设置投影矩阵的方法，熟悉OpenGL的程序员应该非常的熟悉。

The computation of projection matrix is mostly considered for the choice of basis functions.

而对于各种连续可导的基函数，其重建精度大致相当，基函数的选取应重点考虑其投影矩阵计算的难易程度。

Then we chose a specific position,the extrinsic parameters and the projection matrix attached to the position were obtained.

在已知摄像头内参数的情况下，计算特定位置的平面模板的外参数，从而确定在这一特定位置摄像机的投影矩阵，确定此时图像坐标系与世界坐标系的对应关系。

Otherwise feel free to roll your own projection matrix e.t.c.

当然你也可以自行设置投影矩阵。

The code below sets the Camera object's projection matrix once outside the rendering loop.

以下代码将用在渲染循环之外来设定摄像机对象的投影矩阵。

Firstly, a signalized point is stuck on a moving object to be tested, a microphone array and two video cameras are arranged, and the video cameras are demarcated to obtain a projection matrix; sound pressure signals of a sound source in the moving object to be tested are obtained by the microphone in an array mode, the dynamic video of the moving object to be tested is obtained and disassembled into an image by the video cameras; the signalized point on the moving object to be tested is identified in the video image and the matched signalized point is treated with three-dimension reconstruction to obtain the spatial location of the moving object to be tested; the sound pressure signals are treated with beam forming treatment to obtain a sound field characteristic function scattergram of the moving object to be tested, the video image is treated with spatial coordinate superposition frame by frame and restored into a dynamic video image.

首先在被测运动物体粘贴标志点，布置传声器阵列和两台摄像机，对摄像机进行标定，得到投影矩阵；传声器阵列获取被测运动物体中声源的声压信号，摄像机获取被测运动物体的动态视频，将动态视频拆解成图像；在视频图像中识别出被测运动物体上的标志点，对匹配后的标志点进行三维重构，获取被测运动物体的空间位置；对声压信号进行波束成型处理，得到被测运动物体的声场特征函数分布图，将其视频图像进行逐帧空间坐标叠加，并还原成动态视频图像。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。