VC++ 8.0写的实现了摄影测量里面的前方交会、后方交会，并且根据后方+前方交会计算的结果得到三维空间坐标点，在MFC环境下完成三维点的OpenGL绘制。,VC++ 8.0 Writing the realization of the Photogrammetry inside forward intersection, resection, and in accordance with the rear+ forward intersection calculation results ar

计算单应矩阵，输入为2D图像坐标点和3D世界坐标点，输出为3x3单应矩阵-Calculate homography

输入灰度图片的中心坐标点，和要计算的半径。计算出圆心坐标所有圆环的半径上圆的灰度均值，返回一个矩阵-input the circle center, and the rad output the circle ring gray

通过坐标计算图幅编号。输入坐标点的X、Y值，计算坐标点所在图幅的图幅编号。-Calculation Sheet Numbers by coordinates. Enter the coordinates of the points X, Y value to calculate the coordinates of the point where the map sheet Sheet Number.