通过使用两张以上照片以及 至少六个控制点的物方坐标和像点坐标，来确定相片上其它任意点的物方坐标，常用于古建筑的复原-Through the use of two or more photographs and at least six control points coordinates and the object side as the point coordinates, to determine the photo on the other side were arbitrary point coordinates, are commonly used in the rehabilitation of old buildings