two-medium photogrammetry

For acclivitous photogrammetry, we work out the outside orientation parameter by deduction, namely the equation to calculate the gradient of a beam according to the same point respectively in two pictures and by the rectification of oblique photography.

对倾斜摄影，依据两张相片的同名点，推导出数码相机的外定向参数&光轴倾斜角度求算式，并完成倾斜投影纠正。

At present, the principle of two-line intersection is widely used in close shot photogrammetry, whose mathematical basic style is composed of collinear equation intersection method and projection matrix intersection method.

目前近景摄影测量学空间物点定位主要应用的是空间点线线交会原理，其数学基本形式有两种：共线方程交会法和投影矩阵交会法。

Recent years, it appears a new digital close-range photogrammetry system called Image Total Station System. There are two CCD cameras inside the image total station, which can realize real 'no-touch measurement'.

图像全站仪系统是近几年出现的一种新的数字近景摄影测量系统，在图像全站仪内部集成有广角和长焦两个CCD相机，它可以实现真正的无接触测量。