There are several methods to measure the three-dimensional coordinates of ground points by photogrammetry.

There are three main methods: 1 space inverse intersection method 2 relative orientation-absolute orientation method 3 light speed method to analyze the specific process of photogrammetry, you can refer to the photogrammetry tutorial, and almost all the tutorials will talk about these three methods; If you answer questions, you can refer to the specific steps of each method.