In recent years, the APPs built into the remote controllers of mainstream drone equipment are equipped with the function of route planning, which can be used to collect the visible light and thermal image data of the solar system in a fast and safe way. In addition to the distance or altitude of the drone from the solar modules, the overlap rate between the heading and the side direction is also an important parameter in the route planning; the overlap rate in the APP is generally calculated based on the takeoff altitude; if the drone takes off from the ground to inspect the solar system above the building, the overlap rate of the collected photos will decrease (as shown in Fig. 1), and then it is necessary to increase the overlap rate setting on the remote control to avoid missing part of the module data, which will result in difficulties in the analysis in the following process. This is to avoid missing part of the module data, which may cause difficulties in subsequent analysis.