Planetary surface DEM (Digital Elevation Model) generation method fusing photogrammetry and stereophotometry

The invention relates to the technical field of three-dimensional reconstruction, in particular to a planet surface DEM generation method fusing photogrammetry and stereophotometry, and the method comprises the steps: obtaining reconstruction preparation data including a remote sensing image data set, various parameter values corresponding to each remote sensing image in the remote sensing image data set, an illumination model, model parameters of the illumination model and the like; constructing a target area, and screening the remote sensing images in the remote sensing image data set according to the parameter value corresponding to each remote sensing image to obtain an optimal image data set and an initial low-resolution DTM of the target area; and for a single ground point in the target area, according to the optimal image data set of the target area, the initial low-resolution DTM, the illumination model and the model parameters of the illumination model, constructing a stereophotometry error equation,