Small celestial body multi-view three-dimensional reconstruction method and system based on weak illumination self-adaption

The invention discloses a small celestial body multi-view three-dimensional reconstruction method and system based on weak illumination self-adaption, and the method comprises the steps: carrying out the preprocessing of a weak illumination source image and a reference image of a small celestial body, and inputting the preprocessed image into a reconstruction network, so as to obtain a depth image; and performing post-processing operation on the depth map to generate a three-dimensional reconstruction model. The network reconstruction comprises a feature extraction stage, a cost body aggregation stage, a cost body regularization stage, a depth map estimation stage and a depth map optimization stage. Inputting the preprocessed image and the reference image into a network, and extracting and fusing features of different levels through a pyramid structure and an adaptive feature extraction module to obtain a feature map; a feature body is obtained through homography transformation, and a cost body is obtained th