Three-dimensional reconstruction method integrating laser radar and oblique photography

The invention provides a laser radar and oblique photography fused three-dimensional reconstruction method, which comprises the following steps: S1, acquiring and preprocessing an oblique image and image data to obtain a first oblique image, the image data comprising POS data; s2, acquiring image control point coordinates and high-precision POS (Point Of Sale) data; s3, correcting the inclined image to obtain a second inclined image; s4, carrying out aerial triangulation on the second inclined image, and obtaining effective matching point pairs through improved SIFT (Scale Invariant Feature Transform); s5, performing joint adjustment and dense matching based on the effective matching point pairs to obtain dense point clouds; s6, laser point cloud is acquired and preprocessed; s7, unifying the coordinates of the laser point cloud and the dense point cloud, and obtaining a fusion point cloud by using an improved ICP (Inductively Coupled Plasma); and S8, constructing a triangulation network and mapping textures