The invention relates to the technical field of three-
dimensional modeling, and discloses an oblique photography and
laser point cloud multi-source aerial
triangulation fused live-action three-
dimensional modeling method, which comprises the following steps: step S101, constructing a local elevation field and calculating a slope direction; step S102, extracting a vertex
cracking chain; step S103, fitting a drift driving function; step S104, updating the
pose and geometric coordinates of the camera; step S105, re-parameterizing the local texture parameter coordinates; and step S106, outputting the live-action three-dimensional model. The method adapts to
canyon height difference and corridor weak geometric scenes, and the complementary advantages of oblique photography images and
laser point clouds are coordinated through the coherent process of multi-
source data space-time unification, structural
feature extraction, geometric observation fitting, joint optimization and topological repair; and staggered
layers in the slope direction caused by cross-
modal drift are inhibited in a targeted manner, and grid topology cracks and vertex
cracking are eliminated, so that the suitability of
texture mapping and a geometric structure is improved.