Three-dimensional model construction method and system, computer and storage medium

The invention provides a three-dimensional model construction method and system, a computer and a storage medium, and the method comprises the steps: obtaining a plurality of shot pictures pointing to a target object or a target scene, and obtaining a plurality of plane pictures after preprocessing; extracting plane feature points of the plane photos so as to carry out spatial arrangement on the plurality of plane photos, and generating an initial model; performing simplification processing on the initial model to obtain an optimization model, performing expansion processing on the optimization model to form a UV map, and baking detail features of the optimization model to the UV map to form a baked map; performing drawing processing on the baking map to generate a drawn map; and generating a final three-dimensional model based on the optimization model and the drawing chartlet. According to the method, the initial model is reconstructed based on the spatial arrangement of the plane photos, the steps of origi