BIM lofting method for special-shaped decorative panels

The invention discloses a BIM lofting method for special-shaped decorative panels, which relates to the field of building construction. The lofting method of the invention comprises a measuring step,a scanning step, a modeling step, a lofting step and a retesting step. The method specifically comprises: setting up a survey control network with several control points in the survey step; in the scanning step, a three-dimensional scanner is used to scan the main body of the building structure to obtain the three-dimensional data of the main body of the building structure; in the modeling step, the three-dimensional scanning data is arranged into point clouds and the BIM model of the building structure main body is established reversely, the BIM model and the measurement control network are subjected to data integration, and the BIM model is adjusted to the coordinates of the measurement control network. The lofting method of the invention utilizes the BIM to fit the three-dimensional model of the building struct