Research on three-dimensional reconstruction based on architectural drawings

Based on the architectural drawing and the basic thought of three-dimensional reconstruction, the paper analyzes how to read the DXF data files and to get the information of point coordinates and the entity coordinates useful for the model in the file. It mainly presents how to transform the two-dimensional coordinates into three-dimensional coordinates through coordinate transformation, and proposes the thought of building up the measurement links between each component. In the end it realizes the three-dimensional reconstruction of the structure according to the information of three-dimensional coordinates.