Digitalization of existing buildings and the creation of 3D BIM models for
them has become crucial for many tasks. Of particular importance are floor
plans, which contain information about building layouts and are vital for
processes such as construction, maintenance or refurbishing. However, this data
is not always available in digital form, especially for older buildings
constructed before CAD tools were widely available, or lacks semantic
information. The digitalization of such information usually requires manual
work of an expert that must reconstruct the layouts by hand, which is a
cumbersome and error-prone process. In this paper, we present a pipeline for
reconstruction of vectorized 3D models from scanned 2D plans, aiming at
increasing the efficiency of this process. The method presented achieves
state-of-the-art results in the public dataset CubiCasa5k, and shows good
generalization to different types of plans. Our vectorization approach is
particularly effective, outperforming previous methods.

本文介绍了一种从扫描的 2D 平面图重建矢量化 3D 模型的流程，以提高数字化过程的效率，该方法在公共数据集 CubiCasa5k 中实现了最先进的结果，并表现出较好的推广性，其矢量化方法特别有效，优于以前的方法。