三维扫描技术在国图古籍馆测绘中的应用

The application of 3D scanning technology in the surveying and mapping of the Ancient Books Library of the National Library

国家图书馆古籍馆是北京第一座大型近代图书馆的建筑遗存,近年来,这座近现代古建筑遗产面临着越来越多的修缮保护需求,为此需要首先对古籍馆开展全方位测绘工作,为古籍馆的保护及今后的维护提供科学的档案资料,为后续修缮工作的有序开展奠定良好的基础。本文从对古籍馆测绘工作的意义和工作内容入手,采用传统测绘和三维激光雷达扫描技术,根据古籍馆建筑内部结构复杂的独有特点,提出了一种由外向内施测方法和ATRP点云拼接技术,实现了内部结构复杂的大型近现代古建筑遗产三维数字化测绘任务,可以为同类型古建筑遗产测绘提供一定的参考。

The National Library of Ancient Books is the architectural relic of the first large-scale modern library in Beijing. In recent years, this modern and ancient architectural heritage is facing more and more needs for repair and protection, and it is necessary to carry out comprehensive surveying and mapping of the ancient book library. It could provide scientific archival materials for the protection and future maintenance of the ancient book library, and could lay a good foundation for the orderly development of the follow-up repair work. This paper started with the meaning and work content of the surveying and mapping work of the ancient book library, adopted traditional surveying and mapping and 3D LiDAR scanning technology. According to the unique characteristics of the complex internal structure of the ancient book library building, a method for surveying from outside to inside and ATRP point cloud were proposed. The splicing technology realized the task of 3D digital surveying and mapping of large-scale modern ancient architectural heritage with complex internal structure, which could provide a certain reference for the surveying and mapping of ancient architectural heritage of the same type.