Research and Implementation of a 3D Digital Surveying and Mapping Scheme for Building Facades

Lin Wang （ Nanjing Polytechnic Institute, Nanjing, Jiangsu 210048, China ）

Abstract

This paper focuses on the 3D digital surveying and mapping scheme for building facades. It analyzes the principles, advantages, and limitations of key technologies, including laser scanning, photogrammetry, and 3D modeling, and elaborates on the necessity of technology integration and appropriate hardware–software selection. The study introduces methods for multi-source data collaborative acquisition and preprocessing, 3D model reconstruction and optimization, as well as BIM-based integration and application of results. Through multi-source data collaboration and technological integration, high-precision surveying and mapping of building facades can be achieved. The results can be applied to various scenarios such as building operation and maintenance, renovation, and refurbishment, thereby expanding the application value of 3D surveying and mapping outcomes.

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