Volume XL-5/W7
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-5/W7, 409-416, 2015
https://doi.org/10.5194/isprsarchives-XL-5-W7-409-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-5/W7, 409-416, 2015
https://doi.org/10.5194/isprsarchives-XL-5-W7-409-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

  13 Aug 2015

13 Aug 2015

Data processing workflows from low-cost digital survey to various applications: three case studies of Chinese historic architecture

Z. Sun1 and Y. K. Cao2,3 Z. Sun and Y. K. Cao
  • 1School of Architecture, Nanjing Tech University, Nanjing, China
  • 2Department of Architecture, Shanghai Jiao Tong University, Shanghai, China
  • 3International Research Centre for Architectural Heritage Conservation, Shanghai Jiao Tong University, Shanghai, China

Keywords: Survey, Data processing, Structure from Motion, UAV, total station, BIM

Abstract. The paper focuses on the versatility of data processing workflows ranging from BIM-based survey to structural analysis and reverse modeling. In China nowadays, a large number of historic architecture are in need of restoration, reinforcement and renovation. But the architects are not prepared for the conversion from the booming AEC industry to architectural preservation. As surveyors working with architects in such projects, we have to develop efficient low-cost digital survey workflow robust to various types of architecture, and to process the captured data for architects. Although laser scanning yields high accuracy in architectural heritage documentation and the workflow is quite straightforward, the cost and portability hinder it from being used in projects where budget and efficiency are of prime concern. We integrate Structure from Motion techniques with UAV and total station in data acquisition. The captured data is processed for various purposes illustrated with three case studies: the first one is as-built BIM for a historic building based on registered point clouds according to Ground Control Points; The second one concerns structural analysis for a damaged bridge using Finite Element Analysis software; The last one relates to parametric automated feature extraction from captured point clouds for reverse modeling and fabrication.