Techniques of 3D component database establishing and quality control for wooden building

Based on the architectural survey project of “the Chi Lin Nunnery Redevelopment” in Hong Kong, this paper attempts to investigate the techniques of building 3D digital document of large-scale timber structure and quality control during construction by computer-based 3D simulation for the whole project. There were several key issues including primary data acquisition, 3D modeling and display, pre-assembling the total building and quality examination, etc. In this paper, some useful experiments, such as the new applications of CCD digital cameras, image and graph processing software packages (CAD, Photoshop, Photomodeler, Vexcel, etc.) to the architectures are also presented. These methods introduced in this paper are suitable for image and graph integrated database building of complicated architectures, and useful for conveniently maintaining and reconstructing the ancient architectures.