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

the international archives of the photogrammetry, remote sensing and spatial information sciences/international archives of the photogrammetry, remote sensing and spatial information sciences

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