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3D Archiving of Historic Architectural Structures for Conservation and Redevelopment: a Case Study of the H. Łopaciński Provincial Public Library Building in Lublin
The renovation and revitalisation of historic buildings supervised by heritage conservation authorities pose significant challenges for both owners and designers. Traditional documentation methods, including sketches as well as conceptual and technical drawings, are time‐consuming and, when multiple design variants are required, become prohibitively expen‐ sive. Modern reverse‐engineering techniques can substantially facilitate and accelerate these processes. This article presents a procedure for creating digital documentation of a historic building using a three‐dimensional point cloud generated through Terrestrial Laser Scanning (TLS). Mea‐ surements were carried out for the façade of the municipal library, located in a structure built between 1935 and 1939 that connects two wings of an eighteenth‐century Piarist monastery, as well as for the entrance hall and a room containing traditional drawer‐based catalogues. Due to the complex geometry of the façade, including arched arcades, the digitisation process required several dozen scans of both the exterior and interior, which were subsequently merged into a unified point‐cloud model. The recording of surface colour information enabled the detailed reproduction of the nearly 100‐year‐old floor in the hall, whose pattern is intended for reuse in the upcoming revitalisation project. Exporting the data in the universal .e57 format ensured rapid integration with specialised design software. The achieved spatial accuracy – on the order of millimetres with respect to the physical structure – and the ability to extract all required measurements directly from the 3D digital model give this approach a clear advantage over traditional documentation techniques based on isolated geometric measurements. Moreover, the generated mesh model of the room containing the traditional library catalogues offers additional.
