Architectural Photogrammetry Applied to the Cataloging of Historical Heritage. A Case Study of a Bunker in La Línea De La Concepción, Spain

Photogrammetry is an emerging tool in architecture, conservation, cataloging, and maintenance of heritage, offering a precise and efficient methodology for generating three-dimensional digital models. This work presents a comparative study of photogrammetric methods, focused on a lowcost software application, with the aim of evaluating its effectiveness in capturing and faithfully representing architectural and cultural elements, such as the bunkers located in La Línea de la Concepción (Spain), where the seismic hazard is not neglectable. The results reveal that the method choice depends on the object being digitized. Some programs are more suitable for capturing fine details, while others excel in reconstructing more complex structures.