Multi-Camera Workflow Applied to a Cultural Heritage Building: Alhambra’s Torre de la Cautiva from the Inside

Heritage

Esteban M. Stepanian¹  Rubén Cantos¹  Anto J. Benítez¹  Manuel Armenteros¹  Xose Prieto Souto¹  Ángela Gómez Manzanares²  Miguel García-Villaraco³  Jaime Solano⁴ 

[1]Department of Communication, Universidad Carlos III of Madrid, 28903 Madrid, Spain

[2]Department of Optics, University Complutense of Madrid, 28040 Madrid, Spain

[3]Miopía FX, 28006 Madrid, Spain

[4]Tecmerin Research Group, Universidad Carlos III of Madrid, 28903 Madrid, Spain

关键词: cultural heritage;    photogrammetry;    workflow;    Alhambra’s Tower of the Captive;   

DOI  :  10.3390/heritage5010002

来源: DOAJ

【 摘 要 】

It is increasingly necessary to generate accessible and navigable digital representations of historical or heritage buildings. This article explains the workflow that was applied to create such a digital component for one of the least accessible areas of the Alhambra palace in Granada, the so-called Torre de la Cautiva (Tower of the Captive). The main goal of this process was to create affordable, photorealistic 3D models that contribute to the dissemination of cultural heritage, the decision making for its conservation and restoration, and public engagement and entertainment. With enough preparation, the time spent gathering data following a Structure from Motion (SfM) approach can be significantly reduced by using a multi-camera (low cost DSLR) photogrammetric strategy. Without the possibility of artificial lighting, it was essential to use RAW images and calibrate the color in the scene for material and texture characterization. Through processing, the amount of data was reduced by optimizing the model’s topology. Thus, a photorealistic result was obtained that could be managed and visualized in immersive Visual Reality (VR) environments, simulating different historical periods and environmental and lighting conditions. The potential of this method allows, with slight modifications, the creation of HBIMs and the adaptation to VR systems development, whose current visualization quality is below the resolution of actionable models in rendering engines.

【 授权许可】

Unknown