Cultural Heritage documentation. Method based on the fusion of optical scanning triangulation and photogrammetric techniques

Abstract

The continuing progress over the last years on three-dimensional surveying equipments -software and hardware- has increased the range of possibilities for the recording, documentation and dissemination of heritage. However, and based on this following hypotheses, there are yet several obstacles in the creation of photorealistic and reliable 3D models among some geometric and radiometric fields. These problems arise when the pieces offer difficulties for scanning such as the lack of defined edges in the geometry of the object in question and/or the impossibility of recording due to the type of finish (color, uniformity, reflectance...) This study suggests and presents results of a photorealistic model applied to the survey of the work of the sculptor Jorge Oteiza, whose pieces are characterized by geometries and textures against an ideal scanning. The solution contemplated here involves a methodology based on a combination of techniques: models captured by optical triangulation scanner Artec supported by the photogrammetric software PhotoScan in the texturing phase.

Keywords

• escaneo de luz estructurada
• fotogrametría multi-imagen
• levantamiento escultórico
• documentación gráfica 3d
• mapeo de texturas