To analyse and document the best-preserved structures in the Puig Ciutat site in detail, several photogrammetric studies have been performed. This technique provides geometric, radiometric and semantic information about three-dimensional objects in reality, using different photographs taken from different points of view. The model generated, despite not having real measurements, does have relative measurements that can be converted to real measurements and even to geolocation points if backup markers on the ground are used. This technique produces a model of reality, first in the form of points and polygons and, subsequently, on a solid, textured surface. In this respect, photogrammetry not only provides volumes and 3D measurements, it also offers quality, accuracy and speed in the execution and obtention of large amounts of information.
Point clouds generated with the Agisoft Photoscan program
Here we see the angle and position of the photographs taken in one of the archaeological sectors excavated at Puig Ciutat
Low density point cloud
Points located in space obtained by triangulation based on overlapping images with different viewpoints
Point cloud with colour information
Colour taken from the photographs and applied to the points in space
Layered triangle mesh without texture
Triangle mesh generated by joining the points in the cloud.
3D mesh with texture
Texture generated from photographs taken in the field