Fig. 8From: Combination of HBIM and UAV photogrammetry for modelling and documentation of forgotten heritage. Case study: Isabel II dam in Níjar (Almería, Spain)GCPs error used to carry out the adjustment of the photogrammetric block. Z error is represented by ellipse colour. X, Y errors are represented by ellipse shape. Estimated GCP locations are marked with a dot. X—Easting, Y—Northing, Z—AltitudeBack to article page