Iglesia de Tiahuanaco 3D Documentation
In August of 2006, high density laser scanning was undertaken at the Iglesia de Tiahuanaco, near La Paz, Bolivia, by Adam Barnes and Christopher Goodmaster, researchers at the Center for Advanced Spatial Technology of the University of Arkansas. This Colonial-period church was constructed by the early Spanish colonists of the area, using building stones scavenged from the nearby archaeological site of Tiwanaku.
The west-facing elevation of the church was documented via high-density laser scanning using an Optech ILRIS-3D system with a resolution of approximately 1cm. Positioning the laser scanner proved to be a challenge as the building is closely bounded on many sides by adjacent structures and, in the case of the western facade, by a gated courtyard. In total, seven individual scans were collected (yielding over 6 million survey points) of the west facade (see image below).
High-resolution laser scanning was conducted on interior features of the church using a Minolta VIVID 9i system, documenting surface characteristics for a small portion of a wooden altar as well as a small section of the church's silver pulpit, with a high degree of resolution (~0.2mm). The resulting model of the altar (below) was derived from over 5 million data points collected across the surface of this feature.
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