govan hogbacks : Photogrammetry, Retopology, Textures

The term hogback first appeared in the 19th century and seemed to refer to the round shape of the top of the stone. Likely, hogbacks were created as gravestones for the upper classes from the 10th century onward. The stones are found in various locations in the UK.

I tried different data acquisition methods for creating photogrammetric models of the Hogback stones. Many photographs are taken during the photogrammetric recording of objects, which are then compiled into a three-dimensional point cloud. In the best case, each point of an object is recognised in at least three photographs and can thus be determined in its position in a three-dimensional coordinate system. To ensure this, the photographs must overlap considerably. To keep the data size as small as possible, I retopologised the 3D models and reduced their polycount.

The hogback models have been integrated into a VR experience in which visitors to Govan Old Parish Church can interact with the stones and learn about their history.

Hogback Model

Hogback Mesh

Retopology

VR Experience

Transferred Texture from Mesh

Normal Map from Mesh