3D stereophotogrammetry: post-processing and surface integration

Three-dimensional surface imaging has the potential to add value to the visualisation of externaland internal human anatomy. Stereophotogrammetry surfaces were acquired from multipleviewpoints and integrated to form a digital model. Artefacts due to line-of-sight, surface colourand reflectance were found to result in holes and geometric distortion. Surface artefacts werecorrected using CAD techniques and validated. Errors between 0?2 and 2?0 mm occurred inrepaired surfaces, while geometric distortion ranged from 1?9 to 7?4 mm during surfaceregistration. Post-processing and surface integration techniques may expand the capability ofmulti-headed stereophotogrammetry systems to assess a wide range of medical conditions.