Gold hawk amulet — Backscatter electron SEM

sketchfab

This small gold hawk amulet (E.9075) is barely 1cm wide and marks the ACE photogrammetry team's first foray into developing innovative Scanning Electron Microscopy (SEM) photogrammetry techniques (or more accurately, structure from motion as no photons were used here!). This model was created using methods outlined in Sargent et al and Spedding et al (in review – contact us for details, updated upon publication). This was our initial trial run and we had hoped to conduct another test and refine it further, but the COVID-19 crisis has meant it may be some time before we can access the labs and attempt another model. So while we believe it could be improved, it's still a nice little model and we thought you might appreciate the work in progress! This object is crafted from bright shiny gold, making photogrammetry impossible using conventional methods. Instead, this model was constructed using backscatter electron imaging. Imaging: Juliet Spedding Model building: Juliet Spedding, Charlotte Sargent, and Ardern Hulme-Beaman