FOCUS STACKING
Aurore Mathys, Jonathan Brecko · Amsterdam University Press eBooks · 2018
The COSCH Case Study that has employed this technology: Roman coins (fig.15.1) DefinitionFocus stacking is a technique which extends the depth of focus of an image by combining different images with low depth of field.It is mostly used in closeup and macrophotography since in those cases the lens, even at high f-stop, is not able to render everything in focus.This method, although not used often in cultural heritage, is useful to document objects and to illustrate details.It can also be used in combination with Structure from Motion (SfM) in order to create accurate 3D models of small artefacts.