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      SFM TECHNIQUE AND FOCUS STACKING FOR DIGITAL DOCUMENTATION OF ARCHAEOLOGICAL ARTIFACTS

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          Abstract

          Digital documentation and high-quality 3D representation are always more requested in many disciplines and areas due to the large amount of technologies and data available for fast, detailed and quick documentation. This work aims to investigate the area of medium and small sized artefacts and presents a fast and low cost acquisition system that guarantees the creation of 3D models with an high level of detail, making the digitalization of cultural heritage a simply and fast procedure. The 3D models of the artefacts are created with the photogrammetric technique Structure From Motion that makes it possible to obtain, in addition to three-dimensional models, high-definition images for a deepened study and understanding of the artefacts. For the survey of small objects (only few centimetres) it is used a macro lens and the focus stacking, a photographic technique that consists in capturing a stack of images at different focus planes for each camera pose so that is possible to obtain a final image with a higher depth of field. The acquisition with focus stacking technique has been finally validated with an acquisition with laser triangulation scanner Minolta that demonstrates the validity compatible with the allowable error in relation to the expected precision.

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          Author and article information

          Journal
          ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
          Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.
          Copernicus GmbH
          2194-9034
          2016
          June 15 2016
          : XLI-B5
          : 229-236
          Article
          10.5194/isprs-archives-XLI-B5-229-2016
          268a4fe8-88d5-4d4d-9cf4-73831c5039cf
          © 2016
          History

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